1. The utility model provides a compound cavity structural slab of bamboo base, constitutes space bamboo muscle skeleton by upper and lower panel and floor to pour outsourcing gelled material, form cavity structural slab, and:

the upper panel and the lower panel are formed by assembling longitudinal bamboo ribs, the butt joint positions of the longitudinal bamboo ribs are spaced at a certain distance, epoxy resin is poured to form epoxy resin sleeve type joints at the butt joint positions, and two ends of each epoxy resin sleeve type joint completely wrap the longitudinal bamboo ribs on two sides for a certain length;

the rib plates are formed by assembling vertical short bamboo ribs, rib plate inner bamboo ribs extend out of the rib plates, and the rib plate inner bamboo ribs are connected with the upper panel and the lower panel in a cementing mode.

2. The bamboo-based composite cavity structural panel according to claim 1,

the longitudinal bamboo rib single-layer set blank is free of transverse bamboo ribs, an epoxy resin thin-layer bonding layer is formed at the butt joint position of the longitudinal bamboo ribs on the two sides, and the thickness of the epoxy resin thin-layer bonding layer is 3-5 mm;

preferably, the epoxy sleeve joint is a rectangular hollow epoxy cylinder with a wall thickness of 2-3mm and a length of 2-5cm on each side.

3. The bamboo-based composite cavity structural panel according to claim 1,

the longitudinal bamboo rib single layer group blank is provided with a transverse bamboo rib, the transverse bamboo rib penetrates through the butt joint part between the longitudinal bamboo ribs on the two sides and is spaced from the longitudinal bamboo ribs on the two sides by a certain distance, an epoxy resin thin layer bonding layer is formed between the transverse bamboo rib and the longitudinal bamboo ribs on the two sides, and the thickness of the epoxy resin thin layer bonding layer is 3-5 mm;

preferably, the epoxy resin sleeve joint is an octagonal hollow epoxy resin cylinder, the wall thickness is 2-3mm, the length of each side of the bamboo reinforcement along the transverse direction is 1-2cm, and the length of the bamboo reinforcement along the longitudinal direction of each side is 2-5 cm.

4. The bamboo-based composite cavity structural panel according to claim 1,

the longitudinal bamboo rib single layer set blank is free of transverse bamboo ribs and is provided with a transverse epoxy resin belt, and the transverse epoxy resin belt is arranged at the butt joint of the longitudinal bamboo ribs on the two sides in a penetrating and pouring manner and is tightly attached to the longitudinal bamboo ribs on the two sides;

preferably, the epoxy resin telescopic joint is an octagonal cavity epoxy resin cylinder, the wall thickness is 2-3mm, the length of each side of the transverse epoxy resin belt is 1-2cm, and the length of each side of the longitudinal bamboo rib is 2-5 cm.

5. The bamboo-based composite cavity structural panel according to claim 4,

the longitudinal bamboo ribs can be subjected to staggered joint assembly, or not, and the transverse epoxy resin belt is arranged in a through length mode.

6. The bamboo-based composite cavity structural panel according to any one of claims 1 to 5,

the longitudinal bamboo rib double-layer bidirectional assembly blank has the advantages that the upper and lower layers of longitudinal bamboo rib connecting nodes are the same as those of the single-layer assembly blank, and the upper and lower layers of bamboo ribs are bonded by filling a cementing material or are integrally wrapped by a cementing material.

7. The bamboo-based composite cavity structural panel according to claim 1,

the upper and lower panel is provided with panel banding bamboo muscle, has the clearance between the two panels banding bamboo muscle, the both ends of bamboo muscle insert in the floor in the clearance between the two panels banding bamboo muscle on the upper and lower panel to adopt epoxy to bond in the clearance between bamboo muscle and the two panels banding bamboo muscle in the floor.

8. The bamboo-based composite cavity structural panel according to claim 1,

the upper and lower face plates are provided with face plate grooves at corresponding intervals inwards, a certain amount of epoxy resin is poured into the face plate grooves in advance, and two ends of the bamboo ribs in the rib plates are inserted into the face plate grooves on the upper and lower face plates and bonded through the epoxy resin.

9. An integrated pouring construction process of a bamboo-based composite cavity structural slab comprises the following steps:

firstly, assembling a panel bamboo rib blank, wherein the panel bamboo rib adopts pouring epoxy resin to form epoxy resin sleeve type joints for connection, so as to form a panel bamboo rib truss;

step two, combining blanks by using the rib plate bamboo ribs to form a rib plate bamboo rib truss, wherein the rib plate bamboo ribs extend out of the rib plate bamboo ribs at certain intervals;

positioning the panel bamboo rib trusses, and positioning the two panel bamboo rib trusses according to the positions of the upper panel and the lower panel;

positioning the bamboo rib trusses of the rib plates, inserting bamboo ribs in the rib plates between the edge-sealed bamboo ribs of the two panels, and bonding the bamboo ribs with epoxy resin;

and fifthly, forming a space bamboo reinforcement framework, erecting a mold, pouring a cementing material, and maintaining to obtain the cavity structural slab.

10. A slot-in type bonding construction process of a bamboo-based composite cavity structural slab comprises the following steps:

firstly, assembling a panel bamboo rib blank, wherein the panel bamboo rib adopts pouring epoxy resin to form epoxy resin sleeve type joints for connection, so as to form a panel bamboo rib truss;

step two, pouring a cementing material, arranging a panel groove at the joint of the cementing material and the rib plate, and maintaining to obtain an upper panel and a lower panel;

step three, combining blanks with the rib plate bamboo ribs to form a rib plate bamboo rib truss, wherein rib plate bamboo ribs extend out of the rib plate bamboo ribs at certain intervals, and the rib plate bamboo ribs correspond to the positions of the grooves of the panel;

pouring a cementing material, and maintaining to obtain a rib plate;

placing the lower panel on the platform, and pouring epoxy resin into the panel groove;

step six, coating a thin resin layer with the thickness of less than 1mm on the joint of the lower panel and the rib plate, inserting one end of a bamboo rib in the rib plate into the groove of the panel and pressing the bamboo rib tightly, and firmly adhering the bamboo rib and the thin resin layer by virtue of epoxy resin;

placing the upper panel on the platform, enabling the groove of the panel to face upwards, and pouring epoxy resin into the groove of the panel;

step eight, coating a thin resin layer with the thickness of less than 1mm on the joint of the upper panel and the rib plate;

and step nine, turning the lower panel and the ribbed plate obtained in the previous step, inserting the other end of the bamboo rib in the ribbed plate into the panel groove of the upper panel and pressing, and firmly bonding the bamboo rib and the thin resin layer by virtue of epoxy resin, so that the manufacture of the cavity structural plate is completed.

Background

The existing bamboo-based composite board design scheme comprises the following steps:

the recombinant bamboo scheme comprises the following steps: the bamboo material is re-organized and reinforced to form new bamboo material, and is produced through processing bamboo into long bamboo strips, bamboo filaments or crushing into bamboo filament bundles, drying, soaking in glue, drying to required water content, spreading in mold, high temperature and high pressure heat curing.

The bamboo winding scheme is as follows: the bamboo winding urban comprehensive pipe gallery is a product made by China with core intellectual property rights, is different from pipe galleries such as steel pipes, concrete and the like which are commonly adopted by all countries in the world, and is a novel pipe gallery which is made by taking bamboo as a main raw material, adopting thermosetting resin as an adhesive and adopting a winding process. Compare in the material performance with the concrete pipe gallery with bamboo winding city utility tunnel, its compressive strength is equal with C30 concrete pipe gallery intensity to satisfy city utility tunnel engineering specification requirement. Under the same buried depth and compression conditions, the bamboo-wound urban comprehensive pipe gallery has better shock resistance, anti-settling capacity, heat preservation and anti-freezing performance, corrosion resistance and the like than those of a concrete pipe gallery. In addition, the urban comprehensive pipe gallery wound by bamboo has the outstanding advantages of light weight, convenience in construction and installation, long service life, fire prevention, heat preservation, leakage resistance, corrosion resistance, geological settlement resistance, convenience in transportation, renewable resources, low carbon, environmental friendliness and the like. Test analysis results show that under the condition of burying 1 meter deep and carrying 90 tons on the ground, the maximum vertical deformation of the urban comprehensive pipe gallery wound by the bamboos is less than 1 percent and is far lower than the control standard of 3 percent, and the service life can reach more than 100 years.

The prior art has the following defects:

the recombinant bamboo scheme comprises the following steps: high glue content, complex process, high cost and poor durability. When the recombined bamboo is used for a structural member, the bearing capacity of the recombined bamboo is high, but due to the stability problem, the member cannot be too thin and too small, so that the member is large, the bearing capacity is difficult to exert, great waste is caused, and the structural cost is far higher than that of a conventional building. For example, the recombined bamboo is adopted to be made into a hollow floor slab, the upper panel can meet the bearing capacity requirement only by 1mm, but obviously, the stability, rigidity and comfort level of the recombined bamboo cannot meet the application requirement, the thickness of the recombined bamboo must not be increased at the moment, the recombined bamboo is generally required to be at least 10mm thick, the bearing capacity is far beyond the use requirement, and the manufacturing cost is greatly increased.

The bamboo winding scheme is as follows: the industrial and civil building wallboard has great influence on the construction period, the manufacturing cost, the comfort level and the quality of the house. The bamboo wrapping technique is suitable for making pipes, but is difficult to apply to building wall panels of relatively thin thickness. And the cost is higher, the process is more complicated, the field connection construction is more difficult, and the wallboard has no comprehensive advantages compared with the traditional wallboard. Especially for non-bearing walls, the building consumption is large, the cost of the traditional wallboard is low, and the wallboard is not suitable for popularization of the bamboo winding technology.

In the prior art, only the structure and the mode of assembling the bamboo rib blank are concerned, the problem of the joint connection strength of joints between the bamboo ribs is not fully considered, and the problem of the connection performance of the joints of the composite board structure is not considered, so that the possibility of the occurrence of bamboo rib disjointing, board damage and composite board collapse exists.

Disclosure of Invention

In order to solve the problems, the invention provides a bamboo-based composite cavity structural slab and a construction process thereof, which are mainly used for wallboards and floor slabs and are used for solving one or more problems in the prior art.

The invention is realized by the following steps:

the invention firstly provides a bamboo-based composite cavity structural slab, which comprises an upper panel, a lower panel and a rib plate to form a space bamboo reinforcement framework, and is poured with an outer packing cementing material to form the cavity structural slab, and the following steps:

the upper panel and the lower panel are formed by assembling longitudinal bamboo ribs, the butt joint positions of the longitudinal bamboo ribs are spaced at a certain distance, epoxy resin is poured to form epoxy resin sleeve type joints at the butt joint positions, and two ends of each epoxy resin sleeve type joint completely wrap the longitudinal bamboo ribs on two sides for a certain length;

the rib plates are formed by assembling vertical short bamboo ribs, rib plate inner bamboo ribs extend out of the rib plates, and the rib plate inner bamboo ribs are connected with the upper panel and the lower panel in a cementing mode.

Preferably, the longitudinal bamboo rib single layer group blank is free of transverse bamboo ribs, an epoxy resin thin layer bonding layer is formed at the butt joint position of the longitudinal bamboo ribs on the two sides, and the thickness of the epoxy resin thin layer bonding layer is 3-5 mm; the transverse bamboo ribs are not arranged, the longitudinal bamboo ribs are assembled into blanks in a one-way mode, the process is simple, and the construction is fast; the bonding connection with certain strength is further formed on the longitudinal bamboo ribs on the two sides from the end surfaces of the bamboo ribs through the epoxy resin thin-layer bonding layer between the end surfaces of the longitudinal bamboo ribs on the two sides, and the joint connection strength is improved.

Preferably, the epoxy sleeve joint is a rectangular hollow epoxy cylinder with a wall thickness of 2-3mm and a length of 2-5cm on each side.

Preferably, the longitudinal bamboo rib single layer group blank is provided with a transverse bamboo rib, the transverse bamboo rib penetrates through the butt joint part between the longitudinal bamboo ribs on the two sides and is spaced from the longitudinal bamboo ribs on the two sides by a certain distance, an epoxy resin thin layer bonding layer is formed between the transverse bamboo rib and the longitudinal bamboo ribs on the two sides, and the thickness of the epoxy resin thin layer bonding layer is 3-5 mm; the transverse bamboo ribs and the longitudinal bamboo ribs form the bamboo rib truss together, so that the board has bidirectional bearing strength, and meanwhile, the connection strength of the joints is considered.

Preferably, the epoxy resin sleeve joint is an octagonal hollow epoxy resin cylinder, the wall thickness is 2-3mm, the length of each side of the bamboo reinforcement along the transverse direction is 1-2cm, and the length of the bamboo reinforcement along the longitudinal direction of each side is 2-5 cm. The epoxy resin sleeve joint with the octagonal cross section can provide firm bonding strength for bamboo ribs in two directions, and meanwhile, the longitudinal length is taken as the main part, and the transverse length is taken as the auxiliary part.

Preferably, the longitudinal bamboo rib single layer set blank is provided with no transverse bamboo rib and a transverse epoxy resin belt, and the transverse epoxy resin belt is arranged at the butt joint of the longitudinal bamboo ribs on the two sides in a penetrating manner and is tightly attached to the longitudinal bamboo ribs on the two sides; the horizontal epoxy resin belt replaces the horizontal bamboo ribs, the horizontal epoxy resin belt is tightly attached to the vertical bamboo ribs on the two sides, on one hand, the effect of a bonding joint can be achieved, the horizontal epoxy resin belt is used for butting the vertical bamboo ribs on the two sides at one time, the horizontal epoxy resin belt has the effect similar to a horizontal rib truss of the horizontal bamboo ribs, and the horizontal epoxy resin belt and the vertical bamboo ribs form the bamboo rib truss together, so that the plate has bidirectional bearing strength.

Preferably, the epoxy resin telescopic joint is an octagonal cavity epoxy resin cylinder, the wall thickness is 2-3mm, the length of each side of the transverse epoxy resin belt is 1-2cm, and the length of each side of the longitudinal bamboo rib is 2-5 cm.

Preferably, the longitudinal bamboo ribs can be subjected to staggered joint to form blanks, or the blanks can not be subjected to staggered joint to form blanks, and the transverse epoxy resin belt is arranged in a through-length mode.

Preferably, the longitudinal bamboo rib double-layer bidirectional assembly blank has the same upper and lower layer longitudinal bamboo rib connecting nodes as the single-layer assembly blank, and the upper and lower layer bamboo ribs are bonded by filling a cementing material or are wholly wrapped by a cementing material.

Preferably, upper and lower panel is provided with panel banding bamboo muscle, has the clearance between the two panels banding bamboo muscle, the both ends of bamboo muscle insert in the floor in the clearance between the two panels banding bamboo muscle on the upper and lower panel to adopt epoxy to bond in the clearance between bamboo muscle in the floor and the two panels banding bamboo muscle. The bamboo ribs are sealed by the panels of the upper panel and the lower panel, the rib plates are firmly fixed with the upper panel and the lower panel, additional structures do not need to be added, the outer packing cementing materials are integrally poured after positioning, the process is simple, and the construction is convenient.

Preferably, the upper and lower panels are provided with panel grooves at corresponding intervals inwards, a certain amount of epoxy resin is pre-poured into the panel grooves, and the two ends of the bamboo reinforcement in the rib plate are inserted into the panel grooves on the upper and lower panels and bonded through the epoxy resin. Through reserve the recess when panel about pouring, insert the recess with the floor, temporary location and fixed measure when the recess can regard as the construction floor on the one hand, and on the other hand floor both ends are sealed in the recess, bond through epoxy, and joint strength and wholeness are better.

The invention relates to an integrated pouring construction process of a bamboo-based composite cavity structural slab, which comprises the following steps:

firstly, assembling a panel bamboo rib blank, wherein the panel bamboo rib adopts pouring epoxy resin to form epoxy resin sleeve type joints for connection, so as to form a panel bamboo rib truss;

step two, combining blanks by using the rib plate bamboo ribs to form a rib plate bamboo rib truss, wherein the rib plate bamboo ribs extend out of the rib plate bamboo ribs at certain intervals;

positioning the panel bamboo rib trusses, and positioning the two panel bamboo rib trusses according to the positions of the upper panel and the lower panel;

positioning the bamboo rib trusses of the rib plates, inserting bamboo ribs in the rib plates between the edge-sealed bamboo ribs of the two panels, and bonding the bamboo ribs with epoxy resin;

and fifthly, forming a space bamboo reinforcement framework, erecting a mold, pouring a cementing material, and maintaining to obtain the cavity structural slab.

The invention discloses another slot-in type bonding construction process of a bamboo-based composite cavity structural slab, which comprises the following steps:

firstly, assembling a panel bamboo rib blank, wherein the panel bamboo rib adopts pouring epoxy resin to form epoxy resin sleeve type joints for connection, so as to form a panel bamboo rib truss;

step two, pouring a cementing material, arranging a panel groove at the joint of the cementing material and the rib plate, and maintaining to obtain an upper panel and a lower panel;

step three, combining blanks with the rib plate bamboo ribs to form a rib plate bamboo rib truss, wherein rib plate bamboo ribs extend out of the rib plate bamboo ribs at certain intervals, and the rib plate bamboo ribs correspond to the positions of the grooves of the panel;

pouring a cementing material, and maintaining to obtain a rib plate;

placing the lower panel on the platform, and pouring epoxy resin into the panel groove;

step six, coating a thin resin layer with the thickness of less than 1mm on the joint of the lower panel and the rib plate, inserting one end of a bamboo rib in the rib plate into the groove of the panel and pressing the bamboo rib tightly, and firmly adhering the bamboo rib and the thin resin layer by virtue of epoxy resin;

placing the upper panel on the platform, enabling the groove of the panel to face upwards, and pouring epoxy resin into the groove of the panel;

step eight, coating a thin resin layer with the thickness of less than 1mm on the joint of the upper panel and the rib plate;

and step nine, turning the lower panel and the ribbed plate obtained in the previous step, inserting the other end of the bamboo rib in the ribbed plate into the panel groove of the upper panel and pressing, and firmly bonding the bamboo rib and the thin resin layer by virtue of epoxy resin, so that the manufacture of the cavity structural plate is completed.

Compared with the prior art, the bamboo-based composite cavity structural slab and the construction process provided by the invention have the following advantages:

1. the joint strength between the bamboo muscle is high in the panel, and the structure bears the weight of dynamic height, stability good:

the longitudinal bamboo ribs on the two sides of the epoxy resin sleeve joint form omnibearing bonding connection from the outer surfaces and the end surfaces of the bamboo ribs;

the transverse trusses in the panel are flexibly arranged, transverse bamboo ribs can be omitted, transverse bamboo ribs or transverse epoxy resin belts can be adopted, and high connection strength and bearing strength can be obtained in the longitudinal direction and the transverse direction;

the epoxy resin sleeve joint has reasonable form and reasonable parameters, and gives consideration to the bonding strength in two directions at the joint and the overall thickness requirement of the plate.

2. The joint strength between each part is high in the cavity structure board, and the structure bears the weight of dynamic height, stability good:

the upper panel, the lower panel and the rib plate can be bonded by virtue of the bamboo ribs with the edges sealed by the panels, and the outer packing cementing material is integrally poured, so that the rib plate is firmly fixed with the upper panel and the lower panel, the process is simple, and the construction is convenient; the upper panel and the lower panel can be formed by pouring firstly, then the slot type connecting rib plate is adopted, the groove is used as a temporary positioning and fixing measure when the rib plate is constructed, and meanwhile, better connecting strength and integrity can be obtained.

3. The bamboo-based composite cavity structural slab is used as a building wallboard and a floor slab, and has the advantages of light weight, high bearing capacity, good heat insulation performance, good fireproof performance, good moisture resistance and durability, good crack resistance, no maintenance in the later period and the like. By using the large-scale plate, the defects of multiple abutted seams and easy cracking of the common plate can be overcome.

4. The bamboo-based composite cavity structure wallboard and floor board has less field wet operation and is green and environment-friendly; the component has light weight, regular size, high transportation efficiency, convenient on-site hoisting construction and saves construction period and construction cost.

5. The bamboo reinforcement is wrapped with epoxy resin and cementing material, so that the durability of the bamboo reinforcement is greatly improved. The outer package of the cementing material also solves the fire-proof problem of bamboo and wood.

6. The bamboo reinforcement and the cementing material are matched with each other, so that the bearing capacity of the bamboo reinforcement can be fully exerted, and the problems of overall height, comfort degree and the like are improved through the cementing material.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It should be apparent that the drawings in the following description are merely exemplary, and that other embodiments can be derived from the drawings provided by those of ordinary skill in the art without inventive effort.

The structures, ratios, sizes, and the like shown in the present specification are only used for matching with the contents disclosed in the specification, so that those skilled in the art can understand and read the present invention, and do not limit the conditions for implementing the present invention, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the sizes, without affecting the functions and purposes of the present invention, shall fall within the scope covered by the technical contents disclosed in the present invention.

FIG. 1 is a schematic plan view of an embodiment of a panel;

FIG. 2 is an enlarged partial schematic view of the faceplate of FIG. 1;

FIG. 3 is a cross-sectional view taken along line 1-1 of FIG. 2;

FIG. 4 is a cross-sectional view taken along line 1A-1A of FIG. 2;

FIG. 5 is a schematic plan view of another embodiment of a panel;

FIG. 6 is an enlarged partial schematic view of the faceplate of FIG. 5;

FIG. 7 is a cross-sectional view taken at 2-2 of FIG. 6;

FIG. 8 is a cross-sectional view taken along line 2A-2A of FIG. 6;

FIG. 9 is a schematic plan view of a further embodiment of a panel;

FIG. 10 is an enlarged partial schematic view of the faceplate of FIG. 9;

FIG. 11 is a cross-sectional view taken along line 3-3 of FIG. 10;

FIG. 12 is a cross-sectional view taken along line 3A-3A of FIG. 10;

FIG. 13 is a schematic view of a planar structure of a panel according to still another embodiment (blank set with staggered peaks);

FIG. 14 is a schematic diagram of one embodiment of a cavity structured plate;

FIG. 15 is a sectional view taken along line A-A of FIG. 14;

FIG. 16 is an enlarged view of region 1 of FIG. 15;

FIG. 17 is a cross-sectional view of another embodiment A-A of FIG. 14;

fig. 18 is an enlarged view of region 2 of fig. 17.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention more apparent, the embodiments of the present invention are described in further detail below with reference to the embodiments and the accompanying drawings. The exemplary embodiments and descriptions of the present invention are provided to explain the present invention, but not to limit the present invention.

In the description of the present invention, it is to be understood that the terms "comprises/comprising," "consists of … …," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a product, apparatus, process, or method that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such product, apparatus, process, or method if desired. Without further limitation, an element defined by the phrases "comprising/including … …," "consisting of … …," or "comprising" does not exclude the presence of other like elements in a product, device, process, or method that comprises the element.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

It will be further understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present invention and to simplify description, and do not indicate or imply that the referenced device, component, or structure must have a particular orientation, be constructed in a particular orientation, or be operated in a particular manner, and should not be construed as limiting the present invention.

The following describes the implementation of the present invention in detail with reference to preferred embodiments.

Referring to fig. 1, in order to manufacture the bamboo-based composite cavity structural slab, the invention firstly provides a bamboo rib slab which is formed by assembling longitudinal bamboo ribs 1, the longitudinal bamboo ribs 1 are connected end to end in the longitudinal direction, the butt joints are spaced at a certain distance, the butt joints are connected by epoxy resin casting to form epoxy resin sleeve type joints 2, and two ends of each epoxy resin sleeve type joint 2 completely wrap the longitudinal bamboo ribs 1 on two sides for a certain length; the epoxy resin sleeve type joint 2 is used for bonding within a certain length range of the longitudinal bamboo ribs 1, and bonding connection with certain strength is formed on the longitudinal bamboo ribs 1 on two sides from the outer surfaces of the bamboo ribs.

Regarding the blank assembling mode of the longitudinal bamboo ribs 1, the inventor has already disclosed in previous patents, the detailed description is not provided in the invention, the longitudinal bamboo ribs 1 are uniformly arranged at intervals, the cementing materials 3 are poured in the gaps, the upper surface and the lower surface of the blank assembling bamboo ribs are attached with the fiber gridding cloth, the fiber gridding cloth completely wraps the side surfaces and the end surfaces of the blank assembling bamboo ribs from the periphery, and the cementing materials are simultaneously poured on the upper surface, the lower surface and the peripheral side surfaces of the outer side of the fiber gridding cloth, so that the bamboo rib plate is formed, and the bamboo rib plate can be used as a panel in a subsequent structure and can also be used as a rib plate.

Referring to fig. 1-4, in one embodiment, the longitudinal bamboo reinforcement 1 of the present invention is a single-layer set of blanks without transverse bamboo reinforcement, a thin epoxy resin layer 21 is formed at the joint of the longitudinal bamboo reinforcement 1 on both sides, and the thin epoxy resin layer 21 has a thickness of 3-5 mm. The longitudinal bamboo ribs 1 on the two sides are further bonded and connected with each other with certain strength from the end faces of the bamboo ribs through the epoxy resin thin-layer bonding layers 21 between the end faces of the longitudinal bamboo ribs 1 on the two sides, and the epoxy resin sleeve type joint is used for bonding and connecting the longitudinal bamboo ribs on the two sides from the outer surfaces and the end faces of the bamboo ribs in an all-around mode.

Preferably, the epoxy slip 2 has a wall thickness of 2-3mm and a length of 2-5cm per side. Through calculation and verification, the size does not cause the thickness of the plate to be too prominent at the joint on the premise of providing necessary bonding strength, so that the overall thickness and the attractiveness of the plate are not affected.

The specific length of the epoxy resin sleeve joint 2 is calculated according to the stress, and the design requirements of strong nodes and weak components are met.

Referring to fig. 5-8, in another embodiment, the longitudinal bamboo rib 1 is a single-layer set of blanks, and has a transverse bamboo rib 4, the transverse bamboo rib 4 is inserted into the butt joint between the longitudinal bamboo ribs 1 at two sides and is spaced from the longitudinal bamboo ribs 1 at two sides by a certain distance, an epoxy resin thin-layer bonding layer 21 is formed between the transverse bamboo rib 4 and the longitudinal bamboo ribs 1 at two sides, and the thickness of the epoxy resin thin-layer bonding layer 21 is 3-5 mm.

Preferably, the epoxy resin sleeve joint 2 is an octagonal cavity epoxy resin cylinder, the wall thickness is 2-3mm, the length of each side of the transverse bamboo rib 4 is 1-2cm, namely the length of the transverse bamboo rib 4 is extended and wrapped from the outer edge of the longitudinal bamboo rib 1 to the two directions of the transverse bamboo rib 4, the length of each side of the longitudinal bamboo rib 1 is 2-5cm, namely the length of each side of the longitudinal bamboo rib 1 is extended and wrapped from the outer edge of the transverse bamboo rib 4 to the two directions of the longitudinal bamboo rib 1, and the length of each side of the longitudinal bamboo rib 1 is 2-5 cm. The dimension is calculated and verified to provide the necessary bonding strength in both the longitudinal and transverse directions of the bamboo reinforcement.

The specific size of the epoxy resin sleeve joint 2 is calculated according to the stress, and the design requirements of strong nodes and weak components are met.

Referring to fig. 9-12, in another embodiment, the longitudinal bamboo rib 1 is a single-layer set of blanks, has no transverse bamboo rib, and has a transverse epoxy resin band 5, the transverse epoxy resin band 5 corresponds to the transverse bamboo rib 4, and the transverse epoxy resin band 5 is disposed at the joint of the longitudinal bamboo ribs 1 at two sides in a penetrating manner, except that the transverse epoxy resin band 5 is not spaced apart from the longitudinal bamboo ribs 1 at two sides but is tightly attached to the longitudinal bamboo ribs 1 at two sides, the transverse epoxy resin band 5 can function as an adhesive joint on one hand, and the longitudinal bamboo ribs 1 at two sides are jointed together at one time by means of the transverse epoxy resin band 5, and the transverse epoxy resin band 5 has the effect similar to a transverse rib truss of the transverse bamboo rib at the same time, and forms a bamboo rib truss together with the longitudinal bamboo rib, so that the plate has bidirectional bearing strength.

Preferably, the epoxy sleeve joint is an octagonal cavity epoxy cylinder with a wall thickness of 2-3mm, the length of each side of the transverse epoxy belt is 1-2cm, and the length of each side of the longitudinal bamboo rib is 2-5 cm.

The longitudinal bamboo rib 1 can be formed into an assembly blank by staggered joint, as shown in figure 13, the assembly blank can also be formed without staggered joint, the transverse epoxy resin belt 5 replaces the transverse bamboo rib 4, the cross section of the transverse epoxy resin belt is equivalent to that of the transverse bamboo rib 4, the transverse epoxy resin belt 5 is arranged in a whole length and is combined with the longitudinal bamboo rib 1 to form a bamboo raft, and the integrity of the bamboo rib is improved. The scheme is more convenient to process.

In the invention, the longitudinal bamboo rib 1 can also be formed into a double-layer bidirectional assembly blank, when the double-layer bidirectional assembly blank is formed, the connecting nodes of the upper layer and the lower layer of the longitudinal bamboo rib are the same as those of the single-layer assembly blank, and the upper layer and the lower layer of the longitudinal bamboo rib are bonded by filling the cementing material, so that the integrity of the bamboo rib is improved, or the longitudinal bamboo rib is integrally wrapped by wrapping the cementing material, and at the moment, the bonding of the cementing material can also be omitted.

On the basis of the connection of the bamboo reinforcement, the invention provides a bamboo-based composite cavity structural slab, which comprises an upper panel 100, a lower panel 200 and a rib plate 300, wherein the upper panel, the lower panel and the rib plate form a space bamboo reinforcement framework, and an outer package cementing material is poured to form the cavity structural slab, and the structure is characterized in that:

the upper and lower panels 100, 200 are formed by assembling longitudinal bamboo ribs 1, the longitudinal bamboo ribs 1 are connected with the assembling blanks in the connection mode, namely, epoxy resin is poured at the butt joint to form epoxy resin sleeve type joints 2 for connection, and two ends of each epoxy resin sleeve type joint 2 completely wrap the longitudinal bamboo ribs 1 on two sides for a certain length;

the ribbed plate 300 is formed by a vertical short bamboo rib group blank, a ribbed plate inner bamboo rib 301 extends out of the ribbed plate 300, and the ribbed plate inner bamboo rib 301 is connected with the upper and lower face plates 100 and 200 in a gel manner.

The upper panel and the lower panel of the cavity structural plate are connected by adopting the epoxy resin sleeve type joint, the connection strength of the panel is high, the rib plate is connected with the upper panel and the lower panel by the bamboo reinforcement in the rib plate in a gelling way, the integral connection strength of the cavity structural plate is high, and the cavity structural plate has the characteristics of light weight, high strength, good ductility, good heat and sound insulation performance of the filled light heat insulation material, good waterproof and moisture-proof performance, no slippage due to the coordinated deformation of the bamboo strips and the fiber cloth, good crack resistance, good fireproof and corrosion resistance, convenient construction and installation and the like.

As shown in fig. 15-16, in an embodiment, the cavity structural slab is formed by an integrated casting process, the upper and lower panels 100 and 200 are provided with panel edge-sealed bamboo ribs 101, gaps are formed between the panel edge-sealed bamboo ribs 101, the rib plate inner bamboo ribs 301 are spaced at intervals of 20-100cm, two ends of the rib plate inner bamboo ribs 301 are inserted into the gaps between the panel edge-sealed bamboo ribs 101 on the upper and lower panels 100 and 200, and are bonded by epoxy resin 102 in the gaps between the rib plate inner bamboo ribs 301 and the panel edge-sealed bamboo ribs 101, so that the upper and lower panels and the rib plate form a space bamboo rib framework, and then an outer-wrapping cementing material is cast to form a complete cavity structural slab. The bamboo ribs are sealed by the panels of the upper panel and the lower panel, the rib plates are firmly fixed with the upper panel and the lower panel, additional structures do not need to be added, the outer packing cementing materials are integrally poured after positioning, the process is simple, and the construction is convenient.

As shown in fig. 17 to 18, in another embodiment, the cavity structure plate is formed by a slot-in bonding process, the upper and lower panels 100 and 200 are provided with panel grooves 103 at intervals inward, a certain amount of epoxy resin 102 is pre-poured into the panel grooves 103, and two ends of the bamboo reinforcement 301 in the rib plate are inserted into the panel grooves on the upper and lower panels and bonded by the epoxy resin. Through reserve the recess when panel about pouring, insert the recess with the floor, temporary location and fixed measure when the recess can regard as the construction floor on the one hand, and on the other hand floor both ends are sealed in the recess, bond through epoxy, and joint strength and wholeness are better.

Preferably, in this embodiment, a thin resin layer of less than 1mm is coated on the upper and lower panels at the connection with the rib plate in advance, and the upper and lower panels and the rib plate are firmly adhered to form a whole body by the epoxy resin in the panel groove and the thin resin layer on the panel.

The invention also provides an integrated pouring construction process of the bamboo-based composite cavity structural slab, which comprises the following steps:

firstly, assembling a panel bamboo rib blank, wherein the panel bamboo rib adopts pouring epoxy resin to form epoxy resin sleeve type joints for connection, so as to form a panel bamboo rib truss;

step two, combining blanks by using the rib plate bamboo ribs to form a rib plate bamboo rib truss, wherein the rib plate bamboo ribs extend out of the rib plate bamboo ribs at certain intervals;

positioning the panel bamboo rib trusses, and positioning the two panel bamboo rib trusses according to the positions of the upper panel and the lower panel;

positioning the bamboo rib trusses of the rib plates, inserting bamboo ribs in the rib plates between the edge-sealed bamboo ribs of the two panels, and bonding the bamboo ribs with epoxy resin;

and fifthly, forming a space bamboo reinforcement framework, erecting a mold, pouring a cementing material, and maintaining to obtain the cavity structural slab.

The integrated pouring processing technology is suitable for the cavity plate of the one-way rib plate, the one-way rib plate can be easily realized by adopting a core-pulling formwork, and the integrated pouring method has the remarkable advantages of good integrated pouring integrity, integral maintenance and no need of considering excessive panel and rib plate connecting nodes.

The invention also provides a slot-in type bonding construction process of the bamboo-based composite cavity structural slab, which comprises the following steps:

firstly, assembling a panel bamboo rib blank, wherein the panel bamboo rib adopts pouring epoxy resin to form epoxy resin sleeve type joints for connection, so as to form a panel bamboo rib truss;

step two, pouring a cementing material, arranging a panel groove at the joint of the cementing material and the rib plate, and maintaining to obtain an upper panel and a lower panel;

step three, combining blanks with the rib plate bamboo ribs to form a rib plate bamboo rib truss, wherein rib plate bamboo ribs extend out of the rib plate bamboo ribs at certain intervals, and the rib plate bamboo ribs correspond to the positions of the grooves of the panel;

pouring a cementing material, and maintaining to obtain a rib plate;

placing the lower panel on the platform, and pouring epoxy resin into the panel groove;

step six, coating a thin resin layer with the thickness of less than 1mm on the joint of the lower panel and the rib plate, inserting one end of a bamboo rib in the rib plate into the groove of the panel and pressing the bamboo rib tightly, and firmly adhering the bamboo rib and the thin resin layer by virtue of epoxy resin;

placing the upper panel on the platform, enabling the groove of the panel to face upwards, and pouring epoxy resin into the groove of the panel;

step eight, coating a thin resin layer with the thickness of less than 1mm on the joint of the upper panel and the rib plate;

and step nine, turning the lower panel and the ribbed plate obtained in the previous step, inserting the other end of the bamboo rib in the ribbed plate into the panel groove of the upper panel and pressing, and firmly bonding the bamboo rib and the thin resin layer by virtue of epoxy resin, so that the manufacture of the cavity structural plate is completed.

The slot-in type bonding is characterized in that the panel and the ribbed plate are connected together through a specific structure on the basis of prefabricating the panel and the ribbed plate, the requirement on a template is low, and the slot-in type bonding is suitable for unidirectional and bidirectional ribbed plate cavity plates, has a wide application range and is convenient for industrial production.

According to the construction process of the bamboo-based composite cavity structural slab, the components are produced in batches in a factory, the process is simple, and the industrial production degree is high; the field wet operation is less, and the environment is protected; the component has light weight, regular size, high transportation efficiency, convenient on-site hoisting construction and saves construction period and construction cost.

The component is nontoxic, harmless and nonirritating gas generation in production and use engineering, is safe to use, good in machinability, capable of being molded at low temperature, capable of being produced in four seasons, simple in product process, easy to produce, wide in application field and low in price, is an ideal green environment-friendly building material, and can be widely applied to the building field or other fields.

The cavities of the bamboo rib composite structure wall board and the floor slab can be filled with light heat-insulating materials such as rock wool, extruded sheets and the like, and the filling materials can not only insulate heat and sound, but also can be used as internal molds for pouring the wall board and the floor slab, and are integrally poured and formed in a factory; the wall plate and floor slab can also adopt the core-pulling process, and can also be formed by bonding the plates. The hollow wall plate and floor slab can be widely applied to the inner wall, the outer wall and the floor slab of industrial and civil buildings.

The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.