1. An assembled concrete pavement, which is characterized in that: the road base layer, the connecting piece and the concrete layer are sequentially arranged from bottom to top; the concrete layer is formed by splicing a plurality of prefabricated rectangular concrete plates, adjacent concrete plates are mutually lapped through staggers on the side edges to realize tight tiling, and the side where the stagger is positioned on the concrete plate is provided with a plurality of connecting holes; the connecting pieces are distributed according to staggered positions and comprise bases and a plurality of vertical rods arranged on the bases, the bases are completely embedded in the roadbed layer, and the vertical rods are inserted into connecting holes of two adjacent concrete slabs in a matched mode and are flush with the concrete layers; the staggered joint and the connecting hole are both tightly filled by asphalt.

2. An assembled concrete pavement according to claim 1, wherein: the long sides of the concrete slabs are used as longitudinal sides parallel to the center line of the road, the short sides of the concrete slabs are used as transverse sides perpendicular to the center line of the road, the length and the width of all the concrete slabs are equal when the concrete slabs are overlooked, the thickness H of each concrete slab is 18-24 cm, the width B of each concrete slab is 2-3.5 m, and the length L of each concrete slab is 3-4.5 m.

3. An assembled concrete pavement according to claim 2, wherein: the width B1 of the stagger on the concrete slab is 25-30 cm, the thickness H is H/2, and the diameter d of the connecting hole is 5-10 cm.

4. A fabricated concrete pavement according to claim 3, wherein: the height H1 of the vertical rod is H + 3-H +5cm, the diameter is equal to d, the base is strip-shaped, the thickness H2 is 3-5 cm, the length is equal to L, the width B2 is equal to B1, and the buried depth of the base is H2+ 3-H2 +5 cm.

5. An assembled concrete pavement according to claim 1, wherein: the number of the staggered edges on the concrete plates is set according to the positions of the concrete plates on the road surface, the concrete plates on the corners of the road surface adopt two staggered edges, the concrete plates on the edges of the road surface adopt three staggered edges, the rest concrete plates adopt four staggered edges, and all the concrete plates ensure that at least one staggered edge is in a pressed state.

6. An assembled concrete pavement according to claim 1, wherein: the concrete slab is made of common cement concrete slab or reinforced concrete slab, and the connecting piece is made of rustproof metal material.

7. An assembled concrete pavement according to claim 1, wherein: the roadbed layer is a semi-rigid roadbed layer, and the thickness is 15-20 cm.

8. An assembled concrete pavement according to claim 1, wherein: an asphalt surface layer is laid on the concrete layer.

9. A method of constructing a fabricated concrete pavement according to any one of claims 1 to 7, wherein: before assembling concrete slabs, determining size parameters of the concrete slabs according to the structural thickness of a pavement and the width of a road width, prefabricating the concrete slabs, marking dividing lines on a roadbed layer according to the length and the width of the concrete slabs, determining the positions of connecting pieces according to the dividing lines, slotting at corresponding positions, positioning the connecting pieces in the slots, placing the slots in the slots, backfilling the slots, and compacting; when the concrete slabs are assembled, the concrete slabs are sequentially and gradually inserted on the vertical rods in the longitudinal direction and the transverse direction through the connecting holes in an aligned mode, and the staggered joints and the connecting holes are tightly filled through hot asphalt.

10. A method of constructing a fabricated concrete pavement as claimed in claim 9, wherein: after the concrete slab is assembled, the anti-crack strips are adhered to the upper sides of the staggered joints, then adhesive layers are sprayed, and finally asphalt surface layers are laid.

Background

At present, the concrete pavement is generally constructed in a cast-in-place mode, the maintenance period is long, the construction period is too long, and the cost is increased.

Disclosure of Invention

The invention aims to provide an assembled concrete pavement and a construction method thereof, which have short construction period, quick maintenance and tight combination.

The technical scheme adopted by the invention is as follows:

an assembled concrete pavement comprises a road base layer, connecting pieces and a concrete layer which are arranged from bottom to top in sequence; the concrete layer is formed by splicing a plurality of prefabricated rectangular concrete plates, adjacent concrete plates are mutually lapped through staggers on the side edges to realize tight tiling, and the side where the stagger is positioned on the concrete plate is provided with a plurality of connecting holes; the connecting pieces are distributed according to staggered positions and comprise bases and a plurality of vertical rods arranged on the bases, the bases are completely embedded in the roadbed layer, and the vertical rods are inserted into connecting holes of two adjacent concrete slabs in a matched mode and are flush with the concrete layers; the staggered joint and the connecting hole are both tightly filled by asphalt.

Further, an asphalt surface layer is laid on the concrete layer.

Furthermore, the long sides of the concrete slabs are used as longitudinal sides parallel to the center line of the road, the short sides of the concrete slabs are used as transverse sides perpendicular to the center line of the road, the length and the width of all the concrete slabs are equal when the concrete slabs are overlooked, the thickness H of each concrete slab is 18-24 cm, the width B of each concrete slab is 2-3.5 m, and the length L of each concrete slab is 3-4.5 m.

Furthermore, the width B1 of the staggered opening on the concrete slab is 25-30 cm, the thickness H is H/2, and the diameter d of the connecting hole is 5-10 cm.

Furthermore, the height H1 of the vertical rod is H + 3-H +5cm, the diameter is equal to d, the base is strip-shaped, the thickness H2 is 3-5 cm, the length is equal to L, the width B2 is equal to B1, and the buried depth of the base is H2+ 3-H2 +5 cm.

Furthermore, the number of the staggered edges on the concrete plates is set according to the positions of the concrete plates on the road surface, the concrete plates on the corners of the road surface adopt two staggered edges, the concrete plates on the edges of the road surface adopt three staggered edges, the rest concrete plates adopt four staggered edges, and all the concrete plates ensure that at least one staggered edge is in a pressed state.

Furthermore, the concrete slab is made of a common cement concrete slab or a reinforced concrete slab, and the connecting piece is made of an antirust metal material.

Further, the roadbed layer is a semi-rigid roadbed layer, and the thickness is 15-20 cm.

The construction method of the fabricated concrete pavement comprises the following steps: before assembling the concrete slabs, determining the size parameters of the concrete slabs according to the thickness of a pavement structure and the width of a road width, prefabricating the concrete slabs, marking dividing lines on a road base layer according to the length and the width of the concrete slabs, determining the positions of connecting pieces according to the dividing lines, slotting at corresponding positions, positioning the connecting pieces in the slots, placing the connecting pieces in the slots, backfilling the slots, and compacting; when the concrete slabs are assembled, the concrete slabs are sequentially and gradually inserted on the vertical rods in the longitudinal direction and the transverse direction through the connecting holes in an aligned mode, and the staggered joints and the connecting holes are tightly filled through hot asphalt.

Furthermore, after the concrete slab is assembled, anti-crack strips are adhered to the upper sides of the staggered joints, then adhesive layers are sprayed, and finally asphalt surface layers are laid.

The invention has the beneficial effects that:

concrete slabs are prefabricated in advance and assembled on site, cast-in-place maintenance time is saved, the construction period is short, corresponding concrete slabs can be replaced quickly when the pavement is damaged, quick maintenance is achieved, the connecting pieces guarantee tight connection among the concrete slabs, and the assembled concrete layers are combined tightly.

Drawings

Fig. 1 is a plan view of a concrete layer in an embodiment of the present invention.

Fig. 2 is a schematic view of various types of concrete panels of fig. 1.

Fig. 3 is a schematic view of a connector in an embodiment of the invention.

FIG. 4 is a cross-sectional view of a fabricated concrete roadway in an embodiment of the present invention.

Fig. 5 is a cross-sectional view of the asphalt pavement of fig. 4.

In the figure: 1. a concrete layer; 1-1. concrete slab; 1-2, staggering; 2. connecting holes; 3. a connecting member; 3-1, vertical bar; 3-2. a base; 4. a roadbed layer; 5. crack resistant strips; 6. sticking a layer; 7. and (5) an asphalt surface layer.

Detailed Description

The invention is further illustrated by the following figures and examples.

As shown in fig. 1 to 4, an assembled concrete pavement comprises a road base layer 4, a connecting piece 3 and a concrete layer 1 which are arranged from bottom to top in sequence; the concrete layer 1 is formed by splicing a plurality of prefabricated rectangular concrete plates 1-1, the adjacent concrete plates 1-1 are mutually lapped through staggers 1-2 on the side edges to realize tight tiling, and the edge of the stagger 1-2 on the concrete plate 1-1 is provided with a plurality of connecting holes 2; the connecting pieces 3 are distributed according to the position of the staggered joint 1-2 and comprise bases 3-2 and a plurality of vertical rods 3-1 arranged on the bases 3-2, the bases 3-2 are completely embedded in the roadbed layer 4, and the vertical rods 3-1 are matched and inserted into the connecting holes 2 of two adjacent concrete slabs 1-1 and are flush with the concrete slabs 1; the staggered 1-2 seams and the connecting holes 2 are all filled and compacted by asphalt. The concrete slabs 1-1 are prefabricated in advance and assembled on site, cast-in-place maintenance time is saved, construction period is short, corresponding concrete slabs 1-1 can be replaced quickly when a road surface is damaged, quick maintenance is achieved, tight connection among the concrete slabs 1-1 is guaranteed through the connecting pieces, and the assembled concrete slabs 1 are combined tightly.

If the pavement structure is designed as a rigid-flexible composite pavement, as shown in fig. 5, an asphalt surface layer 7 may be laid on top of the concrete layer 1.

As shown in figures 1 and 2, the number of the staggered openings 1-2 on the concrete slab 1-1 is set according to the position of the concrete slab 1-1 on the road surface, the concrete slab 1-1 on the corner of the road surface adopts two staggered openings 1-2, the concrete slab 1-1 on the edge of the road surface adopts three staggered openings 1-2, the rest concrete slabs 1-1 adopt four staggered openings 1-2, and all the concrete slabs 1-1 ensure that at least one staggered opening 1-2 is in a compressed state. In the embodiment, the device is divided into A, B, C, D, E, F, G, H, I, J, K, L twelve types according to the number of staggered sides 1-2 and the stress state.

In this embodiment, the concrete slab 1-1 may be a common cement concrete slab or a reinforced concrete slab, and the connecting member 3 is preferably made of a rust-proof metal material.

The construction method of the fabricated concrete pavement comprises the following steps:

s1, assembling the concrete slab 1-1;

determining the size parameters of a concrete slab 1-1 according to the thickness of a pavement structure and the width of a road width, and prefabricating the concrete slab 1-1, wherein the concrete slab 1-1 is prefabricated by the following steps: erecting a template (if longitudinal and transverse steel bars need to be laid on a reinforced concrete slab), → pouring concrete → vibrating and compacting concrete → leveling top surface → roughening top surface, grooving → maintaining to reach design strength → stripping.

Dividing lines are marked on a roadbed layer 4 according to the length and the width of a concrete slab 1-1, the position of a connecting piece 3 is determined according to the dividing lines, a groove is formed in the corresponding position, the length and the width of the groove are all larger than a base 3-2 (the length and the width are 20-30 cm more, the depth is 3-5 cm more, and the top of a vertical rod 3-1 is consistent with the designed height of the concrete layer 1), the connecting piece 3 is positioned and placed in the groove, and the groove is backfilled and compacted tightly (compaction can be carried out by means of a small road roller, and roadbed layer materials can be used for backfilling).

S2, assembling the concrete slab 1-1;

the concrete slabs 1-1 are sequentially and gradually inserted on the vertical rods 3-1 through the connecting holes 2 along the longitudinal direction and the transverse direction, and the staggered 1-2 seams and the connecting holes 2 are tightly filled by hot asphalt.

As shown in fig. 5, if the pavement structure is designed as a rigid-flexible composite pavement, after the concrete slab 1-1 is assembled, the anti-crack strips 5 (the anti-crack strips 5 can be polyester fiberglass cloth or anti-crack strips) are firstly adhered on the upper sides of the staggered joints 1-2, then the adhesive layer 6 is sprayed, and finally the asphalt surface layer 7 is laid.

The specific size design is as follows:

the long edge of the concrete slab 1-1 is used as a longitudinal edge parallel to the center line of a road, the short edge of the concrete slab 1-1 is used as a transverse edge perpendicular to the center line of the road, the length and the width of all the concrete slabs 1-1 are equal when the concrete slab 1-1 is overlooked, the appearance is neat and attractive, the actual size of the concrete slab 1-1 is adjusted according to actual needs, and the thickness H, the width B and the length L of the concrete slab 1-1 are 18-24 cm, 2-3.5 m and 3-4.5 m respectively. In the present embodiment, the concrete slab 1-1 has a thickness H of 22cm, a width B of 3m, and a length L of 4 m.

The width B1 of the stagger 1-2 on the concrete slab 1-1 is 25-30 cm, the thickness H is H/2, and the diameter d of the connecting hole 2 is 5-10 cm. In this embodiment, the width B1 of the offset 1-2 of the concrete slab 1-1 is 22cm, the thickness h is 11cm, and the diameter d of the connecting hole 2 is 7 cm.

The height H1 of the vertical rod 3-1 is H + 3-H +5cm, the diameter is equal to d, the base 3-2 is strip-shaped, the thickness H2 is 3-5 cm, the length is equal to L, the width B2 is equal to B1, and the burial depth of the base 3-2 is H2+ 3-H2 +5 cm. In this embodiment, the height H1 of the vertical bar 3-1 is 25cm and the diameter is 7cm, the thickness H2 of the base 3-2 is 5cm, the length is 4m, the width B2 is 22cm, the buried depth of the base 3-2 is 8cm, the length and width of the groove are 25cm more, and the depth is 3cm more.

The roadbed layer 4 is a semi-rigid roadbed layer with a thickness of 15-20 cm. In this embodiment, the roadbed 4 is a 2 x 18cm thick cement stabilized macadam base.

In this example, the asphalt surface course 7 is 4cm thick AC-13 fine grain asphalt concrete +6cm thick AC-16 medium grain asphalt concrete.

It will be understood that modifications and variations can be made by persons skilled in the art in light of the above teachings and all such modifications and variations are intended to be included within the scope of the invention as defined in the appended claims.