1. The utility model provides an adopt wind-powered electricity generation of shaped steel ring beam connection to mix prefabricated tower section of thick bamboo of tower which characterized in that: mix a prefabricated tower section of thick bamboo of tower including wind-powered electricity generation, wind-powered electricity generation mixes a prefabricated tower section of thick bamboo of tower and is assembled along direction of height by a plurality of tower sections festival section and constitute, and is adjacent be provided with shaped steel ring beam connection structure between the tower section festival section, shaped steel ring beam connection structure is including setting up the pre-buried shaped steel plate in the last of last tower section festival section bottom and setting up the pre-buried shaped steel plate under at tower section festival section top, go up pre-buried shaped steel plate with through bolted connection and formation grout cavity down between the pre-buried shaped steel plate, it has the obturator to.

2. The wind power hybrid tower prefabricated tower cylinder connected by the steel ring beams as claimed in claim 1, is characterized in that: the bottom of the upper tower drum section is provided with two upper embedded section steel plates at intervals along the thickness direction of the upper tower drum section, and the top of the lower tower drum section is provided with two lower embedded section steel plates at intervals along the thickness direction of the lower tower drum section; the two upper pre-buried steel section plates and the two lower pre-buried steel section plates are arranged in a staggered mode.

3. The wind power hybrid tower prefabricated tower cylinder connected by the steel ring beams as claimed in claim 2, characterized in that: the pre-buried shaped steel plate in the tower section of thick bamboo outside, the pre-buried shaped steel plate in the tower section of thick bamboo outside down, the pre-buried shaped steel plate in the tower section of thick bamboo inboard, the pre-buried shaped steel plate in tower section of thick bamboo inboard down of going up are pieced together in proper order from the tower section of thick bamboo outside to inboard direction.

4. The wind power hybrid tower prefabricated tower cylinder connected by the steel ring beams as claimed in claim 3, wherein: the steel plate embedded outside the lower tower cylinder, the steel plate embedded inside the upper tower cylinder and the steel plate embedded inside the lower tower cylinder are provided with non-threaded holes for bolts to pass through; and the embedded steel plate outside the upper tower cylinder is provided with a threaded hole fixed with the bolt.

5. The wind power hybrid tower prefabricated tower cylinder connected by the steel ring beams as claimed in claim 4, wherein: the hole diameter of the unthreaded hole is 0.2d-0.5d larger than the diameter of the bolt shank of the bolt.

6. The wind power hybrid tower prefabricated tower barrel connected by the steel ring beams as claimed in claim 1 or 2, wherein: and the upper embedded steel plate and/or the lower embedded steel plate are/is provided with a grouting hole and a grout outlet which are communicated with the grouting cavity.

7. The wind power hybrid tower prefabricated tower cylinder connected by the steel ring beams as claimed in claim 1, is characterized in that: a rubber seal is arranged between the upper embedded steel plate and the lower tower cylinder segment; and the rubber seal strip is arranged between the lower embedded steel plate and the upper tower drum section.

8. The wind power hybrid tower prefabricated tower cylinder connected by the steel ring beams as claimed in claim 1, is characterized in that: the surface of the screw of the bolt, which is positioned in the grouting cavity, is a rough surface.

9. A construction method for a prefabricated tower barrel of a wind power hybrid tower connected by section steel ring beams, which relates to any one of claims 1 to 8, is characterized in that: the construction method comprises the following steps:

hoisting an upper tower drum segment to be connected to the upper side of a lower tower drum segment, and aligning an upper embedded steel plate at the bottom of the upper tower drum segment with a lower embedded steel plate at the top of the lower tower drum segment;

fixedly connecting an upper embedded steel plate and a lower embedded steel plate into a whole through bolts;

grouting is conducted on grouting between the upper embedded steel section plate and the lower embedded steel section plate, and therefore a section steel ring beam connecting structure is formed between the upper tower drum section and the lower tower drum section.

Background

With the acceleration of the development process of wind power projects, the height of the hub of the tower presents a development trend to more than 100m in order to meet the requirements of units with turbulence resistance and large shear in low wind speed areas, hills and forest regions. The lower half part adopts a concrete tower drum, and the upper half part adopts a mixed tower frame of a steel tower drum, so that the problems of insufficient structural rigidity, overhigh manufacturing cost, difficult transportation and the like after the height of the traditional steel tower drum is overlarge are solved, the high-altitude requirement of the large-scale wind turbine generator is met by the superior comprehensive performance of the traditional steel tower drum, and the application prospect is wide.

The traditional cast-in-place concrete tower barrel has the problems of complex construction, long maintenance period, complex template disassembly, difficulty in guaranteeing the concrete construction quality and the like, and is difficult to meet the requirements of mass and flow construction of large-scale wind generating sets.

At present, a method for penetrating bars and setting grout is generally adopted for longitudinal connection of concrete segments of a wind power tower, and the method is often difficult to realize high-altitude perforation alignment; the grouting area is small, the grouting material has poor fluidity in a narrow area, grouting is difficult to realize, the tower barrel is hidden in danger, a temporary support template is required to be arranged, and time and labor are wasted; the upper and lower sections of the square and circular tower barrel are longitudinally connected without staggered joint overlapping, and the integrity of the square and circular tower barrel is poorer than that of a round prefabricated assembly tower barrel with staggered joint overlapping; the shearing resistance is also weak when the bar-penetrating mortar is connected with the upper segment and the lower segment.

Disclosure of Invention

The invention aims to provide a wind power hybrid tower prefabricated tower cylinder connected by a section steel ring beam and a construction method thereof, wherein the upper tower cylinder section and the lower tower cylinder section of the wind power hybrid tower prefabricated tower cylinder are efficiently spliced by a section steel ring beam connecting structure, so that the construction efficiency is ensured, and the construction quality is effectively improved.

The purpose of the invention is realized by the following technical scheme:

the utility model provides an adopt wind-powered electricity generation of shaped steel ring beam connection to mix prefabricated tower section of thick bamboo of tower which characterized in that: mix a prefabricated tower section of thick bamboo of tower including wind-powered electricity generation, wind-powered electricity generation mixes a prefabricated tower section of thick bamboo of tower and is assembled along direction of height by a plurality of tower sections festival section and constitute, and is adjacent be provided with shaped steel ring beam connection structure between the tower section festival section, shaped steel ring beam connection structure is including setting up the pre-buried shaped steel plate in the last of last tower section festival section bottom and setting up the pre-buried shaped steel plate under at tower section festival section top, go up pre-buried shaped steel plate with through bolted connection and formation grout cavity down between the pre-buried shaped steel plate, it has the obturator to pour into in the grout cavity.

The bottom of the upper tower drum section is provided with two upper embedded section steel plates at intervals along the thickness direction of the upper tower drum section, and the top of the lower tower drum section is provided with two lower embedded section steel plates at intervals along the thickness direction of the lower tower drum section; the two upper pre-buried steel section plates and the two lower pre-buried steel section plates are arranged in a staggered mode.

The pre-buried shaped steel plate in the tower section of thick bamboo outside, the pre-buried shaped steel plate in the tower section of thick bamboo outside down, the pre-buried shaped steel plate in the tower section of thick bamboo inboard, the pre-buried shaped steel plate in tower section of thick bamboo inboard down of going up are pieced together in proper order from the tower section of thick bamboo outside to inboard direction.

The steel plate embedded outside the lower tower cylinder, the steel plate embedded inside the upper tower cylinder and the steel plate embedded inside the lower tower cylinder are provided with a hole passage for a bolt to pass through; and the embedded steel plate outside the upper tower cylinder is provided with a threaded hole fixed with the bolt.

The hole diameter of the unthreaded hole is 0.2d-0.5d larger than the diameter of the bolt shank of the bolt.

And the upper embedded steel plate and/or the lower embedded steel plate are/is provided with a grouting hole and a grout outlet which are communicated with the grouting cavity.

A rubber seal is arranged between the upper embedded steel plate and the lower tower cylinder segment; and the rubber seal strip is arranged between the lower embedded steel plate and the upper tower drum section.

The surface of the screw of the bolt, which is positioned in the grouting cavity, is a rough surface.

A construction method for the wind power hybrid tower prefabricated tower barrel connected by the section steel ring beams is characterized by comprising the following steps: the construction method comprises the following steps:

hoisting an upper tower drum segment to be connected to the upper side of a lower tower drum segment, and aligning an upper embedded steel plate at the bottom of the upper tower drum segment with a lower embedded steel plate at the top of the lower tower drum segment;

fixedly connecting an upper embedded steel plate and a lower embedded steel plate into a whole through bolts;

grouting is conducted on grouting between the upper embedded steel section plate and the lower embedded steel section plate, and therefore a section steel ring beam connecting structure is formed between the upper tower drum section and the lower tower drum section.

The invention has the advantages that:

1) the steel plate structure is different from the problem that the hole alignment construction difficulty is high in the high altitude of the traditional steel bars, the steel plate structure adopted by the invention is large in opening and relatively easy to align, and the steel plate structure is gradually clamped and aligned along the angle of the steel plate in the descending installation process of the tower. The operation is simpler, the construction is quicker, and the high-altitude operation difficulty is reduced.

2) Compare in the problem that traditional single reinforcing bar connection anti sidesway ability is relatively weak, shaped steel combination ring beam, the big anti sidesway ability of rigidity is strong, and the ability of shearing promotes by a wide margin.

3) The problem that the longitudinal joint of the square and circular tower barrel cannot be in staggered joint overlapping is solved, the advantages of high rigidity and high integrity of the joint of the section steel ring beam are utilized, the longitudinal joint can be regarded as a conversion layer to disperse stress transfer of sections of the upper tower barrel and the lower tower barrel, and the problems of weakening of overall rigidity and stress concentration caused by the through of the longitudinal joint are solved.

4) The ring beam grouting area is large, the inside shielding is less, the grouting material flows more fully, the grouting quality is better, the internal pressure grouting does not need to additionally support a template, and the grouting device is convenient and fast.

5) The steel sheet can provide certain vertical strength, need not to wait that the grout material reaches intensity completely and just carries out the hoist and mount work of next segment, has practiced thrift latency, has promoted the hoist and mount speed of vertical tower section of thick bamboo segment, has reduced the nest worker time of workman, machines.

Drawings

FIG. 1 is a schematic diagram of a square-circular tower in which the present invention may be used;

FIG. 2 is a schematic view showing a coupling structure of a ring beam of section steel according to the present invention;

FIG. 3 is a sectional view showing a coupling structure of a ring beam of section steel according to the present invention;

FIG. 4 is a schematic structural diagram of a lower tower according to the present invention.

Detailed Description

The features of the present invention and other related features are described in further detail below by way of example in conjunction with the following drawings to facilitate understanding by those skilled in the art:

as shown in fig. 1-4, the labels 1-13 are respectively shown as: go up tower section 1, tower section 2 down, go up the pre-buried shaped steel plate 3 in tower section outside, the pre-buried shaped steel plate 4 in tower section outside down, go up the pre-buried shaped steel plate 5 in tower section inboard, the pre-buried shaped steel plate 6 in tower section inboard down, steel backing plate 7, bolt head 8, shank of bolt 9, rubber seal 10, grout hole 11, grout outlet 12, wind-powered electricity generation mix tower prefabricated tower section of thick bamboo 13.

Example (b): as shown in fig. 1, the prefabricated tower cylinder 13 of the wind power hybrid tower connected by the steel ring beams in the embodiment can be a wind power hybrid tower prefabricated tower cylinder 13 of a square-circle structure and can be of a diameter-variable structure, that is, the outline dimension of the bottom is larger than that of the top, and the outline dimension of the prefabricated tower cylinder 13 of the wind power hybrid tower is gradually reduced from the bottom to the top.

As shown in fig. 2 and 3, the prefabricated tower 13 of the wind power hybrid tower in the embodiment may be formed by assembling a plurality of tower segments, and the plurality of tower segments are sequentially assembled and fixed in the height direction to form a whole. The prefabricated tower 13 of the wind power hybrid tower can be divided into an upper tower segment 1 and a lower tower segment 2 along the height direction, wherein the upper tower segment 1 refers to the tower segment located above the two adjacent tower segments, and the lower tower segment 2 refers to the tower segment located below the two adjacent tower segments. A steel ring beam connecting structure is arranged between the upper tower drum segment 1 and the lower tower drum segment 2 so as to connect and fix the upper tower drum segment 1 and the lower tower drum segment 2 to form a whole.

Specifically, as shown in fig. 2 and 3, an upper tower tube outside embedded steel plate 3 and an upper tower tube inside embedded steel plate 5 are embedded in the bottom of the upper tower tube segment 1 along the circumferential direction thereof, wherein the outer side surface of the upper tower tube outside embedded steel plate 3 is flush with the outer side surfaces of the upper tower tube segment 1 and the lower tower tube segment 2. The top of tower section of thick bamboo section 2 is pre-buried along its circumference has lower tower section of thick bamboo outside pre-buried shaped steel plate 4 and lower tower section of thick bamboo inboard pre-buried shaped steel plate 6 down, and wherein lower tower section of thick bamboo inboard pre-buried shaped steel plate 6 is parallel and level with the inboard surface of last tower section of thick bamboo section 1 and lower tower section of thick bamboo section 2 mutually.

With reference to fig. 2 to 4, tapping and tapping are performed on the outer pre-embedded steel plate 3 to form an internal threaded hole matched with the screw thread of the bolt rod 9, smooth round holes for the bolt rod 9 to pass through are respectively formed in corresponding positions on the lower tower outer pre-embedded steel plate 4, the upper tower inner pre-embedded steel plate 5 and the lower tower inner pre-embedded steel plate 6, and the inside of each smooth round hole is a hole. After the pre-buried shaped steel plates of the upper tower section 1 and the lower tower section 2 are spliced, the bolt rod 9 can sequentially penetrate through the smooth round holes to the inner threaded hole from inside to outside and is fixedly connected with the inner threaded hole through thread matching so as to connect the pre-buried shaped steel plates into a whole.

As shown in fig. 3, the embedded steel plate 3 outside the upper tower, the embedded steel plate 4 outside the lower tower, the embedded steel plate 5 inside the upper tower, and the embedded steel plate 6 inside the lower tower are spliced in a staggered manner in order to ensure that the stress and the force transmission between the upper tower segment 1 and the lower tower segment 2 are uniform.

As shown in fig. 2 and 3, a cavity is formed between the steel plate 4 embedded on the outer side of the lower tower and the steel plate 5 embedded on the inner side of the upper tower, and the cavity is a grouting chamber. The upper portion and the lower portion of the pre-buried shaped steel plate 3 on the outer side of the upper tower and the pre-buried shaped steel plate 4 on the outer side of the lower tower are respectively provided with a grout outlet 12 and a grout inlet 11 which are communicated with the grout chamber, the grout inlet 11 can be used for filling a filling material into the grout chamber 10 to form a shaped steel ring beam connecting structure, and the grout outlet 12 is used for discharging redundant filling materials and plays a role in judging whether the inside of the grout chamber is completely filled.

In order to ensure the sealing effect, as shown in fig. 3, rubber seals 10 are arranged between the steel plate 3 embedded on the outer side of the upper tower, the steel plate 5 embedded on the inner side of the upper tower and the lower tower segment 2; meanwhile, rubber seals 10 are also arranged between the embedded steel plate 4 on the outer side of the lower tower cylinder, the embedded steel plate 6 on the inner side of the lower tower cylinder and the upper tower cylinder segment 1; the rubber seal 10 deforms under the action of vertical pressure, and fills gaps between the embedded steel plates and tower sections, so that water and slurry are prevented from leaking, and construction quality is effectively improved.

The bolt pole 9 is one end area bolt head 8, and the other end has the segment screw thread with the internal thread hole looks adaptation on the pre-buried shaped steel plate 3 in the last tower section of thick bamboo outside, and middle screw rod surface is rough surface, inserts by tower section of thick bamboo segment inboard, passes steel backing plate 7, the pre-buried shaped steel plate 4 in the lower tower section of thick bamboo outside in proper order, goes up the inboard pre-buried shaped steel plate 5 of tower section of thick bamboo, the inboard pre-buried shaped steel plate 6 of tower section of thick bamboo down, screws up in the inside anchor of the pre-buried shaped steel plate 3 screw holes in the last tower section of thick bamboo outside. When grouting is completed, the rough surface of the bolt shank 9 can further increase the connectivity with the filling material, further improving the integrity. Meanwhile, the hole channels of the smooth round holes on the pre-buried steel plate 4 on the outer side of the lower tower cylinder, the pre-buried steel plate 5 on the inner side of the upper tower cylinder and the pre-buried steel plate 6 on the inner side of the lower tower cylinder are 0.2d-0.5d larger than the diameter of the bolt rod 9, wherein d is the diameter of the bolt rod 9; thus, the bolt shank 9 can be perforated easily, and the gap between each smooth circular hole and the bolt shank 9 can be filled with the poured filler material, thereby improving the connectivity.

In the construction of the embodiment, the method specifically comprises the following steps:

1) the upper tower drum segment 1 to be connected is hoisted and placed right above the lower tower drum segment 2, and the edge of the embedded steel plate 3 on the outer side of the upper tower drum segment 1 is aligned with the outer side edge step of the lower tower drum segment 2, so that the upper tower drum segment 1 and the lower tower drum segment are spliced into a whole. This outer side edge step sets up in the outer side edge of tower section of thick bamboo section 2 down as location structure, its platform for with the pre-buried shaped steel plate 3 looks adaptations in the upper tower section of thick bamboo outside for fix a position pre-buried shaped steel plate 3 in the upper tower section of thick bamboo outside.

2) One end of a bolt rod 9 sequentially penetrates through a steel backing plate 7, a lower tower cylinder outer side embedded steel plate 4, an upper tower cylinder inner side embedded steel plate 5 and a lower tower cylinder inner side embedded steel plate 6, the bolt rod 9 is anchored and screwed on the upper tower cylinder outer side embedded steel plate 3, and the other end of the bolt rod 9 is anchored through a bolt head 8.

3) And performing pressure grouting from the grouting holes 11 on the outer side of the tower cylinder segment, and performing hole sealing treatment after grout is discharged from the grout outlet holes 12 to form a steel-concrete combined steel ring beam connecting structure so as to connect the upper tower cylinder segment 1 and the lower tower cylinder segment 2 into a whole.

In the embodiment, in specific implementation: the rubber seal 10 can be made of rubber with high elastic modulus, high bearing capacity and good durability, and is adhered to the corresponding positions of the overhanging steel plates of the upper tower tube segment 1 and the lower tower tube segment 2 by building glue.

Although the conception and the embodiments of the present invention have been described in detail with reference to the drawings, those skilled in the art will recognize that various changes and modifications can be made therein without departing from the scope of the appended claims, and therefore, they are not to be considered repeated herein.