CN219709954U - Concrete U-shaped roadbed connection structure - Google Patents

Abstract

The utility model provides a concrete U-shaped roadbed connecting structure which comprises a bottom plate, a first lower side wall, a second lower side wall, a first upper side wall, a second upper side wall, a connecting steel plate, connecting bolts, side wall bolts, longitudinal prestressed tendons and the like. The bottom plate, the first lower side wall, the second lower side wall, the first upper side wall and the second upper side wall are prefabricated and then transported to the site, the bottom plate, the first lower side wall and the second lower side wall are assembled, the first lower side wall, the first upper side wall, the second lower side wall and the second upper side wall are assembled, the second upper side wall and the second lower side wall are assembled, longitudinal prestressed tendons are tensioned among the sections, and the construction of the connecting structure among the components of the concrete U-shaped roadbed is completed. The utility model has the advantages of green environmental protection, small construction interference, high speed and the like of the prefabrication and assembly method, overcomes the defects of the prior art, and meets the requirements of reliable stress, good integrity and high assembly efficiency.

Description

Concrete U-shaped roadbed connection structure

Technical Field

The utility model relates to the field of roadbed structure construction, in particular to a concrete U-shaped roadbed connection structure.

Background

The U-shaped roadbed structure is widely applied to railways, urban rail transit and municipal works, and long sections of U-shaped roadbed structures are often arranged at two ends of a high-speed railway engineering tunnel. The traditional U-shaped roadbed adopts a reinforced concrete structure, is constructed by a cast-in-situ method, has the problems of long construction period, low steel bar binding efficiency, large number of support templates and the like, changes the traditional construction mode, adopts component prefabrication and field rapid installation, and has more and more related research and engineering application in recent years.

The U-shaped roadbed structure of the high-speed rail or the urban rail is large in section size, the structure is divided into a plurality of prefabricated components by adopting prefabricated construction, the prefabricated components are assembled on site, the connecting structure is core and key, the connecting structure not only meets the whole stress requirement, but also has good waterproof effect, and meets the high requirements of the high-speed railway on settlement and smoothness of the line, meanwhile, the assembly is quick, and the on-site assembly is guaranteed to be efficient. Therefore, developing a connection structure satisfying the above requirements is an urgent problem to be studied and solved.

Disclosure of Invention

In view of the above, the utility model aims to provide a concrete U-shaped roadbed connecting structure, which exerts the advantages of green environmental protection, small construction interference, high speed and the like of a prefabrication and assembly construction method, overcomes the defects existing in the prior art, and meets the requirements of reliable stress, good integrity and high assembly efficiency.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a concrete U type road bed connection structure, includes a plurality of bottom plate, a plurality of lower part side wall first, a plurality of lower part side wall second, a plurality of upper portion side wall first and a plurality of upper portion side wall second, the bottom plate is assembled with lower part side wall first, lower part side wall second with assemble between the upper portion side wall second, upper portion side wall second is assembled each other, lower part side wall second is assembled each other, forms concrete U type road bed connection structure.

Further, the bottom plate, the first lower side wall, the second lower side wall, the first upper side wall and the second upper side wall are prefabricated in factories and then transported to the site.

Further, the longitudinal prestressed tendons are arranged among the bottom plate, the first lower side wall, the second lower side wall, the first upper side wall and the second upper side wall, and are tensioned and anchored longitudinally.

Further, the bottom plate is arranged below the track plate, and the transverse dimension of the bottom plate exceeds the track plate, so that no splice seam is arranged below the track plate, and the deformation integrity of a structure below the track is ensured; the bottom plate sets up the bottom plate concave block in four corners and side, the bottom plate concave block is lower than the bottom plate in bottom plate top surface, bottom surface direction of height, forms groove structure.

Further, the first lower side wall comprises a bottom horizontal plate and a side vertical plate, the bottom horizontal plate is opposite to the bottom plate, side wall concave blocks are arranged at the positions, opposite to the bottom plate concave blocks, of the first lower side wall, and a top plate of the first lower side wall is arranged at the top of the first lower side wall; the second side wall comprises a bottom horizontal plate and a side vertical plate, the bottom horizontal plate is opposite to the bottom plate, side wall concave blocks are arranged at the positions, opposite to the bottom plate concave blocks, of the second side wall, a second side wall top plate is arranged at the top of the second side wall, a second side wall vertical rib is arranged on the side face of the second side wall, and the second side wall vertical rib, the second side wall top plate and the bottom horizontal plate are connected with each other to form a whole.

Further, an upper side wall bottom plate is arranged at the bottom of the first upper side wall; the bottom of the second upper side wall is provided with an upper side wall bottom plate, the side surface of the second upper side wall is provided with an upper side wall vertical rib, and the upper side wall vertical rib and the upper side wall bottom plate are connected with each other to form a whole.

Further, a connecting steel plate is arranged at the top and the bottom between the bottom plate concave block and the side wall concave block, bolt holes are formed in the bottom plate concave block and the side wall concave block, the connecting steel plate is provided with the bolt holes, connecting bolts penetrate into the bolt holes, the upper connecting steel plate and the lower connecting steel plate are installed through the fixing connecting bolts, a post-pouring belt is arranged between the bottom plate concave block and the side wall concave block, and the connecting steel plate and the connecting bolts are sealed through concrete or mortar.

Further, bolt holes are formed in the lower side wall top plate and the upper side wall bottom plate, the lower side wall top plate and the upper side wall bottom plate are connected through side wall bolts, the side wall bolts penetrate through the side wall top plate and the upper side wall bottom plate during assembly, then the side wall bolt base plate is installed, and the side wall bolts are screwed to connect the lower side wall top plate and the upper side wall bottom plate.

Furthermore, or the side wall bolts are pre-buried in the lower side wall top plate, when the side wall bolts are assembled, the side wall bolts penetrate into the bolt holes of the upper side wall bottom plate, the side wall bolts are constructed again for joint filling by the fixing bolts, and the connection between the side wall bolts and the fixing bolts is completed.

Further, a plurality of bolt holes are formed in the upper side wall vertical ribs and the lower side wall vertical ribs, and after the adjacent upper side wall vertical ribs/lower side wall vertical ribs are spliced, longitudinal bolts penetrate through the bolt holes to fix the vertical bolts, so that the splicing between the upper side wall vertical ribs and the splicing between the lower side wall vertical ribs is realized.

Further, the first upper side walls are provided with upper side wall tenons, tenons of two adjacent first upper side walls are correspondingly arranged, and are mutually aligned when assembled, and the mutual stress of the tenons of the two upper side walls is ensured by the tenons of the side walls, so that the integrity of the first upper side walls is enhanced; a waterproof pad is arranged in the middle of the side wall tenons to prevent water flow from entering the inner side from the outer side of the first side wall at the upper part, and meanwhile, the waterproof performance of the spliced seam can be enhanced due to the nonlinear seam between the side wall tenons; the side wall tenons are provided with tenons, after the side wall tenons are assembled, the side wall tenons are connected through the tenons, so that the connection performance and the shearing resistance of the side wall tenons are enhanced, the function of pressing the waterproof pad is achieved, and the waterproof performance is enhanced.

Compared with the prior art, the concrete U-shaped roadbed connecting structure has the following advantages:

1. the bottom plate is connected with the side wall by adopting a connecting steel plate, so that the assembly is rapid, the bending resistance of the top and the bottom of the plate is provided by the upper and lower connecting steel plates, and the problems of dense steel bars and difficult connection between the plates are solved; the connecting steel plate can be applied after the components are in place, so that the problem that the splicing precision caused by splicing a plurality of plates is difficult to control is solved.

2. Vertical ribs are arranged on one side of the side wall at a certain distance along the longitudinal direction, and are connected through bolts, so that the integrity between the longitudinal side walls is enhanced, uneven settlement between rings is prevented, meanwhile, the bending resistance of the side wall is enhanced by the vertical ribs, and the external load resistance of the side wall is improved.

3. The upper side wall and the lower side wall are connected through the top, the bottom plate and the bolts, the problem that the connection of the steel bars of the vertical structure of the side wall is complex is solved, and meanwhile, the stability and the bending resistance of the side wall are enhanced by the top and the bottom plate.

4. The assembly seam is not arranged on the bottom plate, so that the integrity of the lower structure of the track slab is guaranteed, and the U-shaped roadbed structure is guaranteed through the double connection of the longitudinal prestressed tendons and the longitudinal bolts, so that the high requirements of the high-speed railway on settlement and line smoothness are met.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. In the drawings:

FIG. 1 is a schematic diagram of the front view of the present utility model;

FIG. 2 is a section 1-1 of FIG. 1;

FIG. 3 is a schematic side view of the present utility model;

FIG. 4 is a section view taken from 2-2 of FIG. 3;

FIG. 5 is a section 3-3 of FIG. 3;

FIG. 6 is a schematic view of the connection structure of the base plate of the present utility model;

FIG. 7 is a section view of FIG. 6 taken along line 4-4;

FIG. 8-1 is a schematic plan view of the structure of the bottom plate of the present utility model, FIG. 8-2 is a schematic plan view of the first structure of the lower side wall of the present utility model, and FIG. 8-3 is a schematic plan view of the second structure of the lower side wall of the present utility model;

fig. 9 is a section 5-5 of fig. 3.

Reference numerals illustrate:

1. a bottom plate; 11. a bottom plate concave block;

2. a first lower side wall; 21. a second lower side wall; 22. a side wall concave block; 23. vertical ribs of the lower side wall; 24. a lower side wall top plate;

3. an upper side wall I; 31. an upper side wall II; 32. an upper side wall floor; 33. vertical ribs on the upper side wall; 34. side wall tenons;

4. connecting steel plates; 41. a connecting bolt; 42. post-cast strip;

5. side wall bolts; 51. a side wall bolt backing plate; 52. caulking the side wall bolts;

6. a longitudinal bolt; 7. longitudinal prestressed tendons; 8. a tenon bolt; 9. waterproof pad

Detailed Description

It should be noted that, without conflict, the embodiments of the present utility model and features of the embodiments may be combined with each other.

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model will be described in detail below with reference to the drawings in connection with embodiments.

As shown in fig. 1 to 9, a concrete U-shaped roadbed connection structure and a construction method thereof comprise a bottom plate 1, a first lower side wall 2, a second lower side wall 21, a first upper side wall 3, a second upper side wall 31, a connection steel plate 4, a connection bolt 41, a side wall bolt 5, a longitudinal bolt 6, a longitudinal prestressed reinforcement 7 and the like. The bottom plate 1, the first lower side wall 2, the second lower side wall 21, the first upper side wall 3 and the second upper side wall 31 are prefabricated and then transported to the site, the bottom plate 1, the first lower side wall 2 and the second lower side wall 21 are assembled through a connecting steel plate 4 and a connecting bolt 41, the first lower side wall 2, the first upper side wall 3, the second lower side wall 21 and the second upper side wall 31 are assembled through side wall bolts 5 and the like, the second upper side walls 31 and the second lower side walls 21 are assembled through longitudinal bolts 6 and the like, and then the longitudinal prestressed tendons 7 are tensioned among the sections to finish the construction of the connecting structure among the components of the concrete U-shaped roadbed. The adjacent bottom plates 1 are stretched among the sections along the line direction to stretch the longitudinal prestressed tendons 7, so that the bottom plates 1 are extruded together to achieve the connection effect among the bottom plates.

As shown in fig. 3, the bottom plate 1, the first lower side wall 2, the second lower side wall 21, the first upper side wall 3 and the second upper side wall 31 are prefabricated and then transported to the site, and the first lower side wall 2 and the second lower side wall 21 are circularly arranged according to the sequence of the second lower side wall 21, the first lower side wall 2 and the second lower side wall 21.

As shown in fig. 8-1, 8-2 and 8-3, the bottom plate 1 is arranged below the track plate, and the transverse dimension of the bottom plate exceeds the track plate, so that no splice seam is arranged below the track plate, and the deformation integrity of the structure below the track is ensured; the bottom plate 1 is provided with bottom plate concave blocks 11 at four corners and sides, and the bottom plate concave blocks 11 are lower than the bottom plate 1 in the height direction of the top surface and the bottom surface of the bottom plate 1 to form a groove structure.

As shown in fig. 5, the first lower side wall 2 includes a bottom horizontal plate and a side vertical plate, the bottom horizontal plate is opposite to the bottom plate 1, a side wall concave block 22 is disposed on the first lower side wall 2 corresponding to the bottom plate concave block 11, and a lower side wall top plate 24 is disposed on the top of the first lower side wall 2; the lower side wall II 21 comprises a bottom horizontal plate and a side vertical plate, the bottom horizontal plate is opposite to the bottom plate 1, a side wall concave block 22 is arranged on the lower side wall II 21 corresponding to the position of the bottom plate concave block 11, a lower side wall top plate 24 is arranged on the top of the lower side wall II 21, a lower side wall vertical rib 23 is arranged on the side of the lower side wall II 21, and the lower side wall vertical rib 23 is connected with the lower side wall top plate 24 and the bottom horizontal plate to form a whole.

As shown in fig. 4, an upper sidewall bottom plate 32 is provided at the bottom of the upper sidewall 3; an upper side wall bottom plate 32 is arranged at the bottom of the upper side wall II 31, an upper side wall vertical rib 33 is arranged on the side surface of the upper side wall II 31, and the upper side wall vertical rib 33 and the upper side wall bottom plate 32 are mutually connected to form a whole.

As shown in fig. 6, a connection steel plate 4 is arranged at the top and bottom between the bottom plate concave block 11 and the side wall concave block 22, bolt holes are arranged on the connection steel plate 4, a connection bolt 41 penetrates into the bolt holes, the upper and lower connection steel plates 4 are installed by fixing the connection bolt 41, a post-pouring strip 42 is arranged between the bottom plate concave block 11 and the side wall concave block 22, and the connection steel plate 4 and the connection bolt 41 are sealed by concrete or mortar.

As shown in fig. 1, bolt holes are provided in the lower side wall top plate 24 and the upper side wall bottom plate 32, the lower side wall top plate 24 and the upper side wall bottom plate 32 are connected by side wall bolts 5, the side wall bolts 5 are penetrated during assembly, side wall bolt backing plates 51 are mounted, and the side wall bolts 5 are screwed to connect the two.

Or the side wall bolts 5 are pre-embedded in the lower side wall top plate 24, when the side wall bolts 5 are assembled, the side wall bolts 5 are penetrated into the bolt holes of the upper side wall bottom plate 32, and the side wall bolts are fixed and then are used for constructing side wall bolt joint filling 52, so that the connection between the two is completed.

As shown in fig. 3, the upper side wall vertical ribs 33 and the lower side wall vertical ribs 23 are respectively provided with a plurality of bolt holes, and after the adjacent upper side wall vertical ribs 33 or lower side wall vertical ribs 23 are spliced, the longitudinal bolts 6 penetrate through the bolt holes to fix, so that the splicing between the upper side wall vertical ribs 33 and the splicing between the lower side wall vertical ribs 23 is realized.

As shown in fig. 3, the longitudinal tendons 7 are disposed between the bottom plate 1, the first lower side wall 2, the second lower side wall 21, the first upper side wall 3, and the second upper side wall 31, and are stretched and anchored in the longitudinal direction.

As shown in fig. 9, in another embodiment, the upper side wall 3 is provided with upper side wall tenons 34, tenons 34 of two adjacent upper side walls 3 are correspondingly arranged, and when the upper side walls 3 are assembled, mutual alignment ensures that the upper side walls 3 are stressed cooperatively through the side wall tenons 34, so that the integrity of the upper side walls 3 is enhanced; a waterproof pad 9 is arranged in the middle of the side wall tenons 34 to prevent water flow from entering the inner side from the outer side of the upper side wall I3, and meanwhile, the waterproof performance of the splice joint can be enhanced due to the nonlinear joint between the side wall tenons 34; the side wall tenons 34 are provided with the tenons 8, after the side wall tenons 34 are assembled, the side wall tenons 34 are connected through the tenons 8, and the tenons 8 can be used for enhancing the connection performance and the shearing resistance of the side wall tenons 34 on one hand and can be used for compacting the waterproof pad 9 on the other hand, so that the waterproof capability is enhanced.

A construction method of a concrete U-shaped roadbed connection structure comprises the following steps:

step one, a bottom plate 1, a lower side wall I2, a lower side wall II 21, an upper side wall I3 and an upper side wall II 31 are transported to the site after the factory prefabrication processing is completed.

And step two, assembling and connecting the bottom plate 1 and the lower side wall 1 of each ring longitudinally through the connecting steel plate 4, and connecting the lower side wall 2 and the upper side wall 3 of each ring through the side wall bolts 5.

And thirdly, splicing and connecting the bottom plate 1 and the lower side wall II 21 of each ring longitudinally through the connecting steel plates 4, and connecting the lower side wall II 21 and the upper side wall II 31 of each ring through the side wall bolts 5.

And fourthly, dragging or sliding each ring to the design position along the longitudinal direction, and connecting the upper side wall vertical ribs 33 and the lower side wall vertical ribs 23 with each other through the longitudinal bolts 6.

And fifthly, stretching and anchoring the longitudinal prestressed tendons 7, and longitudinally connecting all the components to finish the construction of the concrete U-shaped roadbed connecting structure.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.

Claims (9)

1. A concrete U-shaped roadbed connection structure is characterized in that: the concrete U-shaped roadbed connecting structure comprises a plurality of bottom plates, a plurality of lower side walls I, a plurality of lower side walls II, a plurality of upper side walls I and a plurality of upper side walls II, wherein the bottom plates, the lower side walls I, the lower side walls II, the upper side walls I and the upper side walls II are all prefabricated and transported to the site after being processed, the bottom plates, the lower side walls I and the lower side walls II are assembled, the lower side walls I, the upper side walls I, the lower side walls II and the upper side walls II are assembled, and the upper side walls II and the lower side walls II are assembled with each other to form the concrete U-shaped roadbed connecting structure.

2. The concrete U-shaped roadbed connecting structure according to claim 1, wherein: the longitudinal prestressed tendons are arranged among the bottom plate, the first lower side wall, the second lower side wall, the first upper side wall and the second upper side wall, and are tensioned and anchored longitudinally.

3. The concrete U-shaped roadbed connecting structure according to claim 1, wherein: the bottom plate sets up in track board below, the transverse dimension of bottom plate is greater than the track board, the bottom plate sets up the bottom plate concave block in four corners and side, the bottom plate concave block is lower than the bottom plate in bottom plate top surface, bottom surface direction of height, forms groove structure.

4. A concrete U-shaped roadbed connection structure according to claim 1 or 2, wherein: the first lower side wall comprises a bottom horizontal plate and a side vertical plate, the bottom horizontal plate is opposite to the bottom plate, side wall concave blocks are arranged on the first lower side wall at positions opposite to the bottom plate concave blocks, and a first lower side wall top plate is arranged on the top of the first lower side wall; the second side wall comprises a bottom horizontal plate and a side vertical plate, the bottom horizontal plate is opposite to the bottom plate, side wall concave blocks are arranged at the positions, opposite to the bottom plate concave blocks, of the second side wall, a second side wall top plate is arranged at the top of the second side wall, a second side wall vertical rib is arranged on the side face of the second side wall, and the second side wall vertical rib, the second side wall top plate and the bottom horizontal plate are connected with each other to form a whole.

5. The concrete U-shaped roadbed connecting structure according to claim 4, wherein: an upper side wall bottom plate is arranged at the bottom of the first upper side wall; the bottom of the second upper side wall is provided with an upper side wall bottom plate, the side surface of the second upper side wall is provided with an upper side wall vertical rib, and the upper side wall vertical rib and the upper side wall bottom plate are connected with each other to form a whole.

6. The concrete U-shaped roadbed connecting structure according to claim 5, wherein: the top and the bottom between the bottom plate concave block and the side wall concave block are respectively provided with a connecting steel plate, the bottom plate concave block and the side wall concave block are respectively provided with a bolt hole, the connecting steel plates are respectively provided with a bolt hole, connecting bolts penetrate into the bolt holes, the upper connecting steel plates and the lower connecting steel plates are installed through the fixed connecting bolts, a post-pouring belt is applied between the bottom plate concave block and the side wall concave block, and the connecting steel plates and the connecting bolts are sealed through concrete or mortar.

7. The concrete U-shaped roadbed connecting structure according to claim 5, wherein: bolt holes are formed in the lower side wall top plate and the upper side wall bottom plate, side wall bolts penetrate through the lower side wall top plate and the upper side wall bottom plate during assembly, side wall bolt base plates are installed again, and the side wall bolts are screwed for connection between the lower side wall top plate and the upper side wall bottom plate.

8. The concrete U-shaped roadbed connecting structure according to claim 5, wherein: and a plurality of bolt holes are formed in the upper side wall vertical ribs and the lower side wall vertical ribs, and after the adjacent upper side wall vertical ribs/lower side wall vertical ribs are spliced, longitudinal bolts penetrate through the bolt holes to fix the upper side wall vertical ribs and the lower side wall vertical ribs, so that the splicing between the upper side wall vertical ribs and the lower side wall vertical ribs is realized.

9. The concrete U-shaped roadbed connecting structure according to claim 1, wherein: the first upper side walls are provided with upper side wall tenons, tenons of two adjacent first upper side walls are correspondingly arranged, the adjacent first upper side walls are mutually aligned when assembled, the mutual stress of the two first upper side walls is ensured through the side wall tenons, and the integrity of the first upper side walls is enhanced; the middle position is equipped with waterproof pad on the side wall tenon, be equipped with the tenon bolt on the side wall tenon, after the side wall tenon is assembled, pass through tenon bolted connection with the side wall tenon.