CN217419350U

CN217419350U - Pier beam prestressed body external temporary consolidation construction structure

Info

Publication number: CN217419350U
Application number: CN202221308716.4U
Authority: CN
Inventors: 李志劲; 陈秋活; 谈林康; 陈伟鹏; 敖晓专
Original assignee: Guangzhou Xingfan Construction Engineering Co ltd; Guangzhou No2 Municipal Engineering Co ltd
Current assignee: Guangzhou Xingfan Construction Engineering Co ltd; Guangzhou No2 Municipal Engineering Co ltd
Priority date: 2022-05-26
Filing date: 2022-05-26
Publication date: 2022-09-13
Anticipated expiration: 2032-05-26

Abstract

The utility model relates to a pier roof beam prestressed body concreties construction structures temporarily outward, including main mound, case roof beam, a plurality of stay tube and connecting reinforcement, main mound includes the pier shaft, and the below of pier shaft is equipped with the cushion cap. The box girder sets up in the top of pier shaft, and the box girder includes bottom plate and roof. The bottom of the supporting tube is fixedly connected with the bearing platform, and the top of the supporting tube is fixedly connected with the bottom plate. The supporting tube is internally provided with a hollow cavity for pouring concrete, and the upper end of the supporting tube is also provided with a grouting hole for pouring concrete. One end of the connecting steel bar is inserted into the concrete in the supporting pipe and fixed, and the other end of the connecting steel bar penetrates through the bottom plate and the top plate. The utility model discloses a pier roof beam prestressing force external temporary consolidation construction structures can make external consolidation structure can bear the pressure and the pulling force that unbalanced bending moment produced in the work progress, improves factor of safety. And moreover, the roof of the box girder is supported, so that the roof is prevented from being extruded by the applied prestress, and the danger of the roof collapsing due to compression is avoided.

Description

Pier beam prestressed body external temporary consolidation construction structure

Technical Field

The utility model relates to a pier roof beam temporary consolidation structure construction technical field especially relates to a pier roof beam prestressed body concreties construction structures temporarily outward.

Background

In the civil engineering industry, in the implementation process of a prestressed concrete box girder bridge fixedly connected with a non-pier bridge, when a No. 0 box girder is required to be constructed, a temporary support is arranged before the side span and the mid span are folded to temporarily solidify the pier and the girder, after the side span is folded, the temporary support is removed, a bridge main body is located behind the permanent support (the part of the temporary support is stressed), the stress system conversion of the structure is completed, and finally the mid span is folded.

In traditional construction, the support structure of concrete temporarily often produces the deformation because of bearing pressure and the pulling force that unbalanced bending moment produced in the work progress, leads to that construction safety can't obtain the guarantee. Moreover, the traditional temporary consolidation structure has a small supporting effect on the top plate of the box girder, and the prestress applied in the construction process extrudes the top plate, so that the top plate is easy to crush.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above problems, it is necessary to provide an external temporary consolidation construction structure for pier beam prestressing, which can enable the external consolidation structure to bear the pressure and tension generated by unbalanced bending moment in the construction process, increase the consolidation rigidity, and improve the safety factor. And moreover, the roof of the box girder is supported, so that the roof is prevented from being extruded by the applied prestress, and the danger of the roof collapsing due to compression is avoided.

The technical scheme is as follows:

on the one hand, provide an external temporary consolidation construction structures of mound roof beam prestressing force, include:

the main pier comprises a pier body, and a bearing platform is arranged below the pier body;

the box girder is arranged above the pier body and comprises a bottom plate and a top plate;

the bottom of each supporting tube is fixedly connected with the bearing platform, and the top of each supporting tube is fixedly connected with the bottom plate; a cavity for pouring concrete is arranged in the supporting pipe in a hollow manner;

and one end of the connecting steel bar is inserted into the concrete in the supporting pipe to be fixed, and the other end of the connecting steel bar penetrates through the bottom plate and the top plate.

The technical solution is further explained as follows:

in one embodiment, the upper part of the supporting tube is fixedly provided with a connecting anchor plate, and the connecting anchor plate is fixedly connected with the connecting reinforcing steel bar.

In one embodiment, the connection anchor plate is provided with a plurality of through holes for the connection steel bars to pass through, and one end of each connection steel bar passes through the through holes and is fixedly connected with the connection anchor plate through a fastener.

In one embodiment, an intermediate wall is connected between the bottom plate and the top plate.

In one embodiment, the connection bars are disposed inside the intermediate wall.

In one embodiment, the bottom of the intermediate wall is provided with a support column penetrating through the bottom plate, and the support column is inserted and arranged in the support pipe.

In one embodiment, the supporting tube is provided with a bracket inclined strut for supporting a bracket of the box girder.

In one embodiment, a plurality of fixed steel bars are pre-embedded on the bearing platform, one ends of the fixed steel bars are pre-embedded in the bearing platform, and the other ends of the fixed steel bars are fixedly connected with the bottom of the supporting tube.

In one embodiment, the support pipes and the pier body are fixedly connected through I-shaped steel wall connecting pieces.

In one embodiment, the support structure further comprises a support member, wherein the support member is arranged between the top of the pier body and the bottom plate, the support member comprises a permanent support and a temporary support, the permanent support is arranged in the middle of the pier body, and the temporary support is arranged around the permanent support.

The utility model has the advantages that:

compared with the prior art, the utility model discloses an external interim consolidation construction structures of mound roof beam prestressing force, through setting up a plurality of stay tubes, be connected the bottom of stay tube with the cushion cap of main mound, the stay tube upper end is connected with the bottom plate of case roof beam, plays the effect of an interim support. Meanwhile, the support pipes are arranged in a hollow mode, concrete is poured in the cavities of the support pipes, the connecting steel bars are pre-buried in the concrete, the other ends of the connecting steel bars penetrate through the bottom plate and the top plate of the box girder, the support pipes and the box girder are connected to form a whole, the resistance capacity of the whole bridge consolidation structure to unbalanced bending moment is effectively enhanced, and construction safety is improved. Furthermore, the connecting steel bars directly penetrate through the bottom plate and the top plate of the box girder, the top plate of the box girder is supported to a certain extent, the top plate is prevented from being extruded by applied prestress, and the danger that the top plate is crushed and collapsed is avoided.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this application, are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification.

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained without creative efforts.

FIG. 1 is a schematic structural diagram of a pier beam prestressed external temporary consolidation construction structure in one embodiment;

FIG. 2 is a schematic structural diagram of another perspective view of a pier beam prestressed external temporary consolidation construction structure in one embodiment;

FIG. 3 is a schematic cross-sectional view of I-I in FIG. 1;

FIG. 4 is a schematic cross-sectional view of II-II in FIG. 1;

FIG. 5 is a schematic structural view of the connecting anchor plate;

fig. 6 is a structural schematic view of the support member.

Description of the reference numerals:

110. a pier body; 120. a bearing platform; 200. a box girder; 210. a base plate; 220. a top plate; 230. an intermediate wall; 231. a pillar; 300. supporting a pipe; 310. concrete; 320. grouting holes; 330. connecting an anchor plate; 331. a through hole; 400. connecting reinforcing steel bars; 500. a bracket diagonal brace; 600. fixing the steel bars; 700. i-shaped steel wall connecting pieces; 800. a support member; 810. a permanent support; 820. a temporary support; 821. a concrete block; 822. sulfur mortar; 830. and (7) supporting a cushion stone.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

As shown in fig. 1 to 6, in one embodiment, a pier girder prestressed external temporary consolidation construction structure is provided, which includes a main pier, a box girder 200, a plurality of support pipes 300, and a connection bar 400, wherein the main pier includes a pier body 110, and a bearing platform 120 is disposed below the pier body 110. A box girder 200 is disposed above the pier body 110, and the box girder 200 includes a bottom plate 210 and a top plate 220. The bottom of the support tube 300 is fixedly connected to the platform 120, and the top of the support tube 300 is fixedly connected to the bottom plate 210. A cavity for pouring concrete 310 is arranged in the support tube 300 in a hollow manner, and a grouting hole 320 for pouring the concrete 310 is further arranged at the upper end of the support tube 300. One end of the connection bar 400 is inserted into the concrete 310 in the support pipe 300 and fixed, and the other end of the connection bar 400 is disposed to penetrate the bottom plate 210 and the top plate 220.

In this embodiment, the support pipes 300 are provided, the bottoms of the support pipes 300 are connected to the cap 120 of the main pier, and the upper ends of the support pipes 300 are connected to the bottom plate 210 of the box girder 200, thereby functioning as a temporary support 810. Meanwhile, the support pipe 300 is arranged in a hollow manner, concrete 310 is poured in the cavity of the support pipe 300, the connecting steel bar 400 is pre-buried in the concrete 310, and the other end of the connecting steel bar 400 penetrates through the bottom plate 210 and the top plate 220 of the box girder 200, so that the support pipe 300 and the box girder 200 are connected to form a whole, the resistance of the whole bridge consolidation structure to unbalanced bending moment is effectively enhanced, and the construction safety is improved. Further, the connecting steel bar 400 directly penetrates through the bottom plate 210 and the top plate 220 of the box girder 200, so that the top plate 220 of the box girder 200 is supported to a certain extent, the top plate 220 is prevented from being extruded by applied prestress, and the danger of the top plate 220 collapsing due to compression is avoided.

Further, in actual operation, in the process of binding the steel bars of the box girder 200, the connecting steel bars 400 exposed out of the top plate 220 are tensioned, aligned and applied with a certain downward pressure, so that the resistance of the box girder 200 to unbalanced bending moment can be further enhanced, and the stability of the whole structure is ensured.

In one embodiment, the upper portion of the support tube 300 is fixedly provided with a connection anchor plate 330, and the connection anchor plate 330 is fixedly connected with the connection steel bar 400. Specifically, the edge of the connection anchor plate 330 is welded and fixed to the inner wall of the support tube 300, the connection steel bar 400 is fixedly connected with the connection anchor plate 330 through welding or a fastener, and the connection anchor plate 330 is arranged, so that the connection strength between the connection steel bar 400 and the support tube 300 is enhanced, and the stability of the whole structure is ensured.

Furthermore, the connection anchor plate 330 is provided with a plurality of through holes 331 for the connection steel bars 400 to pass through, and one end of the connection steel bars 400 passes through the through holes 331 and is fixedly connected with the connection anchor plate 330 through fasteners. In actual operation, the connection steel bar 400 is finish-rolled deformed steel bar, which can ensure the connection strength. And, after connecting anchor slab 330 was passed to the one end of connecting reinforcement 400, adopt the nut with the spacing fixed connection of connecting reinforcement 400 on connecting anchor slab 330, the stability of being connected between connecting reinforcement 400 and the stay tube 300 can be guaranteed to a very large extent to the rethread pouring concrete 310 in the stay tube 300.

In one embodiment, an intermediate wall 230 is connected between the bottom plate 210 and the top plate 220, and the intermediate wall 230 can further support the top plate 220. Further, the connection reinforcing bars 400 are disposed inside the intermediate wall 230, and the connection reinforcing bars 400 can be effectively wrapped inside the intermediate wall 230, thereby protecting the connection reinforcing bars 400. Meanwhile, the connection bars 400 are disposed inside the intermediate wall 230, which also enhances the strength of the intermediate wall 230, and further ensures the stability of the top plate 220 supported by the intermediate wall 230.

Furthermore, the bottom of the intermediate wall 230 is provided with the support column 231 penetrating through the bottom plate 210, and the support column 231 is inserted into the support tube 300, so that the connection strength among the intermediate wall 230, the connection steel bar 400 and the support tube 300 can be effectively increased, the support strength of the support tube 300 to the box girder 200 is enhanced, and the stability of the whole structure is ensured.

In one embodiment, the support tube 300 is provided with a corbel brace 500 for supporting a bracket of the box girder 200. Before the box girder 200 is constructed, the bracket needs to be erected and the formwork needs to be installed, and the bracket erecting stability and the formwork installing construction safety are ensured by arranging the bracket inclined strut 500 on the supporting pipe 300.

In one embodiment, a plurality of fixing steel bars 600 are pre-embedded on the bearing platform 120, one end of each fixing steel bar 600 is pre-embedded in the bearing platform 120, and the other end of each fixing steel bar 600 is fixedly connected with the bottom of the support tube 300. Further, a plurality of fixing steel bars 600 are arranged along the edge of the support tube 300 by full welding to ensure the stable connection between the bottom of the support tube 300 and the bearing platform 120. Furthermore, during the actual operation, a flange may be disposed between the support tube 300 and the platform 120, and the flange may further increase the stability of the connection between the support tube 300 and the platform 120.

In one embodiment, the support pipes 300 and the pier body 110 are connected and fixed through the h-shaped steel wall connecting member 700. Through I-steel wall connecting piece 700, it is guaranteed that connection between a plurality of supporting pipes 300 and between supporting pipes 300 and pier body 110 is stable, so that stability of the whole structure is guaranteed, and safety of whole construction is guaranteed.

In one embodiment, support member 800 is further included, support member 800 being disposed between the top of pier body 110 and base plate 210, support member 800 including permanent mount 810 and temporary mount 820, permanent mount 810 being disposed in the middle of pier body 110, and temporary mount 820 being disposed around permanent mount 810. Specifically, a support cushion 830 is arranged between the permanent support 810 and the top of the pier body 110, so that the impact force between the pier body 110 and the permanent support 810 and between the pier body and the box girder 200 is reduced. The temporary support 820 comprises a concrete block 821 and sulfur mortar 822, wherein the concrete block 821 is arranged above the sulfur mortar 822, and the temporary support function can be achieved for the box girder 200 through the structures of the concrete block 821 and the sulfur mortar 822, and meanwhile, the overlarge impact force between the box girder 200 and the pier body 110 can be avoided. In addition, when the temporary fixing is removed, the structure of the concrete block 821 and the sulfur mortar 822 is only required to be removed for removing the temporary support 820, and the structure is easily removed without damaging the pier body 110 and the box girder 200 after the removal.

The above examples only represent some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. The utility model provides an external temporary consolidation construction structure of pier roof beam prestressing force, its characterized in that includes:

the main pier comprises a pier body (110), and a bearing platform (120) is arranged below the pier body (110);

the box girder (200), the box girder (200) is arranged above the pier body (110), and the box girder (200) comprises a bottom plate (210) and a top plate (220);

the bottom of each supporting pipe (300) is fixedly connected with the bearing platform (120), and the top of each supporting pipe (300) is fixedly connected with the bottom plate (210); a cavity for pouring concrete (310) is arranged in the support tube (300) in a hollow mode;

one end of the connecting steel bar (400) is inserted into the concrete (310) in the support pipe (300) and fixed, and the other end of the connecting steel bar (400) penetrates through the bottom plate (210) and the top plate (220) to be arranged.

2. The pier beam prestressed external temporary consolidation construction structure of claim 1, wherein a connection anchor plate (330) is fixedly arranged at the upper part of the support pipe (300), and the connection anchor plate (330) is fixedly connected with the connection steel bar (400).

3. The pier beam prestressed external temporary consolidation construction structure of claim 2, wherein a plurality of through holes (331) for the connection reinforcing steel bars (400) to pass through are formed in the connection anchor plate (330), and one end of each connection reinforcing steel bar (400) passes through the through hole (331) and is fixedly connected with the connection anchor plate (330) through a fastener.

4. The pier girder prestressed external temporary consolidation construction structure according to claim 1, wherein an intermediate wall (230) is connected between the bottom plate (210) and the top plate (220).

5. The pier girder prestressed external temporary consolidation construction structure according to claim 4, wherein the connection reinforcing bars (400) are provided inside the intermediate wall (230).

6. The pier beam prestressed external temporary consolidation construction structure according to claim 4, wherein a support column (231) penetrating the bottom plate (210) is provided at the bottom of the intermediate wall (230), and the support column (231) is inserted into the support tube (300).

7. The pier beam prestressed external temporary consolidation construction structure according to claim 1, wherein a bracket diagonal brace (500) for supporting a bracket of the box beam (200) is provided on the support tube (300).

8. The pier beam prestressed external temporary consolidation construction structure of claim 1, wherein a plurality of fixing steel bars (600) are pre-embedded on the bearing platform (120), one end of each fixing steel bar (600) is pre-embedded in the bearing platform (120), and the other end of each fixing steel bar is fixedly connected with the bottom of the support pipe (300).

9. The pier beam prestressed external temporary consolidation construction structure of claim 1, wherein a plurality of the support pipes (300) and the pier body (110) are connected and fixed through I-steel wall connecting members (700).

10. The pier beam prestressed external temporary consolidation construction structure of claim 1, further comprising a support member (800), wherein the support member (800) is disposed between the top of the pier body (110) and the bottom plate (210), the support member (800) comprises a permanent support (810) and a temporary support (820), the permanent support (810) is disposed at the middle of the pier body (110), and the temporary support (820) is disposed around the permanent support (810).