CN216194047U

CN216194047U - Structure is assembled to few support of prefabricated segment roof beam side span

Info

Publication number: CN216194047U
Application number: CN202121741224.XU
Authority: CN
Inventors: 杨彪; 程永志; 巨高权; 高岗; 任忠生; 聂记良; 唐忠伟; 王蓬勃; 张波波; 杨涛
Original assignee: CCCC SHEC Third Highway Engineering Co Ltd
Current assignee: CCCC SHEC Third Highway Engineering Co Ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-04-05
Anticipated expiration: 2031-07-29

Abstract

The utility model provides a prefabricated section beam side span less support assembling structure which comprises a triangular bracket arranged on a transition pier, a bracket opposite-pulling system for fastening and fixing the triangular bracket, a beam lower cushion block arranged on the transition pier, two side span 0# beam sections arranged on the beam lower cushion block, an inter-beam cushion block arranged between the two side span 0# beam sections, a temporary opposite-pulling system for fixing the side span 0# beam sections, a plurality of side span beam sections assembled in sequence next to the side span 0# beam sections, and temporary prestress bundles arranged on the side span beam sections, wherein the triangular bracket is fixed on the transition pier below the side span beam sections through the bracket opposite-pulling system. The utility model realizes the side span construction of the prefabricated section beam, reduces the use of the bracket, does not strengthen the bridge girder erection machine, greatly reduces the dependence on the geological condition under the bridge, increases the use range, can disassemble and turn over the adopted materials for practical use, improves the construction efficiency and reduces the construction cost.

Description

Structure is assembled to few support of prefabricated segment roof beam side span

Technical Field

The utility model belongs to the technical field of bridge construction, and particularly relates to a prefabricated segmental beam side span less support assembling structure.

Background

The prefabricated section beam side span box beam assembly is generally assembled by a support method or a bridge girder erection machine suspension method, and both have certain defects. When the support method is adopted for assembly, a construction support needs to be installed, the installation and the removal of the construction support consume more materials and time, the construction site needs to be leveled before the installation of the support, the requirement on the geological condition under the bridge is high, and the application range is narrow; the main truss of the bridge girder erection machine needs to be reinforced by adopting the suspension method of the bridge girder erection machine, so that the construction cost is greatly improved.

SUMMERY OF THE UTILITY MODEL

The utility model provides a prefabricated section beam side span less support assembly structure, which greatly reduces the dependence on the geological condition under a bridge without reinforcing a bridge girder erection machine, and simultaneously adopts materials which can be recycled, thereby improving the construction efficiency and reducing the construction cost.

The technical scheme of the utility model is as follows: the utility model provides a structure is assembled to few support of prefabricated segment roof beam sidespan, including setting up the triangular bracket on the transition mound, the bracket that fastens fixedly is carried out triangular bracket to drawing the system, the setting is at the under-beam cushion on the transition mound, set up two sidespan 0# roof beam sections on the under-beam cushion, set up the inter-beam cushion between two sidespan 0# roof beam sections, the opposite side is striden 0# roof beam section and is carried out the interim system of drawing that fixes, a plurality of sidespan roof beam sections, the interim prestressing tendons of setting on a plurality of sidespan roof beam sections, the triangular bracket is fixed on the transition mound of sidespan roof beam section below through the bracket system of drawing.

Preferably, the triangular bracket comprises a main cross beam arranged along the extension direction of the side span beam section, a main longitudinal beam perpendicular to the main cross beam direction, and an inclined strut arranged between the main cross beam and the main longitudinal beam, and the main longitudinal beam and the main cross beam are fastened and fixed through a bracket opposite-pulling system.

Preferably, the inclined strut is respectively connected with the main longitudinal beam and the main cross beam through bolts.

Preferably, the bracket opposite-pulling system comprises a bracket opposite-pulling rod and a bracket opposite-pulling nut, and the bracket opposite-pulling rod penetrates through the transition pier and is fixed with the main longitudinal beam or the main cross beam through the bracket opposite-pulling nut respectively.

Preferably, the inter-beam pad is provided with a plurality of through holes.

Preferably, the temporary counter-pulling system comprises a temporary counter-pulling rod, a base plate and a nut, wherein the temporary counter-pulling rod penetrates through a through hole of the inter-beam cushion block, the side span 0# beam section and the base plate on two sides, and is fixed through the nut, so that temporary counter-pulling fastening of the side span 0# beam section is realized.

The specific construction method comprises the following steps:

step one, mounting a transition pier, a triangular bracket, a bracket opposite-pulling system, a pier top side span 0# beam section and an inter-beam cushion block on the transition pier, and mounting a temporary opposite-pulling system on the opposite side span 0# beam section for temporary opposite-pulling fastening;

step two, symmetrically installing side span No. 1 beam sections at two ends of the side span No. 0 beam section by using a bridge girder erection machine, constructing anchoring temporary prestressed bundles LmS1 on the side span No. 1 beam section, and tensioning and locking the anchoring temporary prestressed bundles LmS 1;

step three, repeating the steps until the symmetrical installation of the side span 7# beam section is completed;

and fourthly, constructing the next span section beam, constructing the permanent prestress of the side span, removing the temporary prestress beams LmS1-LmS7 and the temporary counter-pulling system, the triangular bracket and the bracket counter-pulling system of the pier top side span No. 0 beam section, and repeating the steps until the construction is finished when the temporary prestress beams, the triangular bracket and the bracket counter-pulling system are turned to the next transition pier.

The utility model has the advantages that: according to the utility model, the triangular bracket, the bracket opposite-pulling system and the transitional side span 0# beam section are arranged on the transitional pier and are oppositely pulled and fastened through the temporary opposite-pulling system, so that the side span construction of the prefabricated section beam is realized, the use of the bracket is reduced, a bridge girder erection machine is not reinforced, the dependence on the geological condition under the bridge is greatly reduced, the use range is enlarged, the adopted materials can be detached, turned over and practical, the construction efficiency is improved, and the construction cost is reduced.

Drawings

FIG. 1 is a schematic structural diagram of a prefabricated section girder side span less support assembly structure of the present invention;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic construction flow diagram of a prefabricated section beam side span less support assembly structure, wherein 3(a) is a schematic step one, 3(b) is a schematic step two, 3(c) is a schematic step three, and 3(d) is a schematic step four;

wherein: 1. the novel side span structure comprises side span 0# beam sections, 2, inter-beam cushion blocks, 3, a temporary counter-pulling system, 31, a temporary counter-pulling rod, 32, a cushion plate, 33, nuts, 4, side span 1# beam sections, 5, side span 2# beam sections, 6, side span 3# beam sections, 7, side span 4# beam sections, 8, side span 5# beam sections, 9, side span 6# beam sections, 10, side span 7# beam sections, 11, a temporary pre-stressed beam, 12, an underbeam cushion block, 13, a triangular bracket, 131, a main cross beam, 132, a diagonal brace, 133, a main longitudinal beam, 14, a bracket counter-pulling system, 141, a bracket counter-pulling rod, 142 and a bracket counter-pulling nut.

Detailed Description

The present invention will now be described more fully hereinafter with reference to the accompanying drawings, in which a person skilled in the art can, without any creative effort, fully implement the present invention.

Referring to fig. 1-2, a prefabricated segment girder side-span less-support assembling structure is provided, which includes a triangular bracket 13 arranged on a transition pier, a bracket opposite-pulling system 14 for fastening and fixing the triangular bracket 13, a girder lower cushion block 12 arranged on the transition pier, two side-span 0# girder sections 1 arranged on the girder lower cushion block 12, an inter-girder cushion block 2 arranged between the two side-span 0# girder sections 1, a temporary opposite-pulling system 3 for fixing the side-span 0# girder sections 1, a plurality of side-span girder sections sequentially assembled next to the side-span 0# girder sections 1, and temporary prestressed tendons 11 arranged on the side-span girder sections, wherein the triangular bracket 13 is fixed on the transition pier below the side-span girder sections through the bracket opposite-pulling system 14.

Further, the triangular bracket 13 comprises a main cross beam 131 arranged along the extension direction of the side span beam section, a main longitudinal beam 133 perpendicular to the direction of the main cross beam 131, and a diagonal brace 132 arranged between the main cross beam 131 and the main longitudinal beam 133, wherein the main longitudinal beam 133 and the main cross beam 131 are fastened and fixed through the bracket opposite-pulling system 14.

Further, the diagonal brace 132 is respectively connected with the main longitudinal beam 133 and the main transverse beam 131 through bolts, so that the installation and the disassembly are convenient, and the diagonal brace can be used on the next transition pier.

Further, the bracket opposite-pulling system 14 comprises a bracket opposite-pulling rod 141 and a bracket opposite-pulling nut 142, wherein the bracket opposite-pulling rod 141 penetrates through the transition pier and is fixed with the main longitudinal beam or the main cross beam through the bracket opposite-pulling nut respectively.

Further, the inter-beam pad 2 is provided with a plurality of through holes.

The temporary counter-pulling system 3 further comprises a temporary counter-pulling rod 31, a backing plate 32 and a nut 33, wherein the temporary counter-pulling rod 31 penetrates through a through hole of the inter-beam cushion block 2, the side span 0# beam section 1 on two sides and the backing plate 32 and is fixed through the nut 33, so that temporary counter-pulling fastening of the side span 0# beam section 1 is realized.

The specific construction method of the utility model is as follows:

firstly, mounting a transition pier, a triangular bracket 13, a bracket opposite-pulling system 14, a pier top side span 0# beam section 1 and an inter-beam cushion block 2 on the transition pier, and mounting a temporary opposite-pulling system 3 on the side span 0# beam section 1 for temporary opposite-pulling fastening;

step two, symmetrically installing side span 1# beam sections 4 at two ends of the side span 0# beam section 1 by using a bridge girder erection machine, constructing anchoring temporary prestressed bundles LmS1 on the side span 1# beam sections 4, and tensioning and locking the anchoring temporary prestressed bundles;

thirdly, repeating the steps, and sequentially installing the side span 3# beam section 6, the side span 4# beam section 7, the side span 5# beam section 8, the side span 6# beam section 9 and the side span 7# beam section 10, and the temporary prestressed beams LmS2, LmS3, LmS4, LmS5, LmS6 and LmS7 which correspond to the side span 6# beam section and the side span 7# beam section in sequence until the side span 7# beam section 10 is symmetrically installed;

and fourthly, constructing the next span section beam, constructing the permanent prestress of the side span, sequentially removing the temporary prestress tendons 11LmS1, LmS2, LmS3, LmS4, LmS5, LmS6 and LmS7 and the temporary counter-pulling system 3, the triangular bracket 13 and the bracket counter-pulling system 14 of the 0# beam section 1 of the pier top span, and repeating the steps until the construction is finished when the pier top span section beam is rotated to the next transition pier.

While the preferred embodiments of the utility model have been described, it is to be understood that the utility model is not limited to the precise embodiments described, and that equipment and structures not described in detail are understood to be practiced as commonly known in the art; any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention by those skilled in the art can be made without departing from the technical scope of the present invention, and still fall within the protection scope of the technical solution of the present invention.

Claims

1. The utility model provides a few support of prefabricated segment roof beam sidespan assembles structure which characterized in that, including setting up the triangular bracket on the transition mound, the bracket that fastens the fixing is carried out to the triangular bracket draws the system to drawing, set up the under-beam cushion on the transition mound, set up two sidespan 0# beam sections on the under-beam cushion, set up the inter-beam cushion between two sidespan 0# beam sections, the opposite side is striden 0# beam section and is carried out the interim system that draws that fixes, a plurality of sidespan beam sections that adjacent sidespan 0# beam section was assembled in proper order, the interim prestressing tendons of setting on a plurality of sidespan beam sections, the triangular bracket is fixed on the transition mound of sidespan beam section below through the bracket draws the system to drawing.

2. The prefabricated section beam side span less-bracket assembly structure as claimed in claim 1, wherein the triangular bracket comprises a main cross beam arranged along the extension direction of the side span beam section, a main longitudinal beam perpendicular to the direction of the main cross beam, and a diagonal brace arranged between the main cross beam and the main longitudinal beam, and the main cross beam are fastened and fixed through a bracket opposite-pulling system.

3. The precast segmental beam edge-span less-bracket assembly structure as claimed in claim 2, wherein the diagonal brace is respectively connected with the main longitudinal beam and the main transverse beam through bolts.

4. The prefabricated section beam edge-span less-support assembling structure of claim 3, wherein the bracket counter-pulling system comprises a bracket counter-pulling rod and a bracket counter-pulling nut, and the bracket counter-pulling rod penetrates through the transition pier to be fixed with the main longitudinal beam or the main cross beam through the bracket counter-pulling nut respectively.

5. The precast segmental beam edge-span less support assembly structure as claimed in claim 4, wherein a plurality of through holes are formed in the inter-beam spacer.

6. The splicing structure of the precast segmental beam with few side spans and the bracket as claimed in claim 5, wherein the temporary counter-pulling system comprises a temporary counter-pulling rod, a backing plate and a nut, the temporary counter-pulling rod penetrates through a through hole of the inter-beam spacer, the side span 0# beam section and the backing plate on two sides, and the temporary counter-pulling fastening of the side span 0# beam section is realized by fixing through the nut.