CN114808672A - Inclined vertical pushing pier side support with limited space - Google Patents
Inclined vertical pushing pier side support with limited space Download PDFInfo
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- CN114808672A CN114808672A CN202210640477.0A CN202210640477A CN114808672A CN 114808672 A CN114808672 A CN 114808672A CN 202210640477 A CN202210640477 A CN 202210640477A CN 114808672 A CN114808672 A CN 114808672A
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- steel pipe
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
- E01D19/02—Piers; Abutments ; Protecting same against drifting ice
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01D—CONSTRUCTION OF BRIDGES, ELEVATED ROADWAYS OR VIADUCTS; ASSEMBLY OF BRIDGES
- E01D19/00—Structural or constructional details of bridges
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- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D27/00—Foundations as substructures
- E02D27/10—Deep foundations
- E02D27/12—Pile foundations
- E02D27/14—Pile framings, i.e. piles assembled to form the substructure
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- General Engineering & Computer Science (AREA)
- Bridges Or Land Bridges (AREA)
Abstract
The invention relates to a space-limited inclined vertical type pushing pier side support which comprises a bearing platform, wherein a pier body is arranged in the middle of the bearing platform, a vertical supporting structure is arranged around the outer ring of the pier body, the vertical supporting structure gradually inclines outwards from the bearing platform to the pier body, one end of the vertical supporting structure is fixed on the bearing platform, the other end of the vertical supporting structure is fixed on the pier body through a prestress opposite-pulling structure, and a buttress structure is arranged between the vertical supporting structure and the pier body. Meanwhile, the steel beam pushing device is simple and reasonable in structural form, safe and reliable, and can meet the requirement of steel beam pushing force.
Description
Technical Field
The invention relates to the technical field of bridge construction, in particular to a space-limited inclined vertical type pushing pier side support.
Background
When meeting mountain open circuit, bridge across water. With the rapid development of traffic in China, a plurality of large bridges are built in succession, wherein steel structure bridges are widely adopted due to the characteristics of light weight, high strength and the like, but the steel truss bridge usually adopts a construction method of on-site split-joint and jacking construction in consideration of the construction environment and the construction level.
The novel large bridge in Qiantangjiang is a dual-purpose bridge with an upper-lower layered common rail structure, the upper layer is a bidirectional multi-lane primary road, the lower layer is a double-line light rail, and the construction method of in-factory manufacturing, water transportation, field assembly, pushing construction and middle-side span closure is adopted.
At present, a bridge site of a newly-built bridge is difficult to be installed adjacent to a side bracket of an old second bridge pier, and piles are driven and drilled beside the pier to be used as foundation construction; and the steel beam is heavy, and the horizontal thrust generated by the steel beam pushing has high requirement on the bearing capacity of the structural form beside the pushing pier.
Based on the structure, the space-limited inclined vertical type pushing pier-side support is designed, the self-contained bearing platform is used as a pier-side support foundation, piles and drilled piles do not need to be driven into the pier side again, the temporary structure is reduced, and the problem that the construction space is limited due to the fact that the temporary structure is adjacent to the old bridge is solved.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides the inclined vertical type pushing pier side support with limited space, which has a simple and reasonable structure form, is safe and reliable and can meet the requirement of steel beam pushing stress.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows: the utility model provides a limited oblique vertical top in space pushes away other support of mound, includes the cushion cap, lays the pier shaft in the middle part of the cushion cap, encircles pier shaft outer lane and lays vertical bearing structure, vertical bearing structure is outwards leaned towards the pier shaft direction by the cushion cap gradually, vertical bearing structure's one end is fixed on the cushion cap, vertical bearing structure's the other end is fixed on the pier shaft through prestressing force counter-pull structure, still laid the counterfort structure between vertical bearing structure, the pier shaft.
According to a preferable scheme of the invention, the vertical supporting structure comprises a vertical supporting embedded part bottom plate, vertical supporting stand columns arranged above the vertical supporting embedded part bottom plate, and vertical supporting embedded part reinforcing steel bars arranged below the vertical supporting embedded part bottom plate, wherein a plurality of vertical supporting embedded part stiffening plates are also arranged on the vertical supporting embedded part bottom plate along the circumferential direction of the vertical supporting stand columns, and the vertical supporting embedded part reinforcing steel bars penetrate into the bearing platform and are bound with the bearing platform reinforcing steel bars.
As a preferable scheme of the invention, the top surface of the bottom plate of the vertical supporting embedded part is flush with the concrete of the top surface of the bearing platform.
As a preferred scheme of the invention, four vertical supporting upright columns are distributed in a group along the circumferential direction of the pier body, and the vertical supporting embedded part stiffening plates are welded with the vertical supporting upright columns.
According to a preferable scheme of the invention, the buttress structure comprises a transverse supporting steel pipe, one end of the transverse supporting steel pipe is fixedly connected with the pier body through a buttress stiffening plate, and the other end of the transverse supporting steel pipe is fixedly connected with the pier body through a buttress creeping cone, a connecting plate and a buttress sleeve.
As a preferable scheme of the invention, one end of the buttress climbing cone extends into the pier body and is connected with the pier body steel bars, the other end of the buttress climbing cone is connected with one end of a connecting plate, and the other end of the connecting plate is connected with a buttress sleeve.
As a preferred scheme of the invention, the diameter of the buttress sleeve is larger than that of the transverse supporting steel pipe, the transverse supporting steel pipe is sleeved in the buttress sleeve to realize clearance fit of the buttress sleeve and the transverse supporting steel pipe, and the buttress sleeve and the transverse supporting steel pipe are connected by welding.
As a preferred scheme of the invention, the prestress counter-pulling structure comprises a transverse hollow steel pipe, one end of the transverse hollow steel pipe is fixedly connected with the pier body through a climbing cone, and the other end of the transverse hollow steel pipe is fixedly connected with the vertical supporting upright post through a transverse supporting stiffening plate and a transverse supporting sleeve.
As a preferred scheme of the invention, a prestressed PVC pipeline is arranged in the transverse hollow steel pipe, the prestressed PVC pipeline sequentially passes through the vertical supporting upright post, the transverse hollow steel pipe and the pier body, a tension anchor plate is arranged on one side of the vertical supporting upright post, which is far away from the transverse hollow steel pipe, and the tension anchor plate is deep into the vertical supporting upright post.
As a preferable scheme of the invention, C50 micro-expansion fine-stone concrete is poured on the top of the vertical supporting upright post.
The invention has the beneficial effects that:
1. the invention takes the self-contained bearing platform as the foundation of the pier-side support, and does not need to re-drive piles and drilled piles beside the pier, thereby reducing the temporary structure and avoiding the problem of construction space limitation caused by adjacent old-second bridges; meanwhile, the steel beam pushing device is simple and reasonable in structural form, safe and reliable, and can meet the requirement of steel beam pushing force.
2. The counterfort structure is used for responding to the horizontal thrust generated by pushing the steel beam, and the prestress opposite-pulling structure is used for resisting the transverse impact force generated in the process of pushing the steel beam, so that the bearing capacity of the support beside the pushing pier is improved, and the stable installation of the support beside the pier is facilitated.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of a portion of the invention at A;
FIG. 3 is a top view of FIG. 2;
FIG. 4 is a partial enlarged view of the invention at B;
FIG. 5 is a second enlarged view of a portion of the invention at B;
FIG. 6 is an enlarged view of a portion of the invention at C;
reference numbers in the figures: 1-bearing platform, 2-vertical supporting structure, 3-counterfort structure, 4-prestress counter-pulling structure, 5-pier body, 6-C50 micro-expansion fine stone concrete, 11-bearing platform steel bar, 21-vertical supporting embedded part bottom plate, 22-vertical supporting upright post, 23-vertical supporting embedded part steel bar, 24-vertical supporting embedded part stiffening plate, 31-transverse supporting steel pipe, 32-counterfort stiffening plate, 33-counterfort creeping cone, 34-connecting plate, 35-counterfort casing pipe, 41-transverse hollow steel pipe, 42-transverse supporting stiffening plate, 43-transverse supporting casing pipe, 44-prestress PVC pipeline and 45-tensioning anchor plate.
Detailed Description
The following describes embodiments of the present invention in detail with reference to the accompanying drawings.
As shown in fig. 1-6, a limited-space inclined vertical top pushing pier side support comprises a bearing platform 1, a pier body 5 is arranged in the middle of the bearing platform 1, a vertical supporting structure 2 is arranged around the pier body 5, the vertical supporting structure 2 is gradually inclined outwards from the bearing platform 1 to the pier body 5, one end of the vertical supporting structure 2 is fixed on the bearing platform 1, the other end of the vertical supporting structure 2 is fixed on the pier body 5 through a prestress opposite-pulling structure 4, a buttress structure 3 is further arranged between the vertical supporting structure 2 and the pier body 5, the buttress structure 3 is arranged close to the prestress opposite-pulling structure 4 so as to bear the inclined vertical supporting structure 2, and the stability of the top pushing pier side support is guaranteed.
According to the invention, the self-contained bearing platform 1 is used as a pier-side support foundation, and piles and drilled piles do not need to be driven into the pier side again, so that the problem of construction space limitation caused by adjacent old bridges is solved by reducing a temporary structure; meanwhile, the counterfort structure 3 and the prestress opposite-pulling structure 4 are arranged, the counterfort structure 3 is used for responding to horizontal thrust generated by pushing the steel beam, the prestress opposite-pulling structure 4 is used for resisting transverse impact force generated in the process of pushing the steel beam, the bearing capacity of the support beside the pushing pier is improved, and stable installation of the support beside the pier is facilitated.
The vertical supporting structure 2 comprises a vertical supporting embedded part bottom plate 21 and vertical supporting upright posts 22 arranged above the vertical supporting embedded part bottom plate 21, wherein the vertical supporting upright posts 22 are preferably steel pipes with the diameter of 1800 mm; the vertical supporting embedded part reinforcing steel bars 23 installed below the vertical supporting embedded part bottom plates 21 are further provided with a plurality of vertical supporting embedded part reinforcing plates 24 distributed along the circumferential direction of the vertical supporting upright posts 22 on the vertical supporting embedded part bottom plates 21, the vertical supporting embedded part reinforcing plates 24 increase the connecting strength of the vertical supporting upright posts 22 and the vertical supporting embedded part bottom plates 21, and the vertical supporting embedded part reinforcing steel bars 23 penetrate into the bearing platform 1 and are bound with the bearing platform reinforcing steel bars 11 to realize the tight connection of the vertical supporting structure 2 and the bearing platform 1.
The top surface of the vertical supporting embedded part bottom plate 21 is flush with the top surface concrete of the bearing platform 1, so that the vertical supporting embedded part bottom plate is convenient to clean, and the rainwater is prevented from seeping downwards to play a role in preventing rust and corrosion.
The four vertical supporting columns 22 are arranged in the circumferential direction of the pier body 5 in a group, the sufficient vertical supporting columns 22 increase the strength of the vertical supporting structure 2, and the vertical supporting embedded part stiffening plates 24 are connected with the vertical supporting columns 22 in a welding mode.
The buttress structure 3 is used for responding to horizontal thrust generated by steel beam pushing, the buttress structure 3 comprises a transverse supporting steel pipe 31, the diameter of the transverse supporting steel pipe 31 is preferably 500mm, the thickness of the transverse supporting steel pipe 31 is preferably 6mm, one end of the transverse supporting steel pipe 31 is fixedly connected with the pier body 5 through a buttress stiffening plate 32, the transverse supporting steel pipe 31, the buttress stiffening plate 32 and the pier body 5 are connected in a welding mode, and the other end of the transverse supporting steel pipe 31 is fixedly connected with the pier body 5 through a buttress climbing cone 33, a connecting plate 34 and a buttress sleeve 35.
The method is characterized in that a wall-supporting crawling cone 11 is arranged before a pier body 5 is poured in advance, one end of the wall-supporting crawling cone 33 penetrates into the pier body 5 and is connected with pier body steel bars, the other end of the wall-supporting crawling cone 33 is connected with one end of a connecting plate 34, the other end of the connecting plate 34 is connected with a wall-supporting sleeve 35, and the connecting plate 34 is connected with the wall-supporting sleeve 35 through bolts.
The diameter of the buttress sleeve 35 is slightly larger than that of the transverse support steel pipe 31, the transverse support steel pipe 31 is sleeved into the buttress sleeve 35 to realize clearance fit of the buttress sleeve and the transverse support steel pipe, the fine adjustment bolt is screwed after reaching a proper angle, and finally the connection part of the buttress sleeve 35 and the transverse support steel pipe 31 is welded.
The calculation shows that a certain prestress needs to be applied to the top of the bracket to resist the transverse impact force generated in the steel beam pushing process.
The prestress counter-pulling structure 4 improves the bearing capacity of a bracket beside the pushing pier, the prestress counter-pulling structure 4 comprises a transverse hollow steel pipe 41, one end of the transverse hollow steel pipe 41 is fixedly connected with the pier body 5 through a climbing cone, and the other end of the transverse hollow steel pipe 41 is fixedly connected with the vertical supporting upright post 22 through a transverse supporting stiffening plate 42 and a transverse supporting sleeve 43.
A prestressed PVC pipeline 44 is arranged in the transverse hollow steel pipe 41, the prestressed PVC pipeline 44 sequentially passes through the vertical supporting upright 22, the transverse hollow steel pipe 41 and the pier body 5, and prestressed steel bars are arranged in the prestressed PVC pipeline 44, so that the prestressed steel bars are conveniently connected with the vertical supporting upright 22, the transverse hollow steel pipe 41 and the pier body 5; and a tension anchor plate 45 is arranged on one side of the vertical support upright post 22 far away from the transverse hollow steel pipe 41, and a steel plate with the thickness of 20mm is preferably selected as the tension anchor plate 45, so that a stiffening rib type steel member is manufactured to go deep into the vertical support upright post 22.
And C50 micro-expansion fine aggregate concrete is poured after the prestress tensioning is finished, namely C50 micro-expansion fine aggregate concrete 6 is poured at the top of the subsequent vertical supporting upright post 22, and C50 micro-expansion fine aggregate concrete 6 is poured to reduce the prestress loss and enhance the rigidity of the column cap of the vertical supporting upright post 22.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention; thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Although the reference numerals in the figures are used more here: 1-cushion cap, 2-vertical supporting structure, 3-counterfort structure, 4-prestress counter-pulling structure, 5-pier body, 6-C50 micro-expansion fine stone concrete 11-cushion cap reinforcing steel bar, 21-vertical supporting embedded part bottom plate, 22-vertical supporting upright post, 23-vertical supporting embedded part reinforcing steel bar, 24-vertical supporting embedded part stiffening plate, 31-transverse supporting steel pipe, 32-counterfort stiffening plate, 33-counterfort creeping cone, 34-connecting plate, 35-counterfort casing pipe, 41-transverse hollow steel pipe, 42-transverse supporting stiffening plate, 43-transverse supporting casing pipe, 44-prestress PVC pipeline, 45-tension anchor plate and other terms, but does not exclude the possibility of using other terms; these terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.
Claims (10)
1. The utility model provides a other support of oblique vertical top of limited space pushes away mound which characterized in that: including cushion cap (1), pier body (5) are laid at cushion cap (1) middle part, and vertical support structure (2) are laid to ring pier body (5) outer lane, vertical support structure (2) are by cushion cap (1) to pier body (5) direction camber gradually, the one end of vertical support structure (2) is fixed on cushion cap (1), the other end of vertical support structure (2) is fixed on pier body (5) through prestressing force counter-pull structure (4), buttress structure (3) have still been laid between vertical support structure (2), pier body (5).
2. The space-limited inclined vertical pushing pier-side support as claimed in claim 1, wherein: vertical support structure (2) include vertical support built-in fitting bottom plate (21), install vertical support stand (22) in vertical support built-in fitting bottom plate (21) top, install vertical support built-in fitting reinforcing bar (23) in vertical support built-in fitting bottom plate (21) below, vertical support built-in fitting stiffening plate (24) that a plurality of vertical support built-in fitting that follow vertical support stand (22) circumference were laid in addition on vertical support built-in fitting bottom plate (21), vertical support built-in fitting reinforcing bar (23) are gone deep into in cushion cap (1) and are ligatured with cushion cap reinforcing bar (11).
3. The space-limited inclined vertical pushing pier-side support as claimed in claim 2, wherein: the top surface of the vertical supporting embedded part bottom plate (21) is flush with the concrete on the top surface of the bearing platform (1).
4. The space-limited inclined vertical pushing pier-side support as claimed in claim 3, wherein: four vertical supporting columns (22) are arranged in a group in the circumferential direction around the pier body (5), and the vertical supporting embedded part stiffening plates (24) are connected with the vertical supporting columns (22) in a welding mode.
5. The space-limited inclined vertical pushing pier-side bracket as claimed in claim 4, wherein: the buttress structure (3) comprises a transverse supporting steel pipe (31), one end of the transverse supporting steel pipe (31) is fixedly connected with the pier body (5) through a buttress stiffening plate (32), and the other end of the transverse supporting steel pipe (31) is fixedly connected with the pier body (5) through a buttress climbing cone (33), a connecting plate (34) and a buttress sleeve (35).
6. The space-limited inclined vertical pushing pier-side bracket as claimed in claim 5, wherein: one end of the wall-supporting crawling cone (33) penetrates into the interior of the pier body (5) and is connected with pier body steel bars, the other end of the wall-supporting crawling cone (33) is connected with one end of a connecting plate (34), and the other end of the connecting plate (34) is connected with a wall-supporting sleeve (35).
7. The space-limited inclined vertical pushing pier-side bracket as claimed in claim 6, wherein: the diameter of the buttress sleeve (35) is larger than that of the transverse supporting steel pipe (31), the transverse supporting steel pipe (31) is sleeved in the buttress sleeve (35) to realize clearance fit of the buttress sleeve and the transverse supporting steel pipe, and the buttress sleeve (35) and the transverse supporting steel pipe (31) are connected through welding.
8. The space-constrained inclined pushing beside-pier support as claimed in claim 7, wherein: the prestress split structure (4) comprises a transverse hollow steel pipe (41), one end of the transverse hollow steel pipe (41) is fixedly connected with the pier body (5) through a climbing cone, and the other end of the transverse hollow steel pipe (41) is fixedly connected with the vertical supporting upright post (22) through a transverse supporting stiffening plate (42) and a transverse supporting sleeve (43).
9. The space-constrained inclined pushing beside-pier support as claimed in claim 8, wherein: laying prestressing force PVC pipeline (44) in horizontal hollow steel pipe (41), prestressing force PVC pipeline (44) loop through vertical support post (22), horizontal hollow steel pipe (41) and pier shaft (5), stretch-draw anchor slab (45) are laid to one side that horizontal hollow steel pipe (41) was kept away from in vertical support post (22), stretch-draw anchor slab (45) are deepened in vertical support post (22).
10. The space-constrained inclined pushing beside-pier support as claimed in claim 9, wherein: c50 micro-expansion fine aggregate concrete (6) is poured on the top of the vertical supporting upright post (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640477.0A CN114808672A (en) | 2022-06-08 | 2022-06-08 | Inclined vertical pushing pier side support with limited space |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210640477.0A CN114808672A (en) | 2022-06-08 | 2022-06-08 | Inclined vertical pushing pier side support with limited space |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114808672A true CN114808672A (en) | 2022-07-29 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210640477.0A Pending CN114808672A (en) | 2022-06-08 | 2022-06-08 | Inclined vertical pushing pier side support with limited space |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114808672A (en) |
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2022
- 2022-06-08 CN CN202210640477.0A patent/CN114808672A/en active Pending
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