CN208039023U - A kind of assembled bridge pier structure - Google Patents

A kind of assembled bridge pier structure Download PDF

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Publication number
CN208039023U
CN208039023U CN201820535566.8U CN201820535566U CN208039023U CN 208039023 U CN208039023 U CN 208039023U CN 201820535566 U CN201820535566 U CN 201820535566U CN 208039023 U CN208039023 U CN 208039023U
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China
Prior art keywords
pier
steel pipe
shaft
base
cast
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Expired - Fee Related
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CN201820535566.8U
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Chinese (zh)
Inventor
邱文亮
李治
姜涛
张哲�
黄才良
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Dalian University of Technology
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Dalian University of Technology
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Priority to CN201820535566.8U priority Critical patent/CN208039023U/en
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Publication of CN208039023U publication Critical patent/CN208039023U/en
Expired - Fee Related legal-status Critical Current
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Abstract

A kind of assembled bridge pier structure and its construction method, precast pier pier shaft makes and cast-in-place pier base pours completion, by pouring, the pier shaft in precast pier pier shaft indulges muscle extension, the reinforcing bar extension inside cast-in-place pier base is fixedly connected again, precast pier pier shaft and cast-in-place pier base are determined into position, the finally casting concrete into the trepanning steel pipe of precast pier pier shaft, until pier shaft concrete is full of linkage section and steel duct, the assembly of bridge pier each section is completed.The utility model introduces the assembled system of precast pier pier shaft, cast-in-place pier base and linkage section three parts composition, solves the problems, such as that existing assembled bridge pier jackshaft pier is difficult with base support, ensures the reliability of component assembling process;It is closely knit to solve the problems, such as that existing assembled bridge pier middle connecting segment concrete can not pour, ensures globality and fastness after component assembly;The utility model carries out local strengthening to bridge pier pier bottom areas of plasticity hinge, improves shearing resistance and the energy consumption shock resistance of bridge pier.

Description

A kind of assembled bridge pier structure
Technical field
The utility model is related to bridge engineering construction technical fields, more particularly to a kind of assembled bridge pier structure.
Background technology
Assembled bridge pier is that vertically modularization is split as several components by bridge pier, as bent cap (pier cap), pier shaft, cushion cap, Pile foundation etc. is made in factory or precasting yard, then transports to construction site and carry out on-site consolidation on the ground.With cast-type bridge Pier is compared, and advantage mainly has:Batch production is prefabricated can be carried out at the same time with other live staged constructions, shortened the construction period;Manufacturer's standard Change and make, be conducive to quality assurance, reduces human cost;Conducive to more adaptable under environmental protection and complicated weather and environment.
Currently, generally use connects the assembled mode of prefabricated more piece bridge pier pier shaft progress in China's Practical Project It connects, this assembly connection method needs the embedded bar branch sleeve in bridge pier pier shaft prefabricated subsection.With bridge pier pier shaft height Increase, the segment of bridge pier pier shaft increases significantly, while pre-buried reinforcing steel bar connecting sleeve tube quantity being needed also accordingly to increase, and carries significantly The high cost of manufacture pier column.
Another precast assembly connection method more commonly used at present wears prestressing force by the through-hole that column is reserved The mode of steel strand wires connects column prefabricated subsection integral.As to disclose a kind of segment pre- by Chinese patent CN103374881A The assembled Bridge Pier Structure System of system, including cushion cap, are provided with pier shaft on cushion cap, and pier shaft and cushion cap are equipped with deformed bar, pier shaft by The prefabricated reinforced concrete segment of multiple interconnections forms, and prestressed pore passage is reserved in prefabricated reinforced concrete segment, is answered in advance Power reinforcing bar is arranged in prestressed pore passage, and one end of deformed bar is connect with the anchored end positioned at cushion cap, deformed bar The other end is connect with the anchored end at the top of pier shaft.This method mostly uses splicing seam connection in section assembling bridge pier, uses The mode of post-tensioning prestressing with bond segment is connected it is integral, however, between the joint face of segment often due to contact leakiness can make At deformed bar or steel hinge line corrosion, accurate positionin and grouting during assembling construction between each component require, and apply Work complex procedures cause assembled bridge pier globality poor.
China is in mass transportation and builds period, and overhead road of city, high ferro and bridge pier over strait etc. are exactly substructure section The suitable application area of section assembling construction technology.Therefore, there is an urgent need for study in a kind of precast pier pier shaft segment not by those skilled in the art Need the prefabricated assembled bridge pier that prestress wire is set and embedded bar branch sleeve, construction cost are low and progress is fast.
Utility model content
The technical issues of being solved required by the utility model is the deficiency for above-mentioned existing issue, and it is whole to provide a kind of bridge The structural form and construction method of body assembled bridge pier.The utility model is using precast pier pier shaft and cast-in-place pier footing and company The assembled bridge pier structural form of section composition is connect, bridge pier bottom end areas of plasticity hinge carries out local strengthening, promotes assembling bridge Stability and anti-seismic performance;Using first precast pier pier shaft and cast-in-place pier footing, then the novel of concrete filled steel tube sum is poured afterwards and is applied Work method, ensure linkage section concreting density, simplify splicing prefabricated components Joining Technology with improve engineering efficiency and Reliability.
The technical solution of the utility model:
A kind of assembled bridge pier structure, including precast pier pier shaft 1, cast-in-place pier base 2 and linkage section 3, precast pier Pier shaft 1 is fixedly connected by linkage section 3 with cast-in-place pier base 2;
The precast pier pier shaft 1 includes that steel pipe 4, pier shaft concrete 5 and pier shaft indulge muscle 6, and steel pipe 4 is located at precast pier 1 inside center of pier shaft constructs for variable cross-section, and steel pipe top 41 is thin relative to steel pipe lower part 42, under steel pipe top 41 and steel pipe Portion 42 is connected by intermediate doughnut-shaped steel plate 43;Steel pipe lower part 42 is equipped with a segment elongation section, elongation along 1 bottom of precast pier pier shaft Duan Sizhou is provided with upper and lower two rows of openings;Steel pipe 4 is externally provided with one layer of pier shaft concrete 5 and pier shaft indulges muscle 6, and it is rounded that pier shaft indulges muscle 6 Distribution, pier shaft indulges muscle 6 has a segment elongation section along 1 bottom of precast pier pier shaft.
The diameter on the steel pipe top 41 is not less than 1/5th of 1 diameter of precast pier pier shaft, steel pipe lower part 42 Diameter is not less than the one third of 1 diameter of precast pier pier shaft, and 42 length of steel pipe lower part is not less than 1 diameter of precast pier pier shaft Twice.
The hole shape that the extension of the steel pipe lower part 42 is equipped with is circle, a diameter of 42 diameter of steel pipe lower part One third, the opening diameter that the distance between upper and lower two rows of openings is twice.
The elongation segment length of the steel pipe lower part 42 adds ten times of sum of pier shaft 6 diameter of vertical muscle, pier shaft not less than 400mm Vertical muscle 6 extends 2/3rds that segment length is not less than 42 extension of steel pipe lower part, pier shaft indulge the vertical muscle spacing of 6 extension of muscle with it is existing The bar spacing for pouring 2 reinforcing bar extension of pier base is equal.
Cast-in-place pier base 2 is made of base concrete 7 and pier base reinforcing bar 8, and cast-in-place pier base 2 is whole in circle Column, 2 center of top of cast-in-place pier base are equipped with groove, and groove is rounded;Groove diameter is identical as 42 diameter of steel pipe lower part, groove Depth is not less than cast-in-place pier base 1/2nd six;Muscle is indulged with a row of groove inner distance minimum in pier base reinforcing bar 8, There is a segment elongation section along 2 top of cast-in-place pier base;Pier base reinforcing bar 8 extends segment length not less than steel pipe lower extended section 2/3rds.
The assembled bridge pier construction method, steps are as follows:
Step 1: making precast pier pier shaft 1:Pipe cutting top 41, steel pipe lower part 42 and doughnut-shaped steel plate 43 first, will The mode that steel pipe top 41, doughnut-shaped steel plate 43 and steel pipe lower part 42 pass sequentially through welding is fixed together;Precast pier is bound again Bridge pier pier shaft in pier shaft 1 indulges muscle 6, and binding completion is indulged the vertical muscle cage of bridge pier that muscle 6 is constituted by bridge pier pier shaft to be temporarily fixed at 4 outside of steel pipe;Then it is indulged in bridge pier and erects template on the outside of muscle cage, pier shaft concrete 5, precast pier pier are poured in 4 outside of steel pipe Body 1 completes;
Step 2: making cast-in-place pier base 2:Cutting pier base reinforcing bar 8 first, binds in cast-in-place pier base 2 Pier base reinforcing bar 8 is at pier base steel reinforcement cage;Then template is erected on the outside of pier base steel reinforcement cage, then erects pier base The circular shuttering of center of top groove;Base concrete 7 is finally poured, cast-in-place pier base completes;
Step 3: pouring linkage section 3, bridge pier each section is assembled:First by 1 steel pipe lower part 42 of precast pier pier shaft and now It pours the alignment of 2 groove of pier base to be accurately positioned, hoisting prefabricated bridge pier pier shaft 1, by precast pier pier shaft 1 and cast-in-place pier base 2 Positioning;Then 1 pier shaft of precast pier pier shaft is indulged 6 extension of muscle to weld with 2 reinforcing bar extension of cast-in-place pier base, by prefabricated bridge Pier pier shaft 1 is tentatively fixed with cast-in-place pier base 2;Again template, the casting concrete into steel pipe 4, while pouring are erected in linkage section 3 Side is shaken, until pier shaft concrete 5 is full of inside linkage section 3 and steel pipe 4, completes the assembly of bridge pier each section.
Compared with existing assembled bridge pier technology, the effect and benefit of the utility model are:
One, the utility model introduces the assembled of precast pier pier shaft, cast-in-place pier base and linkage section three parts composition System solves the problems, such as that existing assembled bridge pier jackshaft pier is difficult with base support, ensures the reliability of component assembling process.This Assembled system is fixedly connected by the vertical muscle extension of precast pier pier shaft with the reinforcing bar extension inside cast-in-place pier base, The support strength between precast pier precast pier pier shaft and cast-in-place pier base is improved, ensure that the stabilization of bridge pier pier shaft Property;By precast pier pier shaft steel pipe lower part and the identical size setting of cast-in-place pier base groove ensure precast pier pier shaft and Cast-in-place pier base precise positioning overcomes work progress precast pier pier shaft and is difficult to support and asked with what verticality was difficult to control Topic, it is more more reliable than Precast Concrete Segmental Bridges assembled bridge pier connection common at present.
Two, the utility model proposes the forms of construction work by steel pipe lower openings to bridge pier lower part casting concrete, solve Existing assembled bridge pier middle connecting segment concrete can not pour closely knit problem, ensure the globality after component assembly and securely Property.Section assembling bridge pier mostly uses wet seam connection in China's Practical Project at present, will by the way of post-tensioning prestressing with bond Segment connection it is integral, however between the joint face of segment often due to contact leakiness can cause rod iron or steel hinge line corrosion, in addition, It need to also be in the milk in preserved pipeline, working procedure is complicated;This form of construction work first will be at the beginning of precast pier pier shaft and cast-in-place pier base Step is fixed, then erects a small amount of template in linkage section, and the casting concrete into steel pipe ensures that assembled bridge pier linkage section concrete pours Build closely knit problem.
Three, the utility model introduces precast pier main component the structure type of core steel core concrete column, this Structure type combines the advantages of both ordinary reinforced concrete column and steel core concrete column, to bridge pier pier bottom areas of plasticity hinge into Row local strengthening improves shearing resistance and the energy consumption shock resistance of bridge pier.The core steel tube concrete that precast pier main component introduces The advantage that earth pillar structure type utilizes concrete filled steel tube resistance to compression and shear resistance is strong, displacement Ductility is good, energy dissipation capacity is strong, substantially carries The anti-seismic performance of high pier;Simultaneously as there is the supporting role of pier bottom core concrete filled steel tube, the remaining of bridge pier can be reduced and become Shape, improves the turning power of pier bottom plastic hinge, improves recoverability and emergency disaster relief function after shake, can be greatly lowered by The directly or indirectly earthquake loss caused by bridge collapse.
Description of the drawings
Fig. 1 is the overall structure diagram of the utility model.
Fig. 2 is the inside configuration diagrammatic cross-section of the utility model.
Fig. 3 is diagrammatic cross-section at the steel pipe top section of the utility model.
Fig. 4 is diagrammatic cross-section at the steel pipe lower section of the utility model.
Fig. 5 is the cast-in-place pier base diagrammatic cross-section of the utility model.
Fig. 6 is the precast pier pier shaft diagrammatic cross-section of the utility model.
Fig. 7 is the linkage segment structure schematic diagram of the precast pier pier shaft and cast-in-place pier base of the utility model.
Fig. 8 is the overall structure assembly construction schematic diagram of the utility model.
Fig. 9 is that the precast pier pier shaft of the utility model and cast-in-place pier base assemble schematic diagram in work progress.
In figure:1 precast pier pier shaft;2 cast-in-place pier bases;3 linkage sections;4 steel pipes;41 steel pipe tops;42 steel pipe lower parts; 43 doughnut-shaped steel plates;5 pier shaft concrete;6 pier shafts indulge muscle;7 base concretes;8 pier base reinforcing bars.
Specific implementation mode
Specific embodiment of the present utility model is described in detail below in conjunction with technical solution (and attached drawing).
A kind of assembled bridge pier structure and its construction method of the utility model, as shown in figs 1-9.
A kind of assembled bridge pier structure, including precast pier pier shaft 1, cast-in-place pier base 2 and linkage section 3, precast pier Pier shaft 1 is fixedly connected by linkage section 3 with cast-in-place pier base 2;
The precast pier pier shaft 1 includes that steel pipe 4, pier shaft concrete 5 and pier shaft indulge muscle 6, and steel pipe 4 is located at precast pier 1 inside center of pier shaft constructs for variable cross-section, and steel pipe top 41 is thin relative to steel pipe lower part 42, under steel pipe top 41 and steel pipe Portion 42 is connected by intermediate doughnut-shaped steel plate 43;Steel pipe lower part 42 is equipped with a segment elongation section, elongation along 1 bottom of precast pier pier shaft Duan Sizhou is provided with upper and lower two rows of openings;Steel pipe 4 is externally provided with one layer of pier shaft concrete 5 and pier shaft indulges muscle 6, and it is rounded that pier shaft indulges muscle 6 Distribution, pier shaft indulges muscle 6 has a segment elongation section along 1 bottom of precast pier pier shaft.
The diameter on the steel pipe top 41 is not less than 1/5th of 1 diameter of precast pier pier shaft, steel pipe lower part 42 Diameter is not less than the one third of 1 diameter of precast pier pier shaft, and 42 length of steel pipe lower part is not less than 1 diameter of precast pier pier shaft Twice.
The hole shape that the extension of the steel pipe lower part 42 is equipped with is circle, a diameter of 42 diameter of steel pipe lower part One third, the opening diameter that the distance between upper and lower two rows of openings is twice.
The elongation segment length of the steel pipe lower part 42 adds ten times of sum of pier shaft 6 diameter of vertical muscle, pier shaft not less than 400mm Vertical muscle 6 extends 2/3rds that segment length is not less than 42 extension of steel pipe lower part, pier shaft indulge the vertical muscle spacing of 6 extension of muscle with it is existing The bar spacing for pouring 2 reinforcing bar extension of pier base is equal.
Cast-in-place pier base 2 is made of base concrete 7 and pier base reinforcing bar 8, and cast-in-place pier base 2 is whole in circle Column, 2 center of top of cast-in-place pier base are equipped with groove, and groove is rounded;Groove diameter is identical as 42 diameter of steel pipe lower part, groove Depth is not less than cast-in-place pier base 1/2nd six;Muscle is indulged with a row of groove inner distance minimum in pier base reinforcing bar 8, There is a segment elongation section along 2 top of cast-in-place pier base;Pier base reinforcing bar 8 extends segment length not less than steel pipe lower extended section 2/3rds.
The assembled bridge pier construction method, steps are as follows:
Step 1: making precast pier pier shaft 1:Pipe cutting top 41, steel pipe lower part 42 and doughnut-shaped steel plate 43 first, will The mode that steel pipe top 41, doughnut-shaped steel plate 43 and steel pipe lower part 42 pass sequentially through welding is fixed together;Precast pier is bound again Bridge pier pier shaft in pier shaft 1 indulges muscle 6, and binding completion is indulged the vertical muscle cage of bridge pier that muscle 6 is constituted by bridge pier pier shaft to be temporarily fixed at 4 outside of steel pipe;Then it is indulged in bridge pier and erects template on the outside of muscle cage, pier shaft concrete 5, precast pier pier are poured in 4 outside of steel pipe Body 1 completes;
Step 2: making cast-in-place pier base 2:Cutting pier base reinforcing bar 8 first, binds in cast-in-place pier base 2 Pier base reinforcing bar 8 is at pier base steel reinforcement cage;Then template is erected on the outside of pier base steel reinforcement cage, then erects pier base The circular shuttering of center of top groove;Base concrete 7 is finally poured, cast-in-place pier base completes;
Step 3: pouring linkage section 3, bridge pier each section is assembled:First by 1 steel pipe lower part 42 of precast pier pier shaft and now It pours the alignment of 2 groove of pier base to be accurately positioned, hoisting prefabricated bridge pier pier shaft 1, by precast pier pier shaft 1 and cast-in-place pier base 2 Positioning;Then 1 pier shaft of precast pier pier shaft is indulged 6 extension of muscle to weld with 2 reinforcing bar extension of cast-in-place pier base, by prefabricated bridge Pier pier shaft 1 is tentatively fixed with cast-in-place pier base 2;Again template, the casting concrete into steel pipe 4, while pouring are erected in linkage section 3 Side is shaken, until pier shaft concrete 5 is full of inside linkage section 3 and steel pipe 4, completes the assembly of bridge pier each section.

Claims (8)

1. a kind of assembled bridge pier structure, which is characterized in that the assembled bridge pier structure include precast pier pier shaft (1), Cast-in-place pier base (2) and linkage section (3), precast pier pier shaft (1) are fixed by linkage section (3) and cast-in-place pier base (2) Connection;
The precast pier pier shaft (1) includes that steel pipe (4), pier shaft concrete (5) and pier shaft indulge muscle (6), and steel pipe (4) is located at pre- Bridge pier pier shaft (1) inside center processed, for variable cross-section construct, steel pipe top (41) relative to steel pipe lower part (42) carefully, on steel pipe Portion (41) is connect with steel pipe lower part (42) by intermediate doughnut-shaped steel plate (43);Steel pipe lower part (42) is along precast pier pier shaft (1) Bottom is equipped with a segment elongation section, and extension surrounding is provided with upper and lower two rows of openings;Steel pipe (4) is externally provided with one layer of pier shaft concrete (5) Muscle (6) is indulged with pier shaft, pier shaft indulges muscle (6) rounded distribution, and pier shaft indulges muscle (6) has one section to stretch along precast pier pier shaft (1) bottom Long section;
The cast-in-place pier base (2) is made of base concrete (7) and pier base reinforcing bar (8), cast-in-place pier base (2) Whole is in cylinder, and cast-in-place pier base (2) center of top is equipped with groove, and groove is rounded;
The steel pipe lower part (42) of precast pier pier shaft (1) is located in the groove of cast-in-place pier base (2), solid by linkage section (3) Fixed connection.
2. assembled bridge pier structure according to claim 1, which is characterized in that the diameter on the steel pipe top (41) is not Less than 1/5th of precast pier pier shaft (1) diameter, the diameter of steel pipe lower part (42) is not less than precast pier pier shaft (1) diameter One third, steel pipe lower part (42) length is not less than twice of precast pier pier shaft (1) diameter.
3. assembled bridge pier structure according to claim 1 or 2, which is characterized in that stretch steel pipe lower part (42) The hole shape that long section is equipped with is round, the one third of a diameter of steel pipe lower part (42) diameter, between upper and lower two rows of openings The opening diameter that distance is twice.
4. assembled bridge pier structure according to claim 1 or 2, which is characterized in that stretch steel pipe lower part (42) Long segment length is not less than ten times of the sum that 400mm adds pier shaft to indulge muscle (6) diameter, and pier shaft indulges muscle (6) elongation segment length and is not less than steel 2/3rds of pipe lower part (42) extension, pier shaft indulges the vertical muscle spacing of muscle (6) extension and cast-in-place pier base (2) reinforcing bar is stretched The bar spacing of long section is equal.
5. assembled bridge pier structure according to claim 3, which is characterized in that the extension of the steel pipe lower part (42) Length is not less than ten times of the sum that 400mm adds pier shaft to indulge muscle (6) diameter, and pier shaft indulges muscle (6) elongation segment length not less than under steel pipe 2/3rds of portion (42) extension, pier shaft indulge the vertical muscle spacing and cast-in-place pier base (2) reinforcing bar extension of muscle (6) extension Bar spacing it is equal.
6. according to the assembled bridge pier structure described in claim 1,2 or 5, which is characterized in that the groove diameter and steel pipe Lower part (42) diameter is identical, and depth of groove is not less than cast-in-place pier base (2) 1/6th;In pier base reinforcing bar (8) with it is recessed One row of slot inner distance minimum indulges muscle, has a segment elongation section at the top of cast-in-place pier base (2);Pier base reinforcing bar (8) is stretched Long segment length is not less than 2/3rds of steel pipe lower extended section.
7. assembled bridge pier structure according to claim 3, which is characterized in that the groove diameter and steel pipe lower part (42) diameter is identical, and depth of groove is not less than cast-in-place pier base (2) 1/6th;In pier base reinforcing bar (8) in groove One row of lateral extent minimum indulges muscle, has a segment elongation section at the top of cast-in-place pier base (2);Pier base reinforcing bar (8) extension Length is not less than 2/3rds of steel pipe lower extended section.
8. assembled bridge pier structure according to claim 4, which is characterized in that the groove diameter and steel pipe lower part (42) diameter is identical, and depth of groove is not less than cast-in-place pier base (2) 1/6th;In pier base reinforcing bar (8) in groove One row of lateral extent minimum indulges muscle, has a segment elongation section at the top of cast-in-place pier base (2);Pier base reinforcing bar (8) extension Length is not less than 2/3rds of steel pipe lower extended section.
CN201820535566.8U 2018-04-10 2018-04-10 A kind of assembled bridge pier structure Expired - Fee Related CN208039023U (en)

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Application Number Priority Date Filing Date Title
CN201820535566.8U CN208039023U (en) 2018-04-10 2018-04-10 A kind of assembled bridge pier structure

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109488099A (en) * 2018-12-27 2019-03-19 中国移动通信集团甘肃有限公司 It is a kind of for communicating the fender pier of overhead transmission line engineering construction
CN110886230A (en) * 2019-12-13 2020-03-17 安徽文天信息科技有限公司 A high strength rapid Assembly type bridge strutting arrangement for construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109488099A (en) * 2018-12-27 2019-03-19 中国移动通信集团甘肃有限公司 It is a kind of for communicating the fender pier of overhead transmission line engineering construction
CN110886230A (en) * 2019-12-13 2020-03-17 安徽文天信息科技有限公司 A high strength rapid Assembly type bridge strutting arrangement for construction
CN110886230B (en) * 2019-12-13 2021-05-07 江苏省交通工程集团有限公司 A high strength rapid Assembly type bridge strutting arrangement for construction

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