CN102979042B - Bridge pier connecting device for bridge lifting process and construction method for bridge pier connecting device - Google Patents
Bridge pier connecting device for bridge lifting process and construction method for bridge pier connecting device Download PDFInfo
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- CN102979042B CN102979042B CN201210507025.1A CN201210507025A CN102979042B CN 102979042 B CN102979042 B CN 102979042B CN 201210507025 A CN201210507025 A CN 201210507025A CN 102979042 B CN102979042 B CN 102979042B
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Abstract
The invention discloses a bridge pier connecting device for a bridge lifting process and a construction method for the bridge pier connecting device, and relates to a connecting technology for bridge piers in bridge reconstruction processes. According to the connecting technology, self-compacting micro-expansive reinforced concrete pier columns and encasing steel plates are involved; the sizes and the numbers of internal vertical reinforcements are the same as those of vertical reinforcements in the conventional pier column structures; sealed stirrups are adopted, and are densely arranged within entire section ranges along connecting sections of the bridge piers; when more than four main vertical reinforcements are arranged on each side in the rectangular pier columns, combined stirrups are arranged; studs are welded on the surfaces of the encasing steel plates to improve the combined mechanical performance of the steel plates and concrete; and the encasing steel plates have a function of restricting core concrete, and can also serve as external dies for the concrete pouring of the connecting sections, and grout holes and weeping holes are reserved in the external dies. According to the connecting technology, requirements on the strength, the rigidity and the stability of the lifted bridge piers which are lifted can be met.
Description
Technical field
The present invention relates to a kind of bridge pier link technique, belong to civil engineering Bridge Rebuilding Project field.
Background technology
Along with the fast development of China's communications and transportation cause, the operation ability of the vehicles also improves day by day, and it runs highly also corresponding increase, and this makes the clear height of quite a few cross-line bridge and waterway bridge at present cannot meet the demand of bridge line normal operation.Therefore, be the operation function of the safety and bridge line of guaranteeing cross-line bridge, must improve clear height under the bridge of this Partial Bridges, integral bridge synchronization of jacking up technology is exactly the novel construction technology of arising at the historic moment in this context.Integral bridge synchronization of jacking up technological merit: few to the interference of surrounding during construction; Do not need earth clearance or take a large amount of construction plants; Construction period can be shortened; Avoid overlapping investment, there are good society and economic benefits.
For under-clearance can not meet navigation or bridge line operation demand be, general way be remove original bridge, again build the bridge met the demands that seat is new, or bridge carried out synchronization of jacking up.But remove the scheme of rebuilding to compare with jacking, have obvious waste.Such as: southern woods bridge jacking cost investment 9,970,000 (detail estimates) in Huzhou are got the bid engineering cost 6,400,000 yuan (comprising the contract price of 10% tentative gold), wiring engineering, monitoring and other expenditure are 3,570,000 yuan, estimate investment reduction about 3,500 ten thousand, 20 months reductions of erection time.
But in the middle of existing integral bridge synchronization of jacking up technology, after bridge jacking, the linkage section of new post and original cylinder often goes wrong, and causes whole construction speed slack-off.
Summary of the invention
The object of the invention is to design the bridge pier linkage in bridge jacking process and construction method thereof, solve the problem of the connection of new post and original cylinder after bridge jacking, for achieving the above object, take following technical scheme:
Bridge pier linkage in bridge jacking process, direct employing encased steel plate is as outboard template, comprise encased steel plate, peg, described encased steel plate comprises at least two blocks of split type steel plates, described encased steel plate has bleeding hole and grout hole, be fixed with some pegs uniformly in the inner side of described encased steel plate.
The construction method of the bridge pier linkage in described bridge jacking process: comprise following step,
Cut column concrete between thick pillar beam after the first step, bridge jacking, dock with identical vertical reinforcement;
Second step, configuration stirrup, and encryption;
3rd step, on described encased steel plate, fix peg after, the upper and lower side being fixed with the encased steel plate of peg is connected with upper and lower thick pillar beam;
4th step, concreting.
Described concrete adopts self-compaction slightly expanded concrete, is added with expansion agent in concrete simultaneously.
The quantity such as the vertical reinforcement same specification that described vertical reinforcement and former pier stud adopt, overlapping mode adopts compression sleeve mechanical connection.
Stirrup adopts closed stirrup, and the linkage section along bridge pier is encrypted in full segment limit, when the vertical main muscle quantity in the inner each limit of pier stud is more than four, arranges compound stirrup.
Apparatus of the present invention and construction method have the following advantages:
One, this connected mode goes for the connection of different size rectangular column.
Two, directly adopt encased steel plate as outboard template, save mould material, simplify construction sequence.
Three, weld stud inside encased steel plate, ensure that encased steel plate with the contacting of inner concrete, add the constraint of encased steel plate to inner concrete bodies, increase the mechanical property of cylinder.
Four, inner concrete adopts self-compaction slightly expanded concrete, ensure that density and the reliability of cylinder.
Accompanying drawing explanation
Fig. 1 is Elevated section bridge pier skiagraph of the present invention;
Fig. 2 is the A-A sectional view of Fig. 1;
Wherein 1, encased steel plate; 2, peg; 3, stirrup; 4, compound stirrup; 5, vertical main muscle; 6, self-compaction slightly expanded concrete; 7, grout hole; 8, bleeding hole; 9, bridge floor; 10, shrinkage joint; 11, bent cap; 12, former bridge pier; 13, pier stud Elevated section.
Detailed description of the invention
See Fig. 1 and Fig. 2, the technology that reinforces the connection of the present invention, it is made up of encased steel plate 1, peg 2, stirrup 3, vertical main muscle 5 and self-compaction slightly expanded concrete 6.Encased steel plate 1 is directly outer to be wrapped on former pier stud, its upper and lower end parts is directly close to upper and lower thick pillar beam, on the encased steel plate 1 of peg 2 welding uniformly, the size of peg 2 and spacing must meet cobble-stone diameter requirement in concrete, vertical main muscle 5 size, size are identical with the vertical main muscle in former pier stud with position, and overlapping mode adopts compression sleeve mechanical connection, must do the encryption process increasing stirrup 3 in segment limit, when the vertical main muscle in the inner each limit of rectangular pier columns is more than 4, compound stirrup 4 is set.The after-pouring self-compaction slightly expanded concrete 6 that template and inner reinforcing bar place, for ensureing density and the durability of structure, concrete adopts existing high flow degree, do not emanate again, there is uniformity, stability, building and rely on deadweight flowing, reaching closely knit self-compaction slightly expanded concrete 6 without the need to vibrating, in self-compaction slightly expanded concrete 6, add a small amount of expansion agent simultaneously make structure produce space and crack to prevent the shrinkage and creep in self-compaction slightly expanded concrete 6 hydration process.
Job step of the present invention: cut column concrete between thick pillar beam after the first step, bridge jacking, dock with identical vertical reinforcement; Second step, configuration stirrup, and encryption; 3rd step, after weld stud, direct for the upper and lower side of the encased steel plate being fixed with peg and upper and lower thick pillar beam to be connected on described encased steel plate; 4th step, build self-compaction slightly expanded concrete 6.
Above-mentioned connected mode without the need to form removal, after treating that inner self-compaction slightly expanded concrete reaches some strength, dismountable supporting and protection structure.
Claims (5)
1. the bridge pier linkage in bridge jacking process, direct employing encased steel plate is as outboard template, it is characterized in that: comprise encased steel plate, peg, described encased steel plate comprises at least two blocks of split type steel plates, described encased steel plate has bleeding hole and grout hole, be fixed with some pegs uniformly in the inner side of described encased steel plate.
2. according to the construction method of the bridge pier linkage in the bridge jacking process described in claim 1: it is characterized in that: comprise following step:
Cut column concrete between thick pillar beam after the first step, bridge jacking, dock with identical vertical reinforcement;
Second step, configuration stirrup, and encryption;
3rd step, on described encased steel plate, fix peg after, the upper and lower side that will be fixed with the encased steel plate of peg with up and down
Thick pillar beam is connected;
4th step, concreting.
3. according to the construction method of the bridge pier linkage in the bridge jacking process described in claim 2, it is characterized in that: described concrete adopts self-compaction slightly expanded concrete, in concrete, be added with expansion agent.
4. according to the construction method of the bridge pier linkage in the bridge jacking process described in claim 2, it is characterized in that: the quantity such as the vertical reinforcement same specification that described vertical reinforcement and former pier stud adopt, overlapping mode adopts compression sleeve mechanical connection.
5. according to the construction method of the bridge pier linkage in the bridge jacking process described in claim 2, it is characterized in that: stirrup adopts closed stirrup, linkage section along bridge pier is encrypted in full segment limit, when the vertical main muscle quantity in the inner each limit of pier stud is more than four, arranges compound stirrup.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210507025.1A CN102979042B (en) | 2012-12-03 | 2012-12-03 | Bridge pier connecting device for bridge lifting process and construction method for bridge pier connecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210507025.1A CN102979042B (en) | 2012-12-03 | 2012-12-03 | Bridge pier connecting device for bridge lifting process and construction method for bridge pier connecting device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102979042A CN102979042A (en) | 2013-03-20 |
| CN102979042B true CN102979042B (en) | 2015-07-01 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210507025.1A Expired - Fee Related CN102979042B (en) | 2012-12-03 | 2012-12-03 | Bridge pier connecting device for bridge lifting process and construction method for bridge pier connecting device |
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Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103510458B (en) * | 2013-09-24 | 2015-05-27 | 四川省交通运输厅公路规划勘察设计研究院 | Pile type continuous rigid frame bridge and construction method thereof |
| CN104594208A (en) * | 2014-12-18 | 2015-05-06 | 西南科技大学 | Seismic hardening device for bending-shear-torsion RC component |
| CN108342937B (en) * | 2018-03-14 | 2024-03-01 | 安徽省交通控股集团有限公司 | Prefabricated pier and plate suspension type cylindrical shear support connection structure |
| CN110502819B (en) * | 2019-08-14 | 2023-03-31 | 上海市城市建设设计研究总院（集团）有限公司 | Computer aided design method for external closed stirrup of concrete bridge strip-shaped member |
| CN113981810B (en) * | 2021-11-01 | 2024-01-26 | 华汇工程设计集团股份有限公司 | Prefabricated assembled bridge pier for jacking slope-adjusting bridge and construction method thereof |
| CN114250723B (en) * | 2022-01-05 | 2023-11-17 | 黄河勘测规划设计研究院有限公司 | Jacking reconstruction method for existing continuous rigid frame bridge |
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| JPH08269912A (en) * | 1995-03-31 | 1996-10-15 | Mitsubishi Heavy Ind Ltd | Fastening method of steel bridge pier to footing |
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| CN101736704A (en) * | 2008-11-21 | 2010-06-16 | 上海天演建筑物移位工程有限公司 | Bridge jacking method |
| CN201553992U (en) * | 2009-12-17 | 2010-08-18 | 杭州市市政工程集团有限公司 | Device for jacking whole body of box girder |
| CN101892636A (en) * | 2010-08-12 | 2010-11-24 | 上海先为土木工程有限公司 | Integral lifting reconstruction method for high-span overweight continuous box girder |
| CN102286940A (en) * | 2011-08-09 | 2011-12-21 | 中铁二十四局集团有限公司 | Construction method for remoulding old pier columns of bridges |
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2012
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Patent Citations (6)
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| JPH08269912A (en) * | 1995-03-31 | 1996-10-15 | Mitsubishi Heavy Ind Ltd | Fastening method of steel bridge pier to footing |
| JPH09302915A (en) * | 1996-05-16 | 1997-11-25 | Yamauchi Kogyo Kk | Construction work device |
| CN101736704A (en) * | 2008-11-21 | 2010-06-16 | 上海天演建筑物移位工程有限公司 | Bridge jacking method |
| CN201553992U (en) * | 2009-12-17 | 2010-08-18 | 杭州市市政工程集团有限公司 | Device for jacking whole body of box girder |
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| CN102979042A (en) | 2013-03-20 |
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