CN104988853A - Method for replacing and repairing supports - Google Patents

Method for replacing and repairing supports Download PDF

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Publication number
CN104988853A
CN104988853A CN201510272765.5A CN201510272765A CN104988853A CN 104988853 A CN104988853 A CN 104988853A CN 201510272765 A CN201510272765 A CN 201510272765A CN 104988853 A CN104988853 A CN 104988853A
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CN
China
Prior art keywords
crossbeam
bearing
jack
new
shaped
Prior art date
Application number
CN201510272765.5A
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Chinese (zh)
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CN104988853B (en
Inventor
闫洋洋
苟金成
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上海同罡建筑工程有限公司
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Application filed by 上海同罡建筑工程有限公司 filed Critical 上海同罡建筑工程有限公司
Priority to CN201510272765.5A priority Critical patent/CN104988853B/en
Publication of CN104988853A publication Critical patent/CN104988853A/en
Application granted granted Critical
Publication of CN104988853B publication Critical patent/CN104988853B/en

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Abstract

The invention discloses a method for replacing and repairing supports. Multiple T-shaped beams are integrally connected through a crossbeam (1). A new pad-stone (2) is arranged between every two T-shaped beams and below the crossbeam (1), and a jack (3) is arranged on the new pad-stone (2). When the jacks (3) are started, the crossbeam (1) is integrally lifted with the cooperation of the multiple jacks, and therefore a bridge composed of the T-shaped beams is lifted. New supports (4) are arranged in the gaps between the crossbeam (1) and the new pad stones (2), then the jacks (3) fall down, the weight is mainly borne by the new supports (4), and the weight is auxiliarily borne by the jacks (3). The supports below the T-shaped beams are replaced or repaired, the jacks finishes falling (3), the crossbeam (1) is not required to be dismounted, and the crossbeam can be used for the next time. By employing the method, less supporting points are employed, the damage to the bridge floor due to uneven jacking is reduced, the bridge composed of the multiple T-shaped beams can be integrally lifted, the support for the T-shaped beams is reinforced, the crossbeam can be used for many times, and the cost of replacing the supports for the next time can be reduced.

Description

Bearing replacement method for maintaining
Technical field
Bearing replacement method for maintaining is applied to the replacing of T-shaped beam upper bracket, belongs to bridge construction field.
Background technology
T-shaped beam refers to that cross-sectional form is T-shaped beam.Both sides are chosen part and are called the edge of a wing, and intermediate portion is called beam rib.Because it is the equal of cut out rear formation by rectangular beam to the inoperative concrete in tension zone of flexural strength.Outside identical with original rectangle flexural strength, but both can save concrete, alleviate again the deadweight of component, improve span ability.T-shaped beam section pressure zone utilizes withstand voltage concrete make frange plate and double as bridge floor; Tensile region reinforcing bar or prestressed reinforcement bear pulling force.T-shaped cross section increases along with the width of wing plate, and depth of compression zone can be made to reduce, and the interior arm of couple increases, and required area of the pulled steel is reduced.
Bridge forms by many T-shaped beams are horizontally-spliced, when T-shaped back rises, is the damage reducing bridge floor transverse direction, needs to carry out jacking to integral bridge between bent cap.
In prior art, T-shaped beam and bridge deck structure integrated lifting.Utilize original bent cap load-bearing, at bent cap top edge support outer, under T web, lay U-shaped bracket, T web is held, at the jack in every sheet T-shaped beam both sides, the both wings of the U-shaped bracket of jacking, such as 6 single-ended shared 12 jack of T beam jacking simultaneously, is lifted to design height across T beam and bridge deck structure by whole on former bent cap.Bridge deck structure must not be cut, original bridge deck structure system is not destroyed, do not change the stress of lifting rear column simultaneously, but the Jacking point of the method is many, easy jacking inequality destroys bridge floor, many T-shaped beams are not realized integrated support by U-shaped bracket, and the narrow space between T-shaped beam and bent cap, and difficulty installed by U-shaped bracket.
Summary of the invention
The invention discloses bearing replacement method for maintaining, the method strong point is few, reduces jacking uneven to bridge surface mangle, realizes Integral lifting, reinforce the support of T-shaped beam, can repeatedly use, reduce again cost during replacing time the bridge of many T-shaped beam compositions.
Bearing replacement method for maintaining, is characterized in that, the step of described bearing replacement method for maintaining is as follows:
1) connected as one by many T-shaped beams with crossbeam 1, between two T-shaped beams, place new pinner 2 below crossbeam 1, new pinner 2 places jack 3, start jack 3, Integral lifting crossbeam 1 is closed in many assembly, thus promotes the bridge of T-shaped beam composition;
2) place new bearing 4 in the gap of crossbeam 1 and new pinner 2, fall jack 3 after rise, make the main load-bearing of new bearing 4, load-bearing assisted by jack 3;
3) change or keep in repair the bearing below T-shaped beam, after completing, jack 3 falls after rise, and crossbeam 1 does not need to remove, and waits until and uses next time.
Described crossbeam 1 is steel concrete or steel work.
The position of described crossbeam 1 is between the beam rib top and the bottom of T-shaped beam.
Under described new pinner 2 and non-duty, the height of jack 3 is less than the height of bent cap to crossbeam 1.
Described jack 3 is in the upper extent of new pinner 2.
Accompanying drawing explanation
Fig. 1 is the sectional view of bearing replacement method for maintaining;
In figure: 1, crossbeam, 2, new pinner, 3, jack, 4, new bearing.
Detailed description of the invention
Illustrate below in conjunction with embodiment:
Bearing replacement method for maintaining: two, T-shaped beam, pinner is placed by bent cap, pinner places bearing, and bearing and pinner support T-shaped beam beam rib, and two T-shaped beam top bridge floors pass through concreting.
Connected as one by many T-shaped beams with crossbeam 1, between two T-shaped beams, place new pinner 2 below crossbeam 1, new pinner 2 places jack 3, start jack 3, Integral lifting crossbeam 1 is closed in many assembly, thus promotes the bridge of T-shaped beam composition; Place new bearing 4 in the gap of crossbeam 1 and new pinner 2, fall jack 3 after rise, make the main load-bearing of new bearing 4, load-bearing assisted by jack 3; The bearing changed or keep in repair below T-shaped beam, after completing, jack 3 falls after rise, and crossbeam 1 does not need to remove, and waits until and uses next time.
Crossbeam 1 is steel concrete, and the position of crossbeam 1 is between the beam rib top and the bottom of T-shaped beam, and under new pinner 2 and non-duty, the height of jack 3 is less than the height of bent cap to crossbeam 1.Jack 3 is in the upper extent of new pinner 2.

Claims (5)

1. bearing replacement method for maintaining, is characterized in that, the step of described bearing replacement method for maintaining is as follows:
1) connected as one by many T-shaped beams with crossbeam (1), between two T-shaped beams, new pinner (2) is placed in crossbeam (1) below, new pinner (2) is placed jack (3), start jack (3), Integral lifting crossbeam (1) is closed in many assembly, thus promotes the bridge of T-shaped beam composition;
2) place new bearing (4) in the gap of crossbeam (1) and new pinner (2), fall jack (3) after rise, make new bearing (4) main load-bearing, load-bearing assisted by jack (3);
3) change or keep in repair the bearing below T-shaped beam, after completing, jack (3) falls after rise, and crossbeam (1) does not need to remove, and waits until and uses next time.
2. bearing replacement method for maintaining according to claim 1, is characterized in that, described crossbeam (1) is steel concrete or steel work.
3. bearing replacement method for maintaining according to claim 1, is characterized in that, the position of described crossbeam (1) is between the beam rib top and the bottom of T-shaped beam.
4. bearing replacement method for maintaining according to claim 1, is characterized in that, under described new pinner (2) and non-duty, the height of jack (3) is less than the height of bent cap to crossbeam (1).
5. bearing replacement method for maintaining according to claim 1, is characterized in that, described jack (3) is in the upper extent of new pinner (2).
CN201510272765.5A 2015-05-26 2015-05-26 Bearing replacement method for maintaining CN104988853B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201510272765.5A CN104988853B (en) 2015-05-26 2015-05-26 Bearing replacement method for maintaining

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510272765.5A CN104988853B (en) 2015-05-26 2015-05-26 Bearing replacement method for maintaining

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CN104988853A true CN104988853A (en) 2015-10-21
CN104988853B CN104988853B (en) 2016-09-07

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930198A (en) * 2017-04-10 2017-07-07 湖南城市学院 The processing method of modular bridge beam support and application
CN108709070A (en) * 2018-08-16 2018-10-26 蚌埠市万达电子有限公司 A kind of base mounting structure of weighing sensor easy to disassemble
CN110565544A (en) * 2019-08-21 2019-12-13 上海天演建筑物移位工程股份有限公司 support replacing method

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604841A (en) * 1983-04-01 1986-08-12 Barnoff Robert M Continuous, precast, prestressed concrete bridge deck panel forms, precast parapets, and method of construction
JP2002173912A (en) * 2000-12-07 2002-06-21 Ishikawajima Harima Heavy Ind Co Ltd Steel floorslab reinforcing structure in steel road bridge
CN101215823A (en) * 2008-01-18 2008-07-09 杭州市市政工程集团有限公司 Method for replacing bridge basin-type rubber support
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
CN103243662A (en) * 2013-05-28 2013-08-14 中铁上海设计院集团有限公司 Reconstruction and reinforcement method for existing railroad bridge
CN203475305U (en) * 2013-05-09 2014-03-12 北京市市政专业设计院股份公司 Reinforcing structure for bridge deck slab
CN204151698U (en) * 2014-05-13 2015-02-11 广东工业大学 T beam transverse prestress reinforcing construction

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4604841A (en) * 1983-04-01 1986-08-12 Barnoff Robert M Continuous, precast, prestressed concrete bridge deck panel forms, precast parapets, and method of construction
JP2002173912A (en) * 2000-12-07 2002-06-21 Ishikawajima Harima Heavy Ind Co Ltd Steel floorslab reinforcing structure in steel road bridge
CN101215823A (en) * 2008-01-18 2008-07-09 杭州市市政工程集团有限公司 Method for replacing bridge basin-type rubber support
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
CN203475305U (en) * 2013-05-09 2014-03-12 北京市市政专业设计院股份公司 Reinforcing structure for bridge deck slab
CN103243662A (en) * 2013-05-28 2013-08-14 中铁上海设计院集团有限公司 Reconstruction and reinforcement method for existing railroad bridge
CN204151698U (en) * 2014-05-13 2015-02-11 广东工业大学 T beam transverse prestress reinforcing construction

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106930198A (en) * 2017-04-10 2017-07-07 湖南城市学院 The processing method of modular bridge beam support and application
CN108709070A (en) * 2018-08-16 2018-10-26 蚌埠市万达电子有限公司 A kind of base mounting structure of weighing sensor easy to disassemble
CN110565544A (en) * 2019-08-21 2019-12-13 上海天演建筑物移位工程股份有限公司 support replacing method

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Inventor after: Yan Yangyang

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Inventor after: Wang Haiyang

Inventor after: Dong Haitao

Inventor after: Xing Zhenhuan

Inventor after: Zhao Dianfeng

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