CN103981809B - Small bridge bridge floor supports beam method and Special supporting device - Google Patents
Small bridge bridge floor supports beam method and Special supporting device Download PDFInfo
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- CN103981809B CN103981809B CN201410209064.2A CN201410209064A CN103981809B CN 103981809 B CN103981809 B CN 103981809B CN 201410209064 A CN201410209064 A CN 201410209064A CN 103981809 B CN103981809 B CN 103981809B
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Abstract
The present invention seeks to propose a kind of bridge floor supporting way, fall to supporting a difficult problem to solve existing highway bridge.Small bridge bridge floor supports beam method, it is that supplemental support pier is separated setting with jacking support pier, and supplemental support pier is positioned at its top, bottom, girder steel two is connected to girder steel bottom, and jacking support pier is positioned at bridge both sides and is connected to girder steel end face by lifting-up support; Replace support steel beam by supplemental support pier and jacking support pier and realize steel beam position.Special supporting device, it comprises supplemental support pier and jacking support pier, and supplemental support pier is positioned at its top, bottom, girder steel two is connected to girder steel bottom, and jacking support pier is positioned at girder steel both sides and is connected to girder steel end face by lifting-up support.Supplemental support pier is separated setting with jacking pier by the present invention, and solve all support piers and be all arranged on pier cap beam position, work plane is narrow and small, the problem that efficiency of construction is low, and reduces beam risk, improves economic benefit.
Description
Technical field
The invention belongs to Steel Bridge installing engineering, coverage is that medium and small bridges is across both wired, cross a river installations.
Background technology
The lifting of and iron and steel production capacity fast-developing along with China's economic, urban road construction enters the flourish stage, Grade Separation Project, to be seen everywhere across both wired, cross a river constructions, and wherein cross-line part mostly to be span large, the girder steel that quality is light is first-selected form of structure.In work progress for reduce maybe can not interrupt existing traffic route to the impact of existing traffic route when, various forms of pushing tow mode is adopted to complete the installation erection of girder steel, steel girder erection pushing tow mode is a lot, but no matter adopt any pushing tow mode, setting up decline beam at steel girder erection is the most key or vital part, especially when the depth of beam that falls is more than 2 meters, whether success depends on to fall that whether beam scheme is reasonable, feasible to a great extent to install erection, the beam and different modes falls, efficiency, safe coefficient difference are very large; Innovate the target that the new beam method that falls is the tireless pursuit of solution designers, a kind of beam method that falls newly greatly can reduce construction risk and construction cost, improves efficiency of construction.
Summary of the invention
The present invention seeks to propose a kind of bridge floor supporting way, fall to supporting a difficult problem to solve existing Partial Bridges.
Small bridge bridge floor supports beam method, that supplemental support pier is separated setting with jacking support pier, and supplemental support pier is positioned at its top, bottom, girder steel two ends is connected to steel beam bottom, jacking support pier is positioned at bridge both ends and is connected to girder steel end face by lifting-up support; Replace support steel beam by supplemental support pier and jacking support pier to realize its position and fall.
Described method realizes in accordance with the following steps: after girder steel pushing tow puts in place, welds the lifting-up support of one end with structure of encorbelmenting at girder steel end face, arranges 1 jack and steel cushion block composition jacking support pier at lifting-up support end of encorbelmenting; Respectively arrange 1 group of supplemental support pier in each pinner position, this supplemental support pier and pinner contact position arrange sheet pack; After girder steel pushing tow puts in place, remove pushing tow frame for movement; The synchronization of jacking up of jacking support pier oil cylinder, makes supplemental support pier not stress; Block-by-block removes the steel plate under supplemental support pier, and jacking support cylinder synchronously declines, and after a stroke completes, girder steel is supported by supplemental support pier; Remove a joint jacking support pier steel cushion block, jack stand, removes a joint supplemental support pier steel cushion block and pads upper steel plate and fold, so repeat until girder steel is fallen on bearing completely.
Realize the Special supporting device of described method, it comprises supplemental support pier and jacking support pier, and supplemental support pier is positioned at its top, bottom, girder steel two ends is connected to girder steel bottom surface, and jacking support pier is positioned at girder steel both ends and is connected to girder steel end face by lifting-up support; Jacking support pier is made up of 1 jack and steel cushion block; Supplemental support pier is made up of sheet pack and steel cushion block; Described steel cushion block surrounding is shaped with bolt hole, is welded into drum rod member and is formed through machining by steel plate cutting, with bolts each other; Jack adopts double-action hydraulic top, and every two oil tops are controlled by a pumping plant.
Supplemental support pier is separated setting with jacking support pier and solves by the present invention: (1) all support piers are all arranged on pier cap beam position, and work plane is narrow and small, and the problem that efficiency of construction is low reduces beam risk, improves economic benefit; (2) pinner and height of support are very little, adopt existing mode or equipment all can not realize beam problem.
Beneficial effect:
1, the beam that falls is hung the work of operation more than 60%, transferred to firm safe position, reduced construction safety risk;
2, jacking support pier is separated with supplemental support pier, adds the work plane of pier cap beam position, eliminates jacking support pier and to overlap with supplemental support pier work plane situation;
3, adopt hydraulic power unit to control oil top, control two oil top synchronisms, decrease beam tipping risk.
4, when pinner and height of support are very little, when adopting usual manner or flat jack all can not realize beam, this method is adopted to realize beam.
5, reduce difficulty of construction, improve production efficiency, improve economic benefit.
Accompanying drawing explanation
Fig. 1 is Construction Principle schematic diagram of the present invention (comprising Special supporting device structural representation).
Fig. 2 is Fig. 1 top view.
Figure number illustrates: 1-lifting-up support, 2-jacking support pier, 3-concrete beam, 4-bent cap, 5-supplemental support pier, 6-stable support bar, 7-girder steel.
Detailed description of the invention
After girder steel pushing tow puts in place, remove pushing tow frame for movement; Supplemental support pier, jacking support pier and You Ding are installed.The bracing members frame of 4 groups of one end with structure of encorbelmenting is welded at girder steel end face, bracing frame will design according to girder steel weight, meeting when jack jacking indeformable, there is not problems of crack in weld seam, and encorbelmenting at bracing members frame, end is each arranges 1 jack and steel cushion block composition jacking support pier.Respectively arrange 1 group of supplemental support pier in each pinner position, the sheet pack of this pier and pinner contact position thickness setting 120mm, every block plate thickness is 12mm, is of a size of 400mm × 400mm.Jacking support pier and supplemental support pier height larger time, need to weld oblique H profile steel support member, improve the stability of support pier.Steel cushion block height is 150mm, and surrounding design bolt hole, weight 15Kg, is welded into drum rod member by steel plate cutting, with bolts each other.Jack adopts double-action hydraulic top, and every two oil tops are controlled by a pumping plant; The specifications and models on oil top determine according to the weight of jacking girder steel.
Construction sequence: jacking support pier oil cylinder synchronization of jacking up, supplemental support pier is not stressed, and block-by-block removes the steel plate under supplemental support pier, and jacking support pier oil cylinder synchronously declines, and after a stroke completes, girder steel is supported by supplemental support pier; Remove a joint jacking support pier steel cushion block, jack jacking, remove the auxiliary buttress steel cushion block of a joint and pad upper steel plate and fold, oil top falls, and progressively removes steel plate.Repetition like this is until girder steel is fallen on bearing completely.
Claims (2)
1. small bridge bridge floor supports beam method, supplemental support pier is it is characterized in that to be separated setting with jacking support pier, and supplemental support pier is positioned at its top, bottom, girder steel two ends is connected to girder steel bottom surface, jacking support pier is positioned at bridge both ends, is connected to girder steel end face by lifting-up support; Replace support steel beam by supplemental support pier and jacking support pier to realize its position and fall; And realize in accordance with the following steps: after girder steel pushing tow puts in place, weld the lifting-up support of one end with structure of encorbelmenting at girder steel end face, 1 jack and steel cushion block composition jacking support pier are set at lifting-up support end of encorbelmenting; Respectively arrange 1 group of supplemental support pier in each pinner position, this supplemental support pier and pinner contact position arrange sheet pack; After girder steel pushing tow puts in place, remove pushing tow frame for movement; The synchronization of jacking up of jacking support pier oil cylinder, supplemental support pier is not stressed, and block-by-block removes the steel plate under supplemental support pier, and jacking support pier oil cylinder synchronously declines, and after a stroke completes, girder steel is supported by supplemental support pier; Remove a joint jacking support pier steel cushion block, jack jacking; Remove a joint supplemental support pier steel cushion block and pad upper steel plate and fold, oil top falls, and progressively removes steel plate, so repeats until girder steel is fallen on bearing completely.
2. realize the Special supporting device that small bridge bridge floor as claimed in claim 1 supports beam method, it is characterized in that comprising supplemental support pier (5) and jacking support pier (2), and supplemental support pier (5) is positioned at its top, girder steel (7) bottom, two is connected to girder steel bottom, and jacking support pier (2) is positioned at girder steel both ends and is connected to girder steel end face by lifting-up support (1); Jacking support pier (2) is made up of 1 jack and steel cushion block; Supplemental support pier (5) is made up of steel cushion block and sheet pack, and described steel cushion block surrounding is shaped with bolt hole, is welded into drum rod member by steel plate cutting, with bolts each other; Jack adopts double-action hydraulic top, and every two oil tops are controlled by a pumping plant.
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| CN201410209064.2A CN103981809B (en) | 2014-05-15 | 2014-05-15 | Small bridge bridge floor supports beam method and Special supporting device |
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| CN201410209064.2A CN103981809B (en) | 2014-05-15 | 2014-05-15 | Small bridge bridge floor supports beam method and Special supporting device |
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| CN103981809A CN103981809A (en) | 2014-08-13 |
| CN103981809B true CN103981809B (en) | 2016-01-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104452597B (en) * | 2014-11-25 | 2016-06-29 | 中建六局第三建筑工程有限公司 | Pier prestressed cap beam with extra length Construction Supporting System in water |
| CN106087757B (en) * | 2016-08-01 | 2017-12-05 | 中铁十七局集团第三工程有限公司 | A high position in box beam erection falls beam construction method |
| CN110528405B (en) * | 2019-05-28 | 2022-01-07 | 武汉二航路桥特种工程有限责任公司 | Bridge high-altitude lifting and shifting device based on vehicle set and construction method thereof |
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| KR100958014B1 (en) * | 2010-01-29 | 2010-05-17 | 변형균 | Construction method of steel composite girder bridge |
| CN101845777A (en) * | 2009-03-27 | 2010-09-29 | 尹学军 | Built-in type floating track bed and method and device for lifting same |
| CN202881857U (en) * | 2012-10-25 | 2013-04-17 | 中铁十二局集团第二工程有限公司 | Beam falling device for bridge incremental launching method construction |
| CN103556575A (en) * | 2013-11-11 | 2014-02-05 | 中铁十五局集团有限公司 | Steel box girder falling construction method for crossing railway trunk line |
| CN204212060U (en) * | 2014-10-09 | 2015-03-18 | 中铁十局集团有限公司 | One falls beam steel work pad device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203855896U (en) * | 2014-05-15 | 2014-10-01 | 宝鸡中铁宝桥天元实业发展有限公司 | Support device special for small and medium-sized bridge surface |
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101845777A (en) * | 2009-03-27 | 2010-09-29 | 尹学军 | Built-in type floating track bed and method and device for lifting same |
| KR100958014B1 (en) * | 2010-01-29 | 2010-05-17 | 변형균 | Construction method of steel composite girder bridge |
| CN202881857U (en) * | 2012-10-25 | 2013-04-17 | 中铁十二局集团第二工程有限公司 | Beam falling device for bridge incremental launching method construction |
| CN103556575A (en) * | 2013-11-11 | 2014-02-05 | 中铁十五局集团有限公司 | Steel box girder falling construction method for crossing railway trunk line |
| CN204212060U (en) * | 2014-10-09 | 2015-03-18 | 中铁十局集团有限公司 | One falls beam steel work pad device |
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