CN101613996A - Sliding type lower cable-stayed cradle construction method - Google Patents
Sliding type lower cable-stayed cradle construction method Download PDFInfo
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- CN101613996A CN101613996A CN200810064801A CN200810064801A CN101613996A CN 101613996 A CN101613996 A CN 101613996A CN 200810064801 A CN200810064801 A CN 200810064801A CN 200810064801 A CN200810064801 A CN 200810064801A CN 101613996 A CN101613996 A CN 101613996A
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Abstract
Sliding type lower cable-stayed cradle construction method along with increasing of the construction of high-grade highway and grand bridge, Bridge Project project, is striden footpath prestress concrete beam type structure cantilever pouring construction technology greatly and has been obtained using widely.The present invention forms and comprises: the segmentation of cantilever beam body, cantilever pouring, the construction of main bridge segmentation cantilever pouring prestress concrete, the present invention is applied to stride greatly pre-stressing force cantilever beam slab, continuous girder bridge, the firm structure of T type in footpath, the construction of structure bridge types such as continuous rigid frame.
Description
Technical field:
The utility model relates in a kind of bridge construction and adopts sliding type lower cable-stayed cradle construction method.
Background technology:
Along with increasing of the construction of high-grade highway and grand bridge, Bridge Project project, stride footpath prestress concrete beam type structure cantilever pouring construction technology greatly and obtained using widely.
Summary of the invention:
The purpose of this utility model provides the sliding type lower cable-stayed cradle technology that a kind of construction forming is fast, utilization rate of equipment and installations is high.
Above-mentioned purpose realizes by following technical scheme:
Sliding type lower cable-stayed cradle construction method, its composition comprises: the segmentation of cantilever beam body, cantilever pouring, main bridge segmentation cantilever pouring prestress concrete construction, when the segmentation of described cantilever beam body is the free cantilever casting construction, the beam body divides four major parts to build, A is a pier back timber section, B is by pier back timber section bilateral symmetry segmentation cantilever pouring part, C is the lateral opening part of building on support, D is that girder is built the closure part at span centre, described cantilever pouring is to build pier back timber section on pier jacking frame, and enforcement pier beam temporary consolidation device, pillar shaped steel structure extension indigo plant under the cantilever is being installed on the pier back timber section, to both sides successively symmetrically segmentation build girder to the leading portion that joins the two sections of a bridge, etc, formwork is built cast-in-place beam section on the interim carriage between beam-ends and abutment pier, and described girder segmentation cantilever pouring prestress concrete construction comprises the A beam section construction of pier top, cantilever B beam cantilever casting construction, cast-in-place C beam section construction, D beam section (closure section) construction.
Described sliding type lower cable-stayed cradle construction method, described pier top A beam section construction sequence is: built-in fitting, reinforcing bar, prestressed strand and duct, ground tackle is intensive interlocks, the beam face has big longitudinal gradient and horizontal wall inscription, end face links to each other closely with to be poured section, adopt 2 layers on the technology and build first base plate trailing web and top board.
Described sliding type lower cable-stayed cradle construction method, described cantilever B beam cantilever casting construction are that B section beam is grown segmentation with hanging blue symmetrical cantilever by 3.5-5m, and B section construction sequence cantilever section adopts builds for 1 time.
Described sliding type lower cable-stayed cradle construction method, described cast-in-place C beam section construction is that the C section is the cast-in-place part on the end bay support, set up interim pier support platform in the assembly unit of the other employing of pier shaped steel, divide segment to build processing step: interim pile foundation is set, build the steel bar concrete cushion cap, widen abutment pier concrete cushion cap and built-in fitting is set, assembling support, set up the shaped steel platform, load pressure testing, cast-in-place bed die and side form are installed, measure floor elevation and position, web reinforcement at the bottom of the colligation, end longitudinal prestressing pipeline is installed, dress end mould and web film, self check is qualified, build base plate and web concrete, health is treated by force, teleblem in the dress, reinforcing bar at the bottom of the colligation top board, install and vertically reach the transverse prestress pipeline, colligation top board top layer reinforcing bar, self check is qualified, build the top board concrete, health cutter hair, remove the termination template, stretch-draw vertical prestressing bar and top board transverse prestress muscle, it is horizontal to drag the outside, remove the case inner formword.
Described sliding type lower cable-stayed cradle construction method, described D beam section (closure section) construction is that the job practices that adopts symmetrical operation is executed in the segmentation cantilever of continuous beam, full beam work progress is to begin to finish to cantilever pouring from each pier top A beam section, again with each cantilever splicing, join the two sections of a bridge, etc at last and form whole continuous beam, closure is the important step of construction continuously and system conversion, closing construction must satisfy the designing requirement of stress and keep the beam body linear, control the construction error of closure section well, closure section construction is first end bay in proper order, strides in last.
Beneficial effect of the present invention:
The outstanding following cable-stayed type formed steel construction of building of the present invention hang that indigo plant has the utilization rate height, cost is low, node is few, distortion is little, light weight, need not balance weight, structure is perfect, construction is flexible, characteristic of strong applicability.Be applicable to stride greatly that footpath, wide dark river, mountain valley, navigation are frequent, the bridge top cantilever casting construction on the river that is difficult for operation at sea.The cast-in-place cantilever method major advantage is to need not to set up floor stand, need not goliath and cargo carrier, its capital equipment is that a pair of walking extension is blue, hang Lan Kezai stretch-draw anchor and be linked to be on the whole beam section with pier shaft move, assembling reinforcement, formwork erection, build construction technologies such as concrete, prestressing force and can carry out hanging on the basket.After finishing this section construction, hang indigo plant and move a sections symmetrically forward again, descend a pair of beam section construction, so step by step, section build until closure and to finish.This job practices is particularly suitable for the river of the frequently unsuitable operation at sea in wide dark river, mountain valley, construction period SEA LEVEL VARIATION and navigation is frequent and need leave bridge construction under the conditions such as river of headroom greatly during construction.
2. the present invention has obtained significant effect in the bridge construction kind, has accelerated programming, and has controlled engineering cost effectively.
3. the present invention has saved great deal of steel, has reduced cost, has improved operating efficiency.
4. the present invention hangs blue weight and the cantilever weight ratio is about 0.3, is that the balanced type ballast is hung blue unrivaledly in the past, hangs blue with the balance ballast and other indigo plants of hanging commonly used are compared, and has tangible advantage
5. the present invention is mainly used in the pre-stressing force cantilever beam slab of striding the footpath greatly, structure bridge types such as continuous girder bridge, the firm structure of T type, continuous rigid frame are particularly suitable for frequent and need leave the bridge construction in rivers such as bigger quiet appearance when constructing across the river of wide dark river and mountain valley, the frequently unsuitable operation at sea of construction period SEA LEVEL VARIATION and navigation.
The specific embodiment:
Embodiment 1:
Sliding type lower cable-stayed cradle construction method, its composition comprises: the segmentation of cantilever beam body, cantilever pouring, main bridge segmentation cantilever pouring prestress concrete construction, when the segmentation of described cantilever beam body is the free cantilever casting construction, the beam body divides four major parts to build, A is a pier back timber section, B is by pier back timber section bilateral symmetry segmentation cantilever pouring part, C is the lateral opening part of building on support, D is that girder is built the closure part at span centre, described cantilever pouring is to build pier back timber section on pier jacking frame, and enforcement pier beam temporary consolidation device, pillar shaped steel structure extension indigo plant under the cantilever is being installed on the pier back timber section, to both sides successively symmetrically segmentation build girder to the leading portion that joins the two sections of a bridge, etc, formwork is built cast-in-place beam section on the interim carriage between beam-ends and abutment pier, and described girder segmentation cantilever pouring prestress concrete construction comprises the A beam section construction of pier top, cantilever B beam cantilever casting construction, cast-in-place C beam section construction, D beam section (closure section) construction.
Embodiment 2:
Above-mentioned sliding type lower cable-stayed cradle construction method, described pier top A beam section construction sequence is: built-in fitting, reinforcing bar, prestressed strand and duct, ground tackle is intensive interlocks, the beam face has big longitudinal gradient and horizontal wall inscription, end face links to each other closely with to be poured section, adopt 2 layers on the technology and build first base plate trailing web and top board.
Embodiment 3:
Above-mentioned sliding type lower cable-stayed cradle construction method, cantilever B beam cantilever casting construction are that B section beam is grown segmentation with hanging blue symmetrical cantilever by 3.5-5m, and B section construction sequence cantilever section adopts builds for 1 time.
Embodiment 4:
Above-mentioned sliding type lower cable-stayed cradle construction method, cast-in-place C beam section construction is that the C section is the cast-in-place part on the end bay support, set up interim pier support platform in the assembly unit of the other employing of pier shaped steel, divide segment to build processing step: interim pile foundation is set, build the steel bar concrete cushion cap, widen abutment pier concrete cushion cap and built-in fitting is set, assembling support, set up the shaped steel platform, load pressure testing, cast-in-place bed die and side form are installed, measure floor elevation and position, web reinforcement at the bottom of the colligation, end longitudinal prestressing pipeline is installed, dress end mould and web film, self check is qualified, build base plate and web concrete, health is treated by force, teleblem in the dress, reinforcing bar at the bottom of the colligation top board, install and vertically reach the transverse prestress pipeline, colligation top board top layer reinforcing bar, self check is qualified, build the top board concrete, health cutter hair, remove the termination template, stretch-draw vertical prestressing bar and top board transverse prestress muscle, it is horizontal to drag the outside, remove the case inner formword.
Embodiment 5:
Above-mentioned sliding type lower cable-stayed cradle construction method, D beam section (closure section) construction is that the job practices that adopts symmetrical operation is executed in the segmentation cantilever of continuous beam, full beam work progress is to begin to finish to cantilever pouring from each pier top A beam section, again with each cantilever splicing, join the two sections of a bridge, etc at last and form whole continuous beam, closure is the important step of construction continuously and system conversion, closing construction must satisfy the designing requirement of stress and keep the beam body linear, control the construction error of closure section well, closure section construction is first end bay in proper order, strides in last.
Claims (8)
1. sliding type lower cable-stayed cradle construction method, its composition comprises: the segmentation of cantilever beam body, cantilever pouring, main bridge segmentation cantilever pouring prestress concrete construction, it is characterized in that: when the segmentation of described cantilever beam body is the free cantilever casting construction, the beam body divides four major parts to build, A is a pier back timber section, B is by pier back timber section bilateral symmetry segmentation cantilever pouring part, C is the lateral opening part of building on support, D is that girder is built the closure part at span centre, described cantilever pouring is to build pier back timber section on pier jacking frame, and enforcement pier beam temporary consolidation device, pillar shaped steel structure extension indigo plant under the cantilever is being installed on the pier back timber section, to both sides successively symmetrically segmentation build girder to the leading portion that joins the two sections of a bridge, etc, formwork is built cast-in-place beam section on the interim carriage between beam-ends and abutment pier, and described girder segmentation cantilever pouring prestress concrete construction comprises the A beam section construction of pier top, cantilever B beam cantilever casting construction, cast-in-place C beam section construction, D beam section (closure section) construction.
2. sliding type lower cable-stayed cradle construction method according to claim 1, it is characterized in that: described pier top A beam section construction sequence is: built-in fitting, reinforcing bar, prestressed strand and duct, ground tackle is intensive interlocks, the beam face has big longitudinal gradient and horizontal wall inscription, end face links to each other closely with to be poured section, adopt 2 layers on the technology and build first base plate trailing web and top board.
3. sliding type lower cable-stayed cradle construction method according to claim 1 and 2 is characterized in that: described cantilever B beam cantilever casting construction is that B section beam is grown segmentation with hanging blue symmetrical cantilever by 3.5-5m, and B section construction sequence cantilever section adopts builds for 1 time.
4. sliding type lower cable-stayed cradle construction method according to claim 1 and 2, it is characterized in that: described cast-in-place C beam section construction is that the C section is the cast-in-place part on the end bay support, set up interim pier support platform in the assembly unit of the other employing of pier shaped steel, divide segment to build processing step: interim pile foundation is set, build the steel bar concrete cushion cap, widen abutment pier concrete cushion cap and built-in fitting is set, assembling support, set up the shaped steel platform, load pressure testing, cast-in-place bed die and side form are installed, measure floor elevation and position, web reinforcement at the bottom of the colligation, end longitudinal prestressing pipeline is installed, dress end mould and web film, self check is qualified, build base plate and web concrete, health is treated by force, teleblem in the dress, reinforcing bar at the bottom of the colligation top board, install and vertically reach the transverse prestress pipeline, colligation top board top layer reinforcing bar, self check is qualified, build the top board concrete, health cutter hair, remove the termination template, stretch-draw vertical prestressing bar and top board transverse prestress muscle, it is horizontal to drag the outside, remove the case inner formword.
5. sliding type lower cable-stayed cradle construction method according to claim 3, it is characterized in that: described cast-in-place C beam section construction is that the C section is the cast-in-place part on the end bay support, set up interim pier support platform in the assembly unit of the other employing of pier shaped steel, divide segment to build processing step: interim pile foundation is set, build the steel bar concrete cushion cap, widen abutment pier concrete cushion cap and built-in fitting is set, assembling support, set up the shaped steel platform, load pressure testing, cast-in-place bed die and side form are installed, measure floor elevation and position, web reinforcement at the bottom of the colligation, end longitudinal prestressing pipeline is installed, dress end mould and web film, self check is qualified, build base plate and web concrete, health is treated by force, teleblem in the dress, reinforcing bar at the bottom of the colligation top board, install and vertically reach the transverse prestress pipeline, colligation top board top layer reinforcing bar, self check is qualified, build the top board concrete, health cutter hair, remove the termination template, stretch-draw vertical prestressing bar and top board transverse prestress muscle, it is horizontal to drag the outside, remove the case inner formword.
6. according to claim 1 or 2 or 5 described sliding type lower cable-stayed cradle construction methods, it is characterized in that: described D beam section (closure section) construction is that the job practices that adopts symmetrical operation is executed in the segmentation cantilever of continuous beam, full beam work progress is to begin to finish to cantilever pouring from each pier top A beam section, again with each cantilever splicing, join the two sections of a bridge, etc at last and form whole continuous beam, closure is the important step of construction continuously and system conversion, closing construction must satisfy the designing requirement of stress and keep the beam body linear, control the construction error of closure section well, closure section construction is first end bay in proper order, strides in last.
7. sliding type lower cable-stayed cradle construction method according to claim 3, it is characterized in that: described D beam section (closure section) construction is that the job practices that adopts symmetrical operation is executed in the segmentation cantilever of continuous beam, full beam work progress is to begin to finish to cantilever pouring from each pier top A beam section, again with each cantilever splicing, join the two sections of a bridge, etc at last and form whole continuous beam, closure is the important step of construction continuously and system conversion, closing construction must satisfy the designing requirement of stress and keep the beam body linear, control the construction error of closure section well, closure section construction is first end bay in proper order, strides in last.
8. sliding type lower cable-stayed cradle construction method according to claim 4, it is characterized in that: described D beam section (closure section) construction is that the job practices that adopts symmetrical operation is executed in the segmentation cantilever of continuous beam, full beam work progress is to begin to finish to cantilever pouring from each pier top A beam section, again with each cantilever splicing, join the two sections of a bridge, etc at last and form whole continuous beam, closure is the important step of construction continuously and system conversion, closing construction must satisfy the designing requirement of stress and keep the beam body linear, control the construction error of closure section well, closure section construction is first end bay in proper order, strides in last.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN200810064801A CN101613996A (en) | 2008-06-24 | 2008-06-24 | Sliding type lower cable-stayed cradle construction method |
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| CN200810064801A CN101613996A (en) | 2008-06-24 | 2008-06-24 | Sliding type lower cable-stayed cradle construction method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805808A (en) * | 2015-05-13 | 2015-07-29 | 武汉大学 | Method for intercepting by utilizing temporary construction traffic bridge |
| CN105780662A (en) * | 2016-04-08 | 2016-07-20 | 上海城建市政工程（集团）有限公司 | Large-span support deflection control construction method |
| CN106958206A (en) * | 2017-04-07 | 2017-07-18 | 中交第二公路勘察设计研究院有限公司 | Hybrid structure of arch and beam formula continuous rigid frame bridge bilayer bottom basket bilayer button hangs constructing device and method |
-
2008
- 2008-06-24 CN CN200810064801A patent/CN101613996A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104805808A (en) * | 2015-05-13 | 2015-07-29 | 武汉大学 | Method for intercepting by utilizing temporary construction traffic bridge |
| CN105780662A (en) * | 2016-04-08 | 2016-07-20 | 上海城建市政工程（集团）有限公司 | Large-span support deflection control construction method |
| CN105780662B (en) * | 2016-04-08 | 2017-09-08 | 上海城建市政工程（集团）有限公司 | A kind of Long span support amount of deflection controls construction method |
| CN106958206A (en) * | 2017-04-07 | 2017-07-18 | 中交第二公路勘察设计研究院有限公司 | Hybrid structure of arch and beam formula continuous rigid frame bridge bilayer bottom basket bilayer button hangs constructing device and method |
| CN106958206B (en) * | 2017-04-07 | 2018-10-12 | 中交第二公路勘察设计研究院有限公司 | Hybrid structure of arch and beam formula continuous rigid frame bridge bilayer bottom basket bilayer button hangs constructing device and method |
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Open date: 20091230 |