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A platform for research: civil engineering, architecture and urbanism
Cantilever casting asynchronous construction method for corrugated steel web continuous box girder bridge segments
The invention provides a corrugated steel web continuous box girder bridge section suspended casting asynchronous construction method which comprises the following steps: after a 0 # section is cast in place, lifting a 1 # section U-shaped prefabricated structure to a 0 # section cantilever, and reinforcing and welding; then wet joints and bottom plate concrete pouring construction at the residual height are carried out; then 1 # section top plate concrete is poured; then, a second section U-shaped prefabricated structure is lifted to the position of a first section cantilever, corrugated steel webs on the two sides are welded, and wet joints and bottom plate concrete pouring construction at the remaining height are conducted; and construction of other sections is circularly conducted, remaining construction is completed till the whole bridge is closed, and prestress tensioning is conducted after the whole bridge is closed. A cast-in-place concrete bottom plate is replaced with the semi-prefabricated assembly type bottom plate, an asynchronous construction method is adopted, a plurality of working faces are added, the engineering period is effectively shortened, in addition, high-altitude construction work can be effectively reduced through prefabricated assembly type construction, the construction safety risk is reduced, and the cost is saved.
本发明创造提供了一种波形钢腹板连续箱梁桥节段悬浇异步施工方法，在0#节段现浇完成后，将1#节段U型预制结构提升至0#节段悬臂处，加固焊接；之后进行湿接缝及剩余高度底板混凝土浇筑施工；之后浇筑1#节段顶板混凝土；然后将2#节段U型预制结构提升至1#节段悬臂处，焊接两侧波形钢腹板，进行湿接缝及剩余高度底板混凝土浇筑施工；循环进行其它节段施工，完成剩余施工，直至合拢，全桥合拢后进行预应力张拉。本发明通过半预制拼装式底板代替现浇混凝土底板，且采用异步施工法，增加多个作业面，有效缩短工程周期，另外，预制拼装式施工能有效的减少高空施工作业，降低施工安全风险，节约成本。
Cantilever casting asynchronous construction method for corrugated steel web continuous box girder bridge segments
The invention provides a corrugated steel web continuous box girder bridge section suspended casting asynchronous construction method which comprises the following steps: after a 0 # section is cast in place, lifting a 1 # section U-shaped prefabricated structure to a 0 # section cantilever, and reinforcing and welding; then wet joints and bottom plate concrete pouring construction at the residual height are carried out; then 1 # section top plate concrete is poured; then, a second section U-shaped prefabricated structure is lifted to the position of a first section cantilever, corrugated steel webs on the two sides are welded, and wet joints and bottom plate concrete pouring construction at the remaining height are conducted; and construction of other sections is circularly conducted, remaining construction is completed till the whole bridge is closed, and prestress tensioning is conducted after the whole bridge is closed. A cast-in-place concrete bottom plate is replaced with the semi-prefabricated assembly type bottom plate, an asynchronous construction method is adopted, a plurality of working faces are added, the engineering period is effectively shortened, in addition, high-altitude construction work can be effectively reduced through prefabricated assembly type construction, the construction safety risk is reduced, and the cost is saved.
本发明创造提供了一种波形钢腹板连续箱梁桥节段悬浇异步施工方法，在0#节段现浇完成后，将1#节段U型预制结构提升至0#节段悬臂处，加固焊接；之后进行湿接缝及剩余高度底板混凝土浇筑施工；之后浇筑1#节段顶板混凝土；然后将2#节段U型预制结构提升至1#节段悬臂处，焊接两侧波形钢腹板，进行湿接缝及剩余高度底板混凝土浇筑施工；循环进行其它节段施工，完成剩余施工，直至合拢，全桥合拢后进行预应力张拉。本发明通过半预制拼装式底板代替现浇混凝土底板，且采用异步施工法，增加多个作业面，有效缩短工程周期，另外，预制拼装式施工能有效的减少高空施工作业，降低施工安全风险，节约成本。
Cantilever casting asynchronous construction method for corrugated steel web continuous box girder bridge segments
一种波形钢腹板连续箱梁桥节段悬浇异步施工方法
XING LIXIN (author) / LIANG QUAN (author) / WANG XUDONG (author) / WANG ZHONGRUI (author) / LUAN JIANGWEI (author)
2022-03-08
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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