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Rigid frame section prefabricating and assembling box girder mounting process
According to the rigid frame segment prefabrication and assembly box girder installation technology, segment girders are prefabricated in a short line matching mode in a prefabrication field, and prefabrication construction can be arranged and carried out in advance and does not conflict with a bridge site site; piers are dropped in the lower structure in a zoning manner, rigid frame beam sections at the tops of the piers are large cantilever systems, and social vehicle passing lanes are planned under the bridge; the bridge girder erection machines are arranged in a framing mode, and each bridge girder erection machine is responsible for erection of a single-side segment prefabricated box girder; under the condition that a pier top rigid frame beam section is a cast-in-place whole-width large cantilever system, two bridge cranes synchronously hoist a segmental beam in the left-right direction, so that the unbalance loading influence of the pier top rigid frame beam section is reduced; a pier top rigid frame beam section cast-in-place process and a prefabricated box beam section assembly process are combined, a pier top rigid frame beam section is cast in place to form a whole, then standard prefabricated sections are erected through a bridge girder erection machine to be connected in a matched mode, and rigid frame prefabricated assembly box beam construction of a pier falling in a middle division zone is achieved. Urban road space occupation can be effectively reduced, and the construction period of an upper structure is shortened.
本发明公开了一种刚构节段预制拼装箱梁安装工艺，节段梁在预制场短线匹配预制，预制施工可提前安排进行，不与桥位现场冲突；下部结构中分带落墩，墩顶刚构梁段为大悬臂体系，桥下规划社会车辆通行车道；架桥机分幅布置，每台桥机负责单侧的节段预制箱梁架设；在墩顶刚构梁段为现浇整幅大悬臂体系的情况下，两台桥机吊装节段梁时左右幅同步进行，以减小墩顶刚构梁段的偏载影响；采用墩顶刚构梁段现浇的工艺与预制箱梁节段拼装工艺结合，通过墩顶刚构梁段现现浇成整体，再通过架桥机架设标准预制节段匹配连接，实现落墩于中分带的刚构预制拼装箱梁施工；其可有效减少对城市道路空间占用，并且缩短上部结构工期。
Rigid frame section prefabricating and assembling box girder mounting process
According to the rigid frame segment prefabrication and assembly box girder installation technology, segment girders are prefabricated in a short line matching mode in a prefabrication field, and prefabrication construction can be arranged and carried out in advance and does not conflict with a bridge site site; piers are dropped in the lower structure in a zoning manner, rigid frame beam sections at the tops of the piers are large cantilever systems, and social vehicle passing lanes are planned under the bridge; the bridge girder erection machines are arranged in a framing mode, and each bridge girder erection machine is responsible for erection of a single-side segment prefabricated box girder; under the condition that a pier top rigid frame beam section is a cast-in-place whole-width large cantilever system, two bridge cranes synchronously hoist a segmental beam in the left-right direction, so that the unbalance loading influence of the pier top rigid frame beam section is reduced; a pier top rigid frame beam section cast-in-place process and a prefabricated box beam section assembly process are combined, a pier top rigid frame beam section is cast in place to form a whole, then standard prefabricated sections are erected through a bridge girder erection machine to be connected in a matched mode, and rigid frame prefabricated assembly box beam construction of a pier falling in a middle division zone is achieved. Urban road space occupation can be effectively reduced, and the construction period of an upper structure is shortened.
本发明公开了一种刚构节段预制拼装箱梁安装工艺，节段梁在预制场短线匹配预制，预制施工可提前安排进行，不与桥位现场冲突；下部结构中分带落墩，墩顶刚构梁段为大悬臂体系，桥下规划社会车辆通行车道；架桥机分幅布置，每台桥机负责单侧的节段预制箱梁架设；在墩顶刚构梁段为现浇整幅大悬臂体系的情况下，两台桥机吊装节段梁时左右幅同步进行，以减小墩顶刚构梁段的偏载影响；采用墩顶刚构梁段现浇的工艺与预制箱梁节段拼装工艺结合，通过墩顶刚构梁段现现浇成整体，再通过架桥机架设标准预制节段匹配连接，实现落墩于中分带的刚构预制拼装箱梁施工；其可有效减少对城市道路空间占用，并且缩短上部结构工期。
Rigid frame section prefabricating and assembling box girder mounting process
一种刚构节段预制拼装箱梁安装工艺
SU XIAOLONG (author) / YAO YA (author) / TONG YUHUI (author) / LIU ZIHAO (author) / KOU LIQIANG (author) / LI LINSHU (author)
2024-02-09
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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