Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Segmented construction method for multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder
The invention discloses a segmented construction method for a multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder, and relates to the technical field of cast-in-place continuous rigid frame box girder construction methods, in particular to the segmented construction method for the multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder. According to an existing cast-in-place beam structure, a bridge pier body is prone to cracking due to concrete shrinkage and creep; and the influence on projects with high span, complex environment and difficult maintenance is large. Comprising the steps of erecting a disc buckle type supporting system, installing a bottom die and a side die, pre-pressing a support, dividing the single-connection cast-in-place beam into 2N + 1 sections, installing pouring formworks from the middle section to the two sides, and pouring concrete. The horizontal force generated by concrete shrinkage and creep on the pier body can be effectively reduced through segmented construction; the plate buckle type supporting system is adopted, the construction period is effectively shortened, the plate buckle type supporting system is suitable for crossing important lines or structures such as subways and railways, the self weight of single-time pouring concrete is reduced, and the plate buckle type supporting system comprehensively and evenly bears force on the concrete and ensures that deflection changes are consistent.
一种多跨非对称预应力混凝土现浇连续刚构箱梁分段施工工法，涉及现浇连续刚箱梁施工方法技术领域，具体涉及一种多跨非对称预应力混凝土现浇连续刚构箱梁分段施工工法。为解决现有现浇梁结构因混凝土收缩徐变易造成桥梁墩身开裂；对跨度高、环境复杂且养护困难的工程影响大的问题。包括搭设盘扣式支撑系统、底模和侧模的安装、支架预压和将单联现浇梁分为2N+1个节段，从中间处节段分别向两侧安装浇筑模板并浇筑混凝土。分段施工可有效降低混凝土收缩徐变对墩身产生的水平力；采用盘扣式支撑系统，有效缩短工期，适用于跨越地铁、铁路等重要线路或构筑物，降低单次浇筑混凝土自重，盘扣式支撑系统对混凝土全面均匀受力，保证挠度变化一致。
Segmented construction method for multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder
The invention discloses a segmented construction method for a multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder, and relates to the technical field of cast-in-place continuous rigid frame box girder construction methods, in particular to the segmented construction method for the multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder. According to an existing cast-in-place beam structure, a bridge pier body is prone to cracking due to concrete shrinkage and creep; and the influence on projects with high span, complex environment and difficult maintenance is large. Comprising the steps of erecting a disc buckle type supporting system, installing a bottom die and a side die, pre-pressing a support, dividing the single-connection cast-in-place beam into 2N + 1 sections, installing pouring formworks from the middle section to the two sides, and pouring concrete. The horizontal force generated by concrete shrinkage and creep on the pier body can be effectively reduced through segmented construction; the plate buckle type supporting system is adopted, the construction period is effectively shortened, the plate buckle type supporting system is suitable for crossing important lines or structures such as subways and railways, the self weight of single-time pouring concrete is reduced, and the plate buckle type supporting system comprehensively and evenly bears force on the concrete and ensures that deflection changes are consistent.
一种多跨非对称预应力混凝土现浇连续刚构箱梁分段施工工法，涉及现浇连续刚箱梁施工方法技术领域，具体涉及一种多跨非对称预应力混凝土现浇连续刚构箱梁分段施工工法。为解决现有现浇梁结构因混凝土收缩徐变易造成桥梁墩身开裂；对跨度高、环境复杂且养护困难的工程影响大的问题。包括搭设盘扣式支撑系统、底模和侧模的安装、支架预压和将单联现浇梁分为2N+1个节段，从中间处节段分别向两侧安装浇筑模板并浇筑混凝土。分段施工可有效降低混凝土收缩徐变对墩身产生的水平力；采用盘扣式支撑系统，有效缩短工期，适用于跨越地铁、铁路等重要线路或构筑物，降低单次浇筑混凝土自重，盘扣式支撑系统对混凝土全面均匀受力，保证挠度变化一致。
Segmented construction method for multi-span asymmetric prestressed concrete cast-in-place continuous rigid frame box girder
一种多跨非对称预应力混凝土现浇连续刚构箱梁分段施工工法
LYU NIANZE (Autor:in) / YU LIQIAN (Autor:in) / AN LUMING (Autor:in) / WU PENGCHENG (Autor:in) / ZHANG WEIBIN (Autor:in) / SUN GANG (Autor:in) / WANG LEI (Autor:in) / CHEN MEIYU (Autor:in)
17.01.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
E01D
BRIDGES
,
Brücken
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