A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Method capable of reducing stress of auxiliary pier of double-tower composite beam cable-stayed bridge
The invention discloses a design method for solving the problem of overlarge tensile stress of a bridge deck at the top of an auxiliary pier of a double-tower steel-concrete composite beam cable-stayed bridge, a prefabricated UHPC (ultra-high performance concrete) plate is adopted at the top of the auxiliary pier, and the ultrahigh tensile capacity of the UHPC plate is used for bearing the large tensile stress of the bridge deck at the top of the auxiliary pier. The structure is simple, the manufacturing cost is low, installation is convenient and fast, the number of prestressed steel beams is reduced, the service life of the bridge deck slab is remarkably prolonged, only the UHPC plates are arranged at the auxiliary pier top and the midspan closure position, the cost is low, and good economic practicability and popularization prospects are achieved.
本发明公开了一种用于解决双塔钢混结合梁斜拉桥辅助墩顶处桥面板拉应力过大的设计方法，在辅助墩顶采用预制UHPC（超高性能混凝土）板，用UHPC板的超高抗拉能力来承受辅助墩顶桥面板较大的拉应力。其结构简单，制造成本低，安装便捷，减小了预应力钢束数量，显著提高桥面板使用寿命，仅在辅助墩顶及中跨合拢处设置UHPC板，成本较低，具有良好的经济实用性和推广前景。
Method capable of reducing stress of auxiliary pier of double-tower composite beam cable-stayed bridge
The invention discloses a design method for solving the problem of overlarge tensile stress of a bridge deck at the top of an auxiliary pier of a double-tower steel-concrete composite beam cable-stayed bridge, a prefabricated UHPC (ultra-high performance concrete) plate is adopted at the top of the auxiliary pier, and the ultrahigh tensile capacity of the UHPC plate is used for bearing the large tensile stress of the bridge deck at the top of the auxiliary pier. The structure is simple, the manufacturing cost is low, installation is convenient and fast, the number of prestressed steel beams is reduced, the service life of the bridge deck slab is remarkably prolonged, only the UHPC plates are arranged at the auxiliary pier top and the midspan closure position, the cost is low, and good economic practicability and popularization prospects are achieved.
本发明公开了一种用于解决双塔钢混结合梁斜拉桥辅助墩顶处桥面板拉应力过大的设计方法，在辅助墩顶采用预制UHPC（超高性能混凝土）板，用UHPC板的超高抗拉能力来承受辅助墩顶桥面板较大的拉应力。其结构简单，制造成本低，安装便捷，减小了预应力钢束数量，显著提高桥面板使用寿命，仅在辅助墩顶及中跨合拢处设置UHPC板，成本较低，具有良好的经济实用性和推广前景。
Method capable of reducing stress of auxiliary pier of double-tower composite beam cable-stayed bridge
一种能减少双塔结合梁斜拉桥辅助墩应力的方法
ZHOU XIAO (author) / LAN XIANLIN (author) / XU XIANGDONG (author) / DU BIN (author) / TANG ZHI (author) / ZHAO ZHENYU (author) / WU WEIYI (author) / LU YU (author) / LIAO BIN (author) / HUANG TING (author)
2021-06-11
Patent
Electronic Resource
Chinese
IPC:
E01D
BRIDGES
,
Brücken
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