桥上人行桥对大跨度系杆拱桥抗震性能影响研究

摘要:

大跨度拱桥上设置人行桥结构新颖,探明人行桥对下承式系杆拱桥抗震性能的影响有重要意义。以深圳市某下承式系杆拱桥为研究对象,通过动力时程方法分析成桥阶段是否设置人行桥对全桥抗震性能的影响。研究表明：设置人行桥降低了纵竖向地震作用下桥上拱肋和吊杆的应力,增加了横竖向地震作用下桥上拱肋和吊杆的应力,对于桩基础影响不大。

Abstract:

Research On The Seismic Performance Influence Of Two-story Corridor On The Long-span Tied Arch Bridge ZHOU Hao (Shanghai Municipal Engineering Design General Institute（Group） Co., LTD），Shanghai 200092，China) The two-story corridor of long-span arch bridge has a great impact on the seismic resistance of the bridge. Taking a tied arch bridge in Shenzhen as the research object, the influence of whether two-story corridor is set on the seismic performance of the whole bridge is analyzed by dynamic time history method. The research shows that the setting of two-story corridor can reduce the arch stress and rod stress under longitudinal and vertical earthquake, and increase the stress of arch stress and rod stress under transverse and vertical earthquake, which has little effect on pile foundation. Keywords：Through tied arch bridge；simulation model；Dynamic Time-history；Seismic analysis