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地震作用下某斜拉桥抗震性能研究 预览

Study on earthquake resistant performance of a cable-stayed bridge
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摘要 为探讨地震作用下大跨度斜拉桥的抗震性能,本文以丹佛联络线北江特大桥为研究对象,建立了空间动力计算模型,通过反应谱法和非线性时程分析方法对其抗震性能进行研究。结果表明:索塔各截面配筋可以满足多遇地震及罕遇地震的抗震性能目标,阻尼器在地震荷载作用下作为非线性构件可以起到耗能作用并显著改变结构的地震响应,并给出了本桥推荐阻尼器参数。 In order to study the seismic performance of long-span cable-stayed bridge under earthquake action, this paper takes beijiang bridge of Denver tie line as the research object. Case studies establish the space dynamic calculation model, and analysis its seismic performance by response spectrum method and nonlinear time-history method. The results show that the reinforcement of each section of cable tower can meet the seismic performance target of frequent and rare earthquake. As a nonlinear component, the damper can dissipate energy and significantly change the seismic response of the structure under seismic load, and the parameters of the proposed damper are presented.
作者 曹阳梅 CAO Yangmei(China Railway SIYUAN Survey and Design Group Co.,Ltd. Wuhan,430063)
出处 《铁道勘测与设计》 2019年第4期60-64,共5页 RAILWAY SURVEY AND DESIGN
关键词 斜拉桥 反应谱法 时程法 阻尼器 Cable-stayed bridge Response spectrum method Time history method Damper
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