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多支承激励下自锚式悬索桥空间地震反应分析
Spatial seismic response analysis of self-anchored suspension bridges subjected to multiple-support excitations
【摘要】 基于随机振动理论,考虑了地震动空间效应,对一座主跨240米自锚式混凝土悬索桥在多支承激励下进行了地震反应分析,以及在地震波的三向正交分量独立作用和联合作用下的地震反应进行了数值计算,探讨了行波效应和部分相干效应对自锚式悬索桥地震反应的影响.
【Abstract】 Based on random vibration theory, by taking into account the seismic action with spatial variation, the earthquake response of a self-anchored suspension bridge with center span of 240m to multiple-support excitations is investigated, and numerical calculation is presented for seismic response subjected to independent effect or combination effect of three orthogonal components of seismic wave. The seismic response of self-anchored suspension bridge by considering traveling effect and correlated effect is discussed in detail.
【关键词】 多支承激励;
自锚式悬索桥;
地震反应;
【Key words】 multiple-support excitations; self-anchored suspension bridge; earthquake response;
【Key words】 multiple-support excitations; self-anchored suspension bridge; earthquake response;
- 【文献出处】 哈尔滨工业大学学报 ,Journal of Harbin Institute of Technology , 编辑部邮箱 ,2004年11期
- 【分类号】U442.55
- 【被引频次】23
- 【下载频次】277