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| 超大跨度悬索桥的动力特性及地震反应分析 | |
| 引用本文： | 丰硕,项贻强,谢旭. 超大跨度悬索桥的动力特性及地震反应分析[J]. 公路交通科技, 2005, 22(8): 31-35 |
| 作者姓名： | 丰硕 项贻强 谢旭 |
| 作者单位： | 1. 深圳高速公路股份有限公司,广东,深圳,518000 2. 浙江大学交通工程研究所,浙江,杭州,310027 |
| 摘 要： | 以构想中的1座主跨跨度达3000m的悬索桥为研究对象,建立了空间有限元模型,推导了基于大质量法的多支承激励运动方程,在此基础上研究了该桥的动力特性和非线性多支承激励地震响应,探讨了桩-土-结构相互作用、行波效应对超大跨度悬索桥地震反应的影响,综合评价了该桥的抗震性能。 |
| 关 键 词： | 超大跨度 悬索桥 动力特性 多支承激励 行波效应 |
| 文章编号： | 1002-0268(2005)08-0031-05 |
| 收稿时间： | 2004-06-01 |
| 修稿时间： | 2004-06-01 |
Dynamic Characteristics and Multi-support Seismic Response Analysis of a Super-large-span Suspension Bridge |
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| FENG Shuo,XIANG Yi-qiang,XIE Xu. Dynamic Characteristics and Multi-support Seismic Response Analysis of a Super-large-span Suspension Bridge[J]. Journal of Highway and Transportation Research and Development, 2005, 22(8): 31-35 | |
| Authors: | FENG Shuo XIANG Yi-qiang XIE Xu |
| Abstract: | This paper established a dynamic model and equation of dynamic equilibrium of multisupport excitations for a superlargespan suspension bridge based on the Large Mass Method and the PseudoStatic Displacement Conception.Based on these,the dynamic characteristics and the multisupport excitations seismic response of the bridge are studied by probing into the soil foundation structure interaction effect and the wave passage effect on the seismic response.The numerical result indicates that rational modeling of the boundary condition can greatly affect the analysis result,the dynamic and seismic performance of this bridge is generally evaluated. |
| Keywords: | Super-large-span Suspension bridge Dynamic characteristic Multi-support excitation Wave passage effect |
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