| 三塔自锚式悬索桥动力特性及影响参数分析 |
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| 引用本文： | 房贞政,张超,陈永健.三塔自锚式悬索桥动力特性及影响参数分析[J].地震工程与工程振动,2010,30(4). |
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| 作者姓名： | 房贞政 张超 陈永健 |
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| 作者单位： | 福州大学土木工程学院,福建,福州,350108 |
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| 摘 要： | 以某三塔自锚式悬索桥为工程背景,建立三维有限元模型,通过调整缆索初应变确定恒载作用下的成桥线形,基于静力平衡状态进行模态分析得到三塔自锚式悬索桥的振型及频率。结构动力特性影响参数分析表明:主缆抗拉刚度、加劲梁竖向弯曲刚度、桥面恒载集度、矢跨比等参数对结构动力特性影响较大。
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| 关 键 词： | 三塔自锚式悬索桥 动力特性 参数分析 |
Dynamic characteristics analysis and parametric study of self-anchored suspension bridge with three towers |
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| FANG Zhenzheng,ZHANG Chao,CHEN Yongjian.Dynamic characteristics analysis and parametric study of self-anchored suspension bridge with three towers[J].Earthquake Engineering and Engineering Vibration,2010,30(4). |
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| Authors: | FANG Zhenzheng ZHANG Chao CHEN Yongjian |
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| Institution: | FANG Zhenzheng,ZHANG Chao,CHEN Yongjian(College of Civil Engineering,Fuzhou University,Fuzhou 350108,China) |
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| Abstract: | Based on a self-anchored suspension bridge with three towers,a 3D finited-element model is developed to establish its deformed equilibrium configuration due to dead loading.Starting from deformed configuration,a modal analysis is performed to provide the frequencies and mode shapes.Strutrural and material parametric studies show that: tension stiffness of cable,vertical bending stiffness of stringer,self-weight of deck and rise-span ratio play an important role in the dynamic characteristics of self-anchore... |
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| Keywords: | self-anchored suspension bridge with three towers dynamic characteristics parametric studies |
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