| 天津永和桥地震反应的非线性效应分析 |
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| 引用本文： | 陈幼平,周宏业. 天津永和桥地震反应的非线性效应分析[J]. 土木工程学报, 1997, 0(3) |
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| 作者姓名： | 陈幼平 周宏业 |
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| 作者单位： | 铁道部科学研究院(陈幼平)，铁道部科学研究院(周宏业) |
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| 摘 要： | 本文介绍了目前斜拉桥非线性地震反应的研究现状,利用MSC/NASTRAN的非线性分析计算方法对天津永和斜拉桥结构的几何大变形非线性影响、抗震支座(拉索、挡块)的非线性影响、拉索预张拉影响以及重力-水平位移相互作用的非线性影响进行了数值分析和讨论.
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| 关 键 词： | 斜拉桥 地震反应 非线性 减震设施 预张拉 重力-水平位移互相作用 |
NQNLJNEAR EARTHQUAKE RESPONSE ANALYSIS OF TIANJIN YONGHE GABLE-STAYED BRIDGE |
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| Chen Youping Zhou Hongye. NQNLJNEAR EARTHQUAKE RESPONSE ANALYSIS OF TIANJIN YONGHE GABLE-STAYED BRIDGE[J]. China Civil Engineering Journal, 1997, 0(3) |
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| Authors: | Chen Youping Zhou Hongye |
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| Affiliation: | China Academy of Railway Sciences |
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| Abstract: | Different sources of nonlinearity for cable stayed bridges are investigated. Nonlinearities can be due to:(1)changes of geometry of the whole bridges owing to its large displacement and large rotation, ( 2 ) axial force and bending moment interaction, ( 3 ) effects of cables caused by pretentioning, ( 4 ) dynamic interaction of gravity and horizontal displacement, ( 5 ) some seismic mitigating devices. The effects of each above mentioned nonlinearity on the seismic behaviour of Tianjin Yonghe cable-stayed bridge are studied in this paper by using MSC/NASTRAN. Many important conclusions are obtained. |
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| Keywords: | cable-stayed bridges earthquake response nonlinearity seismic mitigating devices pretensioning dynamic interaction of gravity and horizontal displacement MSC/NASTRAN. |
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