| 桥梁的多点激振效应和非线性作用 |
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| 引用本文： | 刘保纲,郭咏辉.桥梁的多点激振效应和非线性作用[J].地震研究,2002,25(1):62-67. |
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| 作者姓名： | 刘保纲 郭咏辉 |
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| 作者单位： | 1. 郑州铁路局,河南,郑州,450052
2. 郑州市政设计院.河南,郑州,450052 |
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| 摘 要： | 推导了考虑大应变大位移的几何非线性有限元列式。通过影响矩阵讨论桥梁在多点激振下的非线性地震响应，并用算例比较一致输入和多点激振下的线性和非线性响应，讨论地震动输入方式和结构参数对地震响应的影响。由分析结果可知非线性和多点激振对结构响应影响较大，多点激振的影响随结构形式和尺寸的不同而不同。
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| 关 键 词： | 多点激振 非线性 影响矩阵 桥梁 地震响应 抗震设计 |
Nonlinear Response Analysis of Bridges under Multi - support Excitation |
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| Liu Baogang Guo Yonghui Zhengzhou Reilway Bereau,Zhengzhou ,China Zhengzhou Municipal Works Design Institute,Zhengzhou ,China.Nonlinear Response Analysis of Bridges under Multi - support Excitation[J].Journal of Seismological Research,2002,25(1):62-67. |
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| Authors: | Liu Baogang Guo Yonghui Zhengzhou Reilway Bereau Zhengzhou China Zhengzhou Municipal Works Design Institute Zhengzhou China |
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| Institution: | Liu Baogang 1) Guo Yonghui 2) 1)Zhengzhou Reilway Bereau,Zhengzhou 450052,China 2)Zhengzhou Municipal Works Design Institute,Zhengzhou 450052,China |
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| Abstract: | The geometric nonlinear finite element formulation is derived,including large strain and large displacement.By using the effect matrix,the nonlinear earthquake response of bridges under multi-support excitation is discussed in this paper.Furthermore,the numerical test is given under four cases,linear and nonlinear respondences under consistent or multi-support excitations.The effect of input form of earthquake and parameters of structures on the the respondence are discussed.It can be concluded that the effect of nonlinear and multi-support excitation is significant and the respondence of the bridge under multi-support excitation can be changed greatly with different structural forms and dimensions. |
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| Keywords: | Multi-support excitation non-linearity effect matrix |
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