| 采用人工地震波对大跨度刚构桥的地震响应分析 |
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| 引用本文： | 龚云康,钟铁毅,顾正伟,杨海洋. 采用人工地震波对大跨度刚构桥的地震响应分析[J]. 中国安全科学学报, 2011, 21(12) |
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| 作者姓名： | 龚云康 钟铁毅 顾正伟 杨海洋 |
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| 作者单位： | 北京交通大学土木建筑工程学院,北京,100044 |
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| 摘 要： | 为获得大跨度刚构桥在多维多点地震激励下的响应特征,基于功率谱模型合成了满足给定相关函数的多维多点人工地震波。采用有限元软件SAP2000分别在线性与非线性领域对某大跨度刚构桥进行计算分析,研究刚构桥在多维多点地震下的响应特点。结果表明,多点激励下刚构桥主梁的横向弯矩往往较一致激励下的大;考虑非线性特性后,刚构桥在三向地震作用下的响应并不等于单向地震响应的简单叠加,且刚构桥的墩顶比墩底部位更易形成塑性铰,建议在实际工程中重视刚构桥墩顶部位的延性设计。
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| 关 键 词： | 刚构桥 功率谱 多维多点 人工地震波 塑性铰 |
Analysis of Seismic Response of Long-span Rigid Frame Bridge Using Artificial Seismic Waves |
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| GONG Yun-kang , ZHONG Tie-yi , GU Zheng-wei , YANG Hai-yang. Analysis of Seismic Response of Long-span Rigid Frame Bridge Using Artificial Seismic Waves[J]. China Safety Science Journal, 2011, 21(12) |
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| Authors: | GONG Yun-kang ZHONG Tie-yi GU Zheng-wei YANG Hai-yang |
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| Affiliation: | GONG Yun-kang ZHONG Tie-yi GU Zheng-wei YANG Hai-yang(School of Civil Engineering and Architecture,Beijing Jiaotong University,Beijing 100044,China) |
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| Abstract: | In order to obtain response characteristics of rigid frame bridge in the case of multi-dimensional and multi-support excitations,based on power spectral model,multi-dimensional and multi-point artificial seismic waves meeting the given correlation function were generated.Then,a large-span rigid frame bridge was analyzed with finite element software SAP2000 both in the linear and nonlinear area,and response characteristics of rigid frame bridge under the multi-dimensional and multi-support earthquake were st... |
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| Keywords: | rigid frame bridge power spectra multi-dimension and multi-support artificial seismic wave plastic hinge |
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