| 近断层地震动速度脉冲之桥梁地震反应敏感参数分析 |
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| 引用本文： | 李新乐,窦慧娟,孙建刚.近断层地震动速度脉冲之桥梁地震反应敏感参数分析[J].大连民族学院学报,2008,10(3):261-265. |
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| 作者姓名： | 李新乐 窦慧娟 孙建刚 |
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| 作者单位： | 1. 大连理工大学,土木水利学院,辽宁,大连,116024;大连民族学院,土木建筑工程学院辽宁,大连,116605
2. 大连民族学院,土木建筑工程学院辽宁,大连,116605 |
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| 基金项目： | 大连民族学院校科研和教改项目 |
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| 摘 要： | 研究并确定近断层地震作用下桥梁地震反应的速度脉冲敏感参数是结构抗震设计的关键。基于距离发震断层15km范围内的164条脉冲型近断层地震记录，采用数理统计分析方法，给出了建议的脉冲模型及其参数估计式。通过与实际记录时程和SDOF结构地震反应进行比较，说明了建议脉冲模型的合理性。通过建立空间桥梁结构模型，采用非线性有限元方法，计算分析了脉冲参数对桥梁结构地震反应的影响，确定了影响地震反应的脉冲敏感参数。
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| 关 键 词： | 近断层地震动 速度脉冲模型 地震反应 敏感参数 |
Sensitivity Parameters Analysis of Bridge Seismic Response for Near-Fault Simple Velocity Pulse Ground Motion |
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| LI Xin-le,DOU Hui-juan,SUN Jian-gang.Sensitivity Parameters Analysis of Bridge Seismic Response for Near-Fault Simple Velocity Pulse Ground Motion[J].Journal of Dalian Nationalities University,2008,10(3):261-265. |
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| Authors: | LI Xin-le DOU Hui-juan SUN Jian-gang |
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| Institution: | LI Xin- le, DOU Hui -juan, SUN Jian- gang ( School of Civil and Hydraulic Engineering, Dalian University of Technology, Dalian Liaoning 116024, China; College of Architecture Civil Engineering,Dalian Nationalities University, Dalian Liaoning 116605, China) |
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| Abstract: | The sensitivity parameters of near-fault pulse-type motions are an essential foundation for structural seismic design subject to near-fault earthquake.Based on selected 164 near-fault earthquake records within 15km of fault projective distance,the proposed pulse model and estimated expressions of its parameters have been derived with the mathematics statistic analysis method.Comparing the time-history curve and the seismic response of SDOF structures for the near-fault ground motion and simulated pulse motion,the proposed velocity pulse model is reasonable.Using the proposed velocity pulse model,the finite element model of bridge was established,The influential parameters of velocity pulse on the seismic response of bridge were analyzed,and the important parameters of pulse model are given. |
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| Keywords: | near-fault ground motions velocity pulse model seismic response sensitivity parameters |
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