| 大刚度法在结构动力分析中的应用、误差分析与改进 |
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| 引用本文： | 周国良,李小军,刘必灯,彭小波,迟明杰. 大刚度法在结构动力分析中的应用、误差分析与改进[J]. 工程力学, 2011, 0(8): 30-36,44 |
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| 作者姓名： | 周国良 李小军 刘必灯 彭小波 迟明杰 |
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| 作者单位： | 环境保护部核与辐射安全中心;中国地震局工程力学研究所;中国地震局地球物理研究所; |
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| 基金项目： | 国家自然科学基金项目(50708100); 中国地震局工程力学所基本科研业务费专项项目(2010B07,2007B02); 国家科技支撑计划项目(2006BAC13B02) |
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| 摘 要： | 为检验大刚度法（LSM）的计算精度，以2自由度有限元模型为例，采用瑞利阻尼假设，分别基于一致激励和多点激励情形，输入4组地震动位移，分析了结构的地震反应并与传统理论方法结果做了对比。从理论上分析了LSM误差产生的原因，指出了它的适用条件，分别提出了适用于一致激励和多点激励的改进方法——基于地震动位移阻尼项修正的改进LS...
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| 关 键 词： | 一致激励 多点激励 大刚度法 地震反应 误差分析 修正措施 |
ERROR ANALYSIS AND IMPROVEMENTS OF LARGE SPRING/STIFFNESS METHOD FOR STRUCTURAL DYNAMIC RESPONSE ANALYSIS |
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| ZHOU Guo-liang,,LI Xiao-jun,LIU Bi-deng,PENG Xiao-bo,CHI Ming-jie. ERROR ANALYSIS AND IMPROVEMENTS OF LARGE SPRING/STIFFNESS METHOD FOR STRUCTURAL DYNAMIC RESPONSE ANALYSIS[J]. Engineering Mechanics, 2011, 0(8): 30-36,44 |
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| Authors: | ZHOU Guo-liang LI Xiao-jun LIU Bi-deng PENG Xiao-bo CHI Ming-jie |
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| Affiliation: | ZHOU Guo-liang1,2,LI Xiao-jun3,LIU Bi-deng2,PENG Xiao-bo2,CHI Ming-jie3(1.Nuclear and Radiation Safety Centre,Ministry of Environment Protection of China,Beijing 100082,China,2.Institute of Engineering Mechanics,China Earthquake Administration,Harbin 150080,3.Institute of Geophysics,Beijing 100080,China) |
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| Abstract: | To verify the practical applicability and accuracy of the large spring/stiffness method(LSM),the dynamic responses of a two-degree-freedom(2DOF) finite element model using the Rayleigh damping assumption are performed respectively according to the LSM and traditional theoretical methods under four groups of seismic ground motion excitations.The origin of errors and the applicability of the LSM are discussed.Then the improved LSM application to a uniform excitation and a non-uniform excitation are respective... |
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| Keywords: | uniform excitation non-uniform excitation Large Spring/Stiffness Method seismic response error analysis improvements |
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