| 土-结构体系的分枝模态与约束模态混合二步法 |
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| 引用本文： | 王菲,姜忻良.土-结构体系的分枝模态与约束模态混合二步法[J].地震工程与工程振动,2010,30(4). |
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| 作者姓名： | 王菲 姜忻良 |
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| 作者单位： | 天津大学,建筑工程学院/滨海土木工程结构与安全教育部重点实验室(天津大学),天津300072 |
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| 基金项目： | 国家自然科学基金重大研究计划项目，国家自然科学基金项目，天津市应用基础及前沿技术研究计划项目 |
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| 摘 要： | 为了在结构设计过程中考虑土-结构非线性相互作用的影响,在线性-非线性混合的约束模态法以及分枝模态法的基础上,提出了适用于土-结构非线性相互作用体系的分枝模态与约束模态的混合方法,该方法既可考虑土体和结构的非线性特性又便于考察土-结构相互作用对上部结构的影响。在分枝模态与约束模态混合方法的基础上,进一步提出了混合二步分析法,并将其应用到地基土-框架结构地震响应分析中,算例结果表明,混合二步分析法在实现上部结构和地基土分开计算的同时,还能够考虑结构与地基土的材料非线性特性,有利于采用专业设计软件仅通过对上部结构进行分析来考虑土-结构相互作用的影响,为实际工程计算考虑土-结构相互作用的影响提供了便利的条件。
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| 关 键 词： | 分枝模态法 约束模态法 混合二步分析法 土-结构相互作用体系 势能判据截断准则 非线性 |
Analysis of soil-structure interaction system based on mixed branch mode and constrained mode two-step method |
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| WANG Fei,JIANG Xinliang.Analysis of soil-structure interaction system based on mixed branch mode and constrained mode two-step method[J].Earthquake Engineering and Engineering Vibration,2010,30(4). |
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| Authors: | WANG Fei JIANG Xinliang |
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| Institution: | WANG Fei,JIANG Xinliang (School of Civil Engineering,Tianjin University/Key Laboratory of Coastal Civil Engineering Structure , Safety(Tianjin University),Ministry of Education,Tianjin 300072,China) |
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| Abstract: | In order to introduce the effect of nonlinear soil-structure interaction during the structure design process,based on the branch mode synthesis method and the mixed linear-nonlinear constrained mode synthesis method,the mixed branch mode and constrained mode method suitable for non-linear soil-structure interaction system is proposed.The material nonlinearity of structure and soil could be considered effectively by using this method,and it is easier to inspect the influence of soil-structure interaction on ... |
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| Keywords: | branch mode synthesis method constrained synthesis method mixed two-step method soil-structure interaction system mode cut-off criterion based on potential energy criterion nonlinear |
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