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| 平面偏心结构的三维能力谱方法 | |
| 引用本文： | 李宁,翟长海,谢礼立. 平面偏心结构的三维能力谱方法[J]. 计算力学学报, 2011, 28(1): 113-118 |
| 作者姓名： | 李宁 翟长海 谢礼立 |
| 作者单位： | 1. 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,300072 2. 哈尔滨工业大学,土木学院,哈尔滨,150090 3. 哈尔滨工业大学,土木学院,哈尔滨,150090;中国地震局,工程力学研究所,哈尔滨,150080 |
| 基金项目： | 国家自然科学基金(51008208,90815014,90715021)资助项目. |
| 摘 要： | 基于单自由度模型的性态评估方法,无法考虑偏心结构平扭耦联效应且不便于考虑双向地震动输入,存在很大的局限性.本文在对水平偏心结构模态分析的基础上,利用OpenSees构建等效三自由度模型(ETDOF),将该模型用于双向地震动作用下偏心结构平扭耦联简化计算和性态评估.在对ETDOF模型进行振动特性分析的基础上,基于等位移原... |
| 关 键 词： | 扭转反应 能力谱法 静力非线性分析 性态评估 模态Pushover |
| 收稿时间： | 2009-05-06 |
| 修稿时间： | 2009-12-10 |
A three dimensional capacity spectrum method for plan-asymmetric structures |
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| LI Ning,ZHAI Chang-hai and XIE Li-li. A three dimensional capacity spectrum method for plan-asymmetric structures[J]. Chinese Journal of Computational Mechanics, 2011, 28(1): 113-118 | |
| Authors: | LI Ning ZHAI Chang-hai XIE Li-li |
| Affiliation: | School of Civil Engineering, Key Laboratory of Coast Civil Structure Safety, Ministry of Education, Tianjin University, Tianjin 300072, China;Department of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;Department of Civil Engineering, Harbin Institute of Technology, Harbin 150090, China;Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China |
| Abstract: | At present, the simplified methods for evaluating the structural performance are mostly based on the single degree of freedom system (SDOF), which is not adequate for the asymmetric structures considering the spatial coupled effects and the multi-dimensional ground motions. Considering the plan-asymmetric and coupled characteristics of structures, a modal equivalent triple-degrees of freedom (ETDOF) system is established. Then a three dimensional capacity spectrum method (3D-CSM) is developed based on the equivalent displacement rule. In order to verify the method, an asymmetric steel frame structure is applied with nonlinear time history analysis and 3D-CSM. The results show that the 3D-CSM is reliable and effective for evaluating the seismic response of plan-asymmetric structures. |
| Keywords: | rotational response capacity spectrum method nonlinear static analysis performance estimation modal pushover |
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