| 双向地震下刚度偏心体系的弹塑性反应谱研究 |
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| 引用本文： | 王丰,武志东.双向地震下刚度偏心体系的弹塑性反应谱研究[J].大连民族学院学报,2012,14(3):256-259. |
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| 作者姓名： | 王丰 武志东 |
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| 作者单位： | 大连民族学院 |
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| 基金项目： | 国家自然科学基金项目，中央高校基本科研业务费专项资金资助项目，辽宁省教育厅高等学校科研项目计划，住房和城乡建设部科技项目，大连民族学院人才启动基金资助项目 |
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| 摘 要： | 针对实际地震动的多维性、偏心引起结构多分量反应的耦合作用以及结构非线性的空间耦合特性，建立了可考虑刚度偏心影响的单层体系弹塑性等延性拟强度折减系数谱。通过对硬、中、软三类场地60条地震动记录进行时程计算的结果，分析了不同场地类型、相对偏心距、扭转频率比等因素对拟强度折减系数谱的影响，为进一步建立可应用于工程实际的多维弹塑性设计谱奠定基础。
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| 关 键 词： | 双向地震作用 弹塑性反应谱 刚度偏心 强度折减系数 Bi-directional ground motions Inelastic response spectra Stiffness asymmetric Strength reduction factor |
Study on Inelastic Response Spectra for Stiffness Asymmetric Systems Subjected to Bi- directional Ground Motions |
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| WANG Feng,WU Zhi-dong.Study on Inelastic Response Spectra for Stiffness Asymmetric Systems Subjected to Bi- directional Ground Motions[J].Journal of Dalian Nationalities University,2012,14(3):256-259. |
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| Authors: | WANG Feng WU Zhi-dong |
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| Institution: | WANG Feng, WU Zhi - dong ( College of Architecture ＆ Civil Engineering , Dalian Nationalities University, Dalian Liaoning 116605, China, ) |
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| Abstract: | The strength reduction factor spectra of constant ductility factors for one - storey asymmetric plan system is presented considering the characters of multi - dimensional response of structures, torsion coupling response of structures and nonlinear spatial coupling of structural multi - components. The effects of normalized stiffness eccentricity, rotation frequency ratio for spectra amplitude on strength reduction factors are discussed based on statistic analysis of 60 recordings in two directions for hard site, medium site and soft site, which is the base for further forming the inelastic design response spectra of asymmetric systems in engineering application. |
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| Keywords: | hi -directional ground motions inelastic response spectra stiffness asymmetric strength reduction factor |
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