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叠层橡胶垫与RC柱串联隔震体系的随机屈曲分析 被引量:4

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摘要 悬臂柱与橡胶隔震支座组成的串联隔震系统是国内外很常见的建筑隔震体系,其稳定性受到工程设计和研究人员的广泛关注。由于地震激励的随机性,悬臂柱的刚度不但会通过串联隔震体系的频率响应函数影响结构体系的随机响应特性,而且隔震层顶部的水平位移、水平剪力及竖向屈曲临界荷载三者都受这组随机响应的支配,并有明显的交互作用。本文介绍了笔者所提出的串联隔震结构在地震激励作用下的随机屈曲响应所做的理论模型。针对串联隔震体系的特点,对串联体系的屈曲特性进行了定量分析,分别建立了分析串联隔震体系频率成份和最大层间剪力、最大隔震层位移随机响应的非线性滞变模型,分析了单柱串联体系的屈曲荷载及两种失效准则对应于屈曲分析的工程意义,提出了体现II型失稳特性主要影响因素的屈曲临界荷载均值表达式。
作者 杜永峰 李慧
出处 《防灾减灾工程学报》 CSCD 2010年第S1期16-21,共6页 Journal of Disaster Prevention and Mitigation Engineering
基金 国家自然科学基金项目(50778087) 甘肃省科技支撑计划项目(090-GKCA040)资助
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