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钢筋混凝土框架结构侧向倒塌地震易损性分析
Lateral seismic collapse fragility analysis of RC frame structures
【摘要】 为研究钢筋混凝土框架结构在地震作用下的侧向倒塌易损性,采用多地震动增量动力分析方法,用FEMA准则和结构有限元计算失稳作为结构侧向倒塌能力点的确定准则,分析得到一栋5层3跨钢筋混凝土框架结构的侧向倒塌易损性曲线.结果表明:FEMA准则对结构侧向倒塌定义偏于保守.在大震作用下,结构倒塌风险较小.
【Abstract】 To study the lateral seismic collapse fragility of RC frame structures,multi-record incremental dynamic analysis method is utilized to get the lateral seismic collapse fragility curves of a three-bay and five-storey RC frame building,in which the FEMA-rule and computational non-convergence are taken as a rule of lateral collapse of structures.The results demonstrate that the FEMA-rule is conservative to determine lateral collapse.Under the major earthquake,the structural collapse risk is limited.
【关键词】 地震易损性;
侧向倒塌;
倒塌易损性;
增量动力分析;
【Key words】 seismic fragility; lateral collapse; collapse fragility; incremental dynamic analysis;
【Key words】 seismic fragility; lateral collapse; collapse fragility; incremental dynamic analysis;
【基金】 国家自然科学基金重大研究计划(90715021),国家自然科学基金资助项目(50978080);地震行业科研专项基金资助项目(200808073)
- 【文献出处】 哈尔滨工业大学学报 ,Journal of Harbin Institute of Technology , 编辑部邮箱 ,2011年06期
- 【分类号】TU375.4;TU311.3
- 【被引频次】59
- 【下载频次】935