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钢支撑滞回模型及防倒塌加固效果分析
A Hysteretic Model of Conventional Steel Brace and Analysis on the Strengthening Effect of Collapse Prevention
【摘要】 提出了一个基于18参数的钢支撑滞回模型,可准确模拟普通钢支撑的滞回行为。以一典型RC框架教学楼的钢支撑加固为例,通过推覆分析和基于动力增量分析(IDA)的倒塌易损性分析,研究了普通钢支撑加固的效果。
【Abstract】 In this paper,a hysteretic model of conventional steel brace based on 18 parameters is put forward.The model could simulate the hysteretic behavior of conventional steel brace accurately.Then a typical RC frame that was closed to the epicenter and collapsed during Wenchuan Earthquake is analyzed.Push-over analysis and collapse fragility analysis based on incremental dynamic analysis are implemented to discuss the strengthening effect with steel braces.The result could be referred for the seismic collapse prevention design of RC frames.
【基金】 国家自然科学基金重点项目(90815025);国家科技支撑计划项目(2009BAJ28B01);工程院重大咨询项目(2010-ZD-4);“城市与工程安全减灾教育部重点实验室开放基金项目;北京市重点实验室开放基金项目”(EESR2010-03)
- 【文献出处】 工程抗震与加固改造 ,Earthquake Resistant Engineering and Retrofitting , 编辑部邮箱 ,2011年04期
- 【分类号】TU352.11
- 【被引频次】17
- 【下载频次】424