Y型偏心支撑加固震损RC框架的数值模拟  

Numerical simulation of seismic behavior of damaged RC frames retrofitted with Y-eccentrically brace

作　　者：顾建业[1] 于安林[1] 施宇[1] 

机构地区：[1]苏州科技学院江苏省结构工程重点试验室,江苏苏州215011

出　　处：《苏州科技学院学报（工程技术版）》2014年第2期32-35,共4页Journal of Suzhou University of Science and Technology （Engineering and Technology）

基　　金：国家自然科学基金项目(51078248)

摘　　要：为研究Y型偏心支撑加固震损RC框架的抗震性能,采用有限元程序ABAQUS对RCF-YB1试验试件进行了验证分析。在此基础上系统研究了耗能梁段腹板高度对Y型偏心支撑加固震损RC框架结构抗震性能的影响,重点对比分析了加固后试件的滞回曲线、水平承载力、抗侧刚度、累积滞回耗能。结果表明,针对中等程度损伤的RC框架,采用Y型偏心支撑加固后仍可获得较大的水平承载力和抗侧刚度。此外,Y型偏心支撑的耗能梁段对加固震损RC框架的抗震性能有较大影响,随着耗能梁段腹板高度的增加,试件的水平承载力、抗侧刚度、耗能均呈增大趋势。In order to investigate the seismic behavior of damaged RC frames retrofitted with Y-eccentrically brace, the test specimen, named RCF-YB1 in reference [1] was selected for a further FE analysis. The effect of the height of link web on the seismic behavior of damaged RC frames retrofitted with Y-eccentrically brace are investigated, including of the the height of link web. The hysteretic behavior, stiffness degradation, deformation and ductility, and energy dissipation are discussed. The results show that the moderate damaged RC frame retrofitted with Y-eccentrically braced can obtain the large strength and stiffness. With the increase of the height of energy dissipation link webs, the stiffness, lateral strength, and energy dissipation had increased of this retrofitted structure take on a increasing trend.

关 键 词：Y型偏心支撑 震损RC框架 腹板高度 有限元分析 

分 类 号：TU391[建筑科学—结构工程]