Y形高强钢组合偏心支撑框架结构抗震性能简化分析方法研究

发布时间：2018-01-14 23:32

本文关键词：Y形高强钢组合偏心支撑框架结构抗震性能简化分析方法研究　出处：《振动与冲击》2017年09期 　论文类型：期刊论文

【摘要】：通过对1∶2缩尺三层Y形高强钢组合偏心支撑框架结构(Y-HSS-EBF)模型试件的振动台试验,考察了结构的抗震性能。基于结构的恢复力模型与等代拉杆简化模型,采用SAP2000程序中的多线段塑性Kinematic连接单元代替拉杆,进行Y-HSS-EBF结构的地震反应简化分析,并将简化分析计算结果与试验结果、有限元计算结果进行了对比。研究结果表明:Y-HSS-EBF结构具有良好的抗震性能;由简化计算方法得到的Y-HSS-EBF结构滞回曲线与试验结果基本一致,简化分析模型能较好地模拟结构的非线性性能;振动台模型的简化计算结果具有一定的精度,简化分析模型能够较好的用于Y-HSS-EBF结构的弹性与弹塑性地震反应分析。在初步设计时,可采用简化分析模型对结构地震作用进行计算。
[Abstract]:The shaking table test of Y-HSS-EBF model specimen of 1: 2 scale three-story Y-shaped high strength steel composite eccentrically braced frame structure is carried out. The seismic behavior of the structure is investigated. Based on the restoring force model of the structure and the simplified model of the equivalent tensile rod, the plastic Kinematic connection element of multiple line segments in SAP2000 program is used to replace the tension bar. The simplified analysis of seismic response of Y-HSS-EBF structure is carried out, and the results of simplified analysis and test are given. The results of finite element analysis show that the structure has good seismic performance. The hysteretic curve of Y-HSS-EBF structure obtained by simplified calculation method is basically consistent with the experimental results, and the simplified analytical model can well simulate the nonlinear performance of the structure. The simplified calculation results of the shaking table model have certain accuracy. The simplified analysis model can be used for the elastic and elastoplastic seismic response analysis of Y-HSS-EBF structures. The simplified analysis model can be used to calculate the seismic action of the structure.
【作者单位】：西安建筑科技大学土木工程学院;西安建筑科技大学材料科学与工程博士后流动站;
【基金】：国家自然科学基金(51178382) “十二五”科技支撑计划项目(2013BAJ10B03-0)
【分类号】：TU323.5;TU352.11
【正文快照】： 偏心支撑框架结构结合了中心支撑框架结构的刚度和框架结构的延性,结构利用耗能梁段的塑性变形耗散地震能量。国内外学者的研究结果表明,偏心支撑框架结构是一种良好抗震结构体系[1-5]。偏心支撑框架结构在设计时可根据结构的高度、跨度和结构布置选择合适的耗能梁段和偏心支

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