方钢管混凝土柱-钢梁平面框架抗震性能试验研究  

Experimental research on seismic behavior of concrete filled square steel tube columns and steel beam planar frames

作　　者：王先铁[1,2] 郝际平[1] 周观根 马尤苏夫 樊春雷[1] 

机构地区：[1]西安建筑科技大学土木工程学院,陕西西安710055 [2]浙江东南网架集团有限公司,浙江杭州311209

出　　处：《建筑结构学报》2010年第8期8-14,共7页Journal of Building Structures

基　　金：中国博士后科学基金项目(20080431230);陕西省教育厅专项科研项目(08JK336);陕西省重点学科建设专项资金项目(E01001;E01003);陕西省自然科学基金项目(2010JQ7001)

摘　　要：进行了3榀方钢管混凝土柱-钢梁平面框架的低周反复加载试验,分析了轴压比和梁柱线刚度比对框架抗震性能的影响。得到了框架的荷载-位移滞回曲线、骨架曲线及各阶段的荷载和位移值,分析了框架的破坏特征、延性、耗能能力、承载能力及刚度退化。试验结果表明:框架滞回曲线饱满,具有良好的变形性能和耗能能力;增大轴压比将降低框架的延性和水平极限承载力,提高框架的耗能能力;增大梁柱线刚度比将降低框架的延性和耗能能力,提高框架的水平极限承载力。试验结果可为方钢管混凝土柱-钢梁框架的工程应用提供参考。A total of 3 pseudo-static experiments were conducted for three planar experimental specimens. The influence of axial load ratio and linear stiffness ratio of steel beam to column on the frame seismic behavior was investigated. The toad-displacement hysteretie loops, skeleton curves and the load and displacement values for different loading stages were obtained. The failure characteristics, ductility, energy dissipation capacity, load carrying capacity and stiffness degeneration were studied. The experimental results show that the load-displacement hysteretic loops are stable, and the deformation properties and energy dissipation capacity are adequate. Increasing the axial load ratio decreases the frame ductility and lateral load ultimate capacity, but leads to higher energy dissipation capacity. With the increase of the linear stiffness ratio of steel beam to column, the ductility and energy dissipation capacity become low, but the lateral ultimate capacity becomes high. Test results provide a reference for the engineering application of concrete filled square steel tube columns and steel beam frames.

关 键 词：方钢管混凝土框架 伪静力试验 抗震性能 延性 耗能 

分 类 号：TU398.2[建筑科学—结构工程] TU528.59