（1 江苏海洋大学土木与港海工程学院， 连云港 222005；2 江苏保利宁炫房地产开发有限公司， 南京 210000)

［摘要］角钢的受力性能对预应力自复位框架结构的抗震性能有着重要的影响，对角钢的受力性能进行了系统试验研究，共完成10组角钢的拟静力试验及2组角钢的单调加载试验。对试件的滞回曲线、骨架曲线、位移延性、耗能能力、残余变形等抗震性能进行了分析。结果表明：各试件的滞回曲线较为饱满，呈梭形；各试件的骨架曲线受角钢厚度ta、角钢长度la和螺栓位置lg等因素影响；试件的承载力随着ta，la的变大以及lg的减小而提高；角钢具有良好的耗能能力，试件的耗散能量大小随着ta，la的变大以及lg的减小而提高。对角钢的拟静力试验进行数值模拟，所得结果与试验结果吻合良好。

［关键词］角钢； 抗震性能； 拟静力试验； 滞回曲线； 残余变形； 刚度

中图分类号：TU391文献标识码：A文章编号：1002-848X(2020)11-0080-05

Research on quasi-static test of angle steel tensile and compression restoring force model

CAI Xiaoning1, WU Jiangchuan1, GONG Nina1, ZHANG Feng1, GUO Jiangpei1, ZHOU Yuling2

（1 School of Civil and Ocean Engineering, Jiangsu Ocean University, Lianyungang 222005， China；2 Jiangsu Baoli Ning Xuan Real Estate Development Co., Ltd., Nanjing 210000， China)

Abstract:The performance of angle steel has an important influence on the seismic performance of prestressed self-centering frame structure (PTED). The mechanical performance of the angle steel was systematically tested, and a total of 10 sets of angle steel quasi-static tests and 2 sets of angle steel monotonic loading tests were completed. Hysteresis curves, skeleton curves, displacement ductility, energy dissipation capacity and residual deformation were analyzed. The results show that the hysteresis curve of each specimen is full and fusiform. The skeleton curve of each specimen is affected by the thickness ta, the length la and the bolt position lg. The bearing capacity increases with the increase of the thickness ta and the length la and the decrease of the bolt position lg. Angle steel has a good energy-consuming ability. The energy dissipated increases with the increase of the thickness ta and the length la and the decrease of bolt position lg. The quasi-static tests were simulated numerically, and the results are in good agreement with the experimental results.

Keywords:angle steel; seismic performance; quasistatic test; hysteresis curve; residual deformation； stiffness

*国家自然科学基金资助（51508220,51878315），江苏省高校自然科学基金资助（16KJB570001，17KJB570001），江苏省建设系统科技项目(2017ZD098)。

作者简介：蔡小宁，博士，副教授，Email：fenyun0801@163.com。