第 49卷第 6期
2017年 12月
西安建筑科技大学学报(自然科学版) J．Xi an Univ．of Arch．＆ Tech．(Natural Science Edition)
Vo1．49 NO．6
Dec．2O17
DOI：10．15986／j．1006—7930．2017．06．009
双 角 钢 组 合 截 面 构 件 在 往 复 弯 曲 下 的 恢 复 力 模 型 研 究
冉 红 东 ， 朱 兵 ， 赵 道 程 。， 弓 欢 学 ， 杨 靖
(1．西安建筑科技大学 土木工程学院，陕西西安 710055；2．中冶京诚工程技术有限公司，北京 100176
3．中冶建筑研究总院有限公司，北京 100088；4．西安鹏程爆破工程有限公司，陕西 西安710065)
摘要：为建立延性交错桁架钢框架结构双角钢组合截面弦杆在往复弯曲下的恢复力模型，对 6个双角钢组合截面足尺试件
进行了低周往复加载试验 ，研究了填板间距及加劲肋布置对构件滞回性能的影响．通过对试验数据的回归分析 ，得到了试
件的骨架曲线及刚度退化规律，确定了双角钢组合截面弦杆的恢复力模型，其骨架曲线为弹性阶段、强化阶段和承载力退
化阶段组成的三折线模型．最后 ，进行了计算骨架曲线、恢复力模型与试验骨架曲线、滞回曲线的对比分析，结果吻合较
好．计算结果表明，提出的恢复力模型可以良好的表达延性交错桁架钢框架结构双角钢组合截面弦杆的承载力和刚度退化
等特征 ，可为结构的非线性动力分析提供参考．
关键词 ：延性交错桁架钢框架结构；双角钢组合截面；往复弯曲；骨架曲线 ；恢复力模型
中图分类号：TU391 文献标志码：A 文章编号：1006-7930(2017)06—0827—08
Study on restoring force m odel of double。。angle built_。up
m em bers under cyclic bending
RAN Hongdong ，ZHU Bing ，ZHAO Daocheng。，GONG Huanxue ，YANG Jing
(1．School of Civil Engineering，Xi an Univ．of Arch．& Tech．，Xi an 710055，China；
2．Capital Engineering& Research Incorporation Ltd，Beijing 100176，China；
3．Central Research Institute of Building and Construction of China Metallurgical Group Corporation，Beijing 100088，China；
4．Xi an Pengcheng Blasting Engineering Co．Ltd，Xi an 710065，China)
Abstract：To establish the restoring force model of double—angle built—up chords under cyclic bending in special
staggered truss steel frame structure，six full—size double—angle built—up specimens were tested under cyclic
bending，and the influence of the stitch spacing and stiffeners settings on the hysteretic behavior of the specimens
were studied．Through analysis of test dates，the skeleton curve and rigidity degradation rule of the specimens were
obtained and the restoring force models were determined as wel1．The three—liner skeleton curve of the restoring
force was composed of the elastic stage，the reinforcement stage as well as bearing-degradation stage．Finally，the
calculating skeleton curve and the restoring force model with the test skeleton curve and hysteretic curve were
compared．The calculating model showed good agreement with the test curve．It showed that the calculating
restoring force model can well express the bearing——capacity and rigidity degradation characteristics of the double。-
angle built—up chords in special staggered truss steel frame structure and can offer reference for the nonlinear
dynamic analysis of th
双角钢组合截面构件在往复弯曲下的恢复力模型研究（论文）.pdf
