基于OpenSEES的圆钢管与螺栓球组配件的抗震性能研究  

Research on the Seismic Performance of Round Steel Pipe and Bolt Ball Group Fittings Based on OpenSEES

作　　者：宋夏芸 李卫文 张洁 杜雷鸣[1] 李海旺 SONG Xia-yun;LI Wei-wen;ZHANG Jie;DU Lei-ming;LI Hai-wang(Shanxi Engineering Vocational College,Taiyuan,Shanxi,030009,China;College of Civil Engineering,Taiyuan University of Technology,Taiyuan,Shanxi,030024,China)

机构地区：[1]山西工程职业学院,山西太原030009 [2]太原理工大学土木工程学院,山西太原030024

出　　处：《建材技术与应用》2024年第2期22-26,共5页Research and Application of Building Materials

基　　金：山西省基础研究计划自由探索类青年科学研究项目(202203021222335);河南省科技攻关资助项目(222102320106)。

摘　　要：空间网格结构的超低周疲劳破坏隐患直接威胁着强震时数以万计的该类建筑安全性能。基于OpenSEES有限元分析软件,针对12根两端带螺栓球节点的钢管在大位移循环加载试验下的超低周疲劳性能进行数值模拟,分析得出计及节点影响、杆件双重非线性及材料疲劳损伤对螺栓球节点的圆钢管杆件滞回性能、力学指标及耗能性能等超低周疲劳性能的影响。结果表明:加载制度对于试验构件的超低周疲劳性能有直接影响,数值模拟与试验结果相近,所采用的疲劳损伤本构能够较为准确地描述构件超低周疲劳特性。The hidden danger of ultra-low cycle fatigue failure of spatial grid structures directly threatens the safety performance of such buildings with tens of thousands of strong earthquakes.Based on OpenSEES finite element analysis software,the ultra-low cycle fatigue performance of 12 steel pipes with bolted ball joints at both ends under large displacement cyclic loading test was numerically simulated.The influence of joint influence,double nonlinearity and material fatigue damage on the hysteresis performance,mechanical index and energy dissipation performance of the round steel pipe rod with bolted ball joint is analyzed.The results show that the loading regime has a direct effect on the ultra-low cycle fatigue performance of the test components.The numerical simulation results are similar to the test results,and the fatigue damage constitutive method used can accurately describe the ultra-low cycle fatigue characteristics of the components.

关 键 词：空间网格结构 OpenSEES有限元分析 疲劳损伤本构 超低周疲劳性能 

分 类 号：TU393.3[建筑科学—结构工程]