基于ABAQUS的全钢装配式防屈曲支撑有限元分析基于ABAQUS的全钢装配式防屈曲支撑有限元分析.pdf

第34 卷第 1 期 工程抗震与加固改造 Vol. 34 ，No. 1 20 12 年2 月 Earthquake Resistant Engineering and Retrofitting Feb ． 20 12 ［文章编号］ 1002 -84 12 (20 12)0 1-0020 -06 基于ABAQUS 的全钢装配式防屈曲支撑有限元分析 张振兴，宁响亮，刘 军，李文斌，陈彦北(中国南车株洲时代新材料科技股份有限公司，湖南株洲4 12007 ) ［提 要］ 防屈曲支撑受拉受压时都可以屈服，抑制了压曲现象，可获得饱满的荷载－ 位移滞回曲线。本研究主要探讨一种 新型的装配式防屈曲支撑的滞回性能，该装配式防屈曲支撑由一组核心单元与两组约束单元利用螺栓栓接组合而成，具有组 装和拆解过程简易、便于制作等优点。基于有限元分析软件 ABAQUS ，模拟核心钢与面板在不同间隙下的滞回性能以及各部 分的应力分布，对比分析分别由理论简化计算和有限元分析得到的屈服力与屈服位移之间的差异。最后，给出核心钢与面板 间隙范围的合理化建议。 ［关键词］ 防屈曲支撑;装配式;滞回性能;ABAQUS ［中图分类号］ TU 352 ． 1 ［文献标识码］ A Finite Element Analysis of Full Steel Assembled Buckling Restrained Brace Based on ABAQUS Zhang Zhen-xing ，Ning X iang -liang ，Liu Jun ，Li Wen-bin ，Chen Yan-bei (CSR Zhuzhou Times New M aterial Technology Co． ，Ltd ，Zhuzhou 4 12007 ，China) Abstract :Buckling restrained brace is able to yield in both axial tension and compression ，and having the ability to prevent buckling ， the full load-displacement hysteretic curve can be obtained ． In this paper ，the hysteretic performance of assembled buckling restrained braces is discussed ． This new type of buckling restrained brace is composed by a set of steel core and some constraints units ，and bolts are employed herein ，which having the advantages of easy to assemble and disassemble ，manufacture ． Based on the finite element analysis software ABAQUS ，the stress distribution of various parts and hysteretic behavior of the buckling restrained brace with different gap between steel core and panel are simulated ，and the comparisons of the yield force and yield displacement obtained from theoretical value and finite element simulation results are also conducted ． Finally ，reasonable suggestion for the gap range is proposed ． Keywords :BRB (buckling restraied brace);assembled ;hy