方钢管混凝土框架抗震性能试验研究与非线性有限元分析
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摘要
为研究采用穿芯高强螺栓-端板节点的方钢管混凝土柱-钢梁平面框架的抗震性能,制作了3榀方钢管混凝土框架试件,通过低周反复荷载试验,研究了框架的抗震性能,分析了轴压比、梁柱线刚度比对框架抗震性能的影响。在考虑几何、材料及接触非线性的基础上,采用有限元软件ABAQUS 6.10对试验框架进行了低周反复荷载作用下的精细化数值模拟。与试验结果的比较表明,数值分析结果与试验结果吻合较好,具有较好的精度,可用于方钢管混凝土框架的分析。基于数值分析结果,剖析了框架梁柱连接节点、柱脚等关键受力部位的应力发展过程,明确了框架的受力机理和破坏机制。
To research the seismic behavior of concrete filled square steel tube(CFT) columns and steel beam planar frame with through bolt-endplate beam-column connection,a total of 3 pseudo-static experiments have been conducted for three planar experimental specimens.The influence of axial load ratio and linear stiffness ratio of steel beam’s to column’s on the frame seismic behavior are investigated.The nonlinear finite element analysis involving geometric,material and contact nonlinearities is made using the ABAQUS finite element package.The results of the nonlinear analysis for the frame agree well with the experimental ones.Based on the results of the nonlinear analysis,the stress developing progress of beam-column joints and column bases is investigated.The load-transferring mechanism and failure mechanism are determined.
To research the seismic behavior of concrete filled square steel tube(CFT) columns and steel beam planar frame with through bolt-endplate beam-column connection,a total of 3 pseudo-static experiments have been conducted for three planar experimental specimens.The influence of axial load ratio and linear stiffness ratio of steel beam’s to column’s on the frame seismic behavior are investigated.The nonlinear finite element analysis involving geometric,material and contact nonlinearities is made using the ABAQUS finite element package.The results of the nonlinear analysis for the frame agree well with the experimental ones.Based on the results of the nonlinear analysis,the stress developing progress of beam-column joints and column bases is investigated.The load-transferring mechanism and failure mechanism are determined.
引文
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[15]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007.HAN Linhai.Concrete filled steel tubular structure-theory and practice[M].Beijing:Science Press,2007.(in Chinese)
[2]Kawaguchi J,Morino S,Sugimoto T,et al.Experimental study on structural characteristics of portal frames consisting of square CFT columns[C]//Proceedings of the Conference Composite Construction in Steel and Concrete.Banff,Canada:American Society of Civil Engineers,2002.
[3]王文达,韩林海,陶忠.钢管混凝土柱-钢梁平面框架抗震性能的试验研究[J].建筑结构学报,2006,27(3):48-58.WANG Wenda,HAN Linhai,TAO Zhong.Experimental research on seismic behavior of concrete filled CHS and SHS columns and steel beam pla-nar frames[J].Journal of Building Structures,2006,27(3):48-58.(in Chinese)
[4]许成祥.钢管混凝土框架结构抗震性能的试验与理论研究[D].天津:天津大学,2003.XU Chengxiang.Experimental and theoretical research on seismic behavior of concrete-filled steel tubular frames[D].Tianjin:Tianjin University,2003.(in Chinese)
[5]王来,王铁成,齐建伟,等.方钢管混凝土框架滞回性能试验与理论研究[J].天津大学学报,2005,38(1):41-46.WANG Lai,WANG Tiecheng,QI Jianwei,et al.Experimental and theoretical study on hysteretic behavior of concrete-filled rectangular steel tubularframe[J].Journal of Tianjin University,2005,38(1):41-46.(in Chinese)
[6]王先铁,郝际平,周观根,等.两层两跨方钢管混凝土框架抗震性能试验研究[J].地震工程与工程振动,2010,30(3):70-76.WANG Xiantie,HAO Jiping,ZHOU Guangen,et al.Experimental research on seismic behavior of two-story two-bay concrete filled square steel tubecolumns and steel beam frames[J].Journal of Earthquake Engineering and Engineering Vibration,2010,30(3):70-76.(in Chinese)
[7]Jerome F H,Aleksandr M,Paul H S A distributed plasticity model for cyclic analysis of concrete-filled steel tube beam-columns and CompositeFrames[J].Engineering Structures,1998,20(4):398-412.
[8]王文达,韩林海.钢管混凝土框架结构力学性能非线性有限元分析[J].建筑结构学报,2008,29(6):75-83.WANG Wenda,HAN Linhai.Nonlinear finite element analysis on mechanical performance of concrete filled steel tubular frame structure[J].Jour-nal of Building Structures,2008,29(6):75-83.(in Chinese)
[9]WANG W D,HAN L H,ZHAO X L.Analytical behavior of frames with steel beams to concrete-filled steel tubular column[J].Journal of Con-structional Steel Research,2009,65(3):497-508.
[10]王先铁,郝际平,周观根,等.方钢管混凝土柱-钢梁平面框架抗震性能试验研究[J].建筑结构学报,2010,31(8):8-14.WANG Xiantie,HAO Jiping,ZHOU Guangen,et al.Experimental research on seismic behavior of concrete filled square steel tube columns andsteel beam planar frames[J].Journal of Building Structures,2010,31(8):8-14.(in Chinese)
[11]Hibbitt,Karlson&Sorensen Inc.ABAQUS/standard User's Manual Version 6.5[M].Providence(RI):Hibbitt,Karlsson&Sorensen Inc,2005.
[12]刘威.钢管混凝土局部受压时的工作机理研究[D].福建:福州大学,2005.LIU Wei.Research on mechanism of concrete-filled steel tubes subjected to local compression[D].Fujian:Fuzhou University,2005.(in Chinese)
[13]ACI Committee 318.Building code requirements for reinforced concrete and commentary(ACI 318R-05)[S].Detroit:American Concrete Insti-tute,2005.
[14]陈肇元,朱金铨,吴佩刚.高强混凝土及其应用[M].北京:清华大学出版社,1992.CHEN Zhaoyuan,ZHU Jinquan,WU Peigang.High-strength concrete and its utilization[M].Beijing:Tsinghua University Press,1992.(in Chi-nese)
[15]韩林海.钢管混凝土结构-理论与实践[M].北京:科学出版社,2007.HAN Linhai.Concrete filled steel tubular structure-theory and practice[M].Beijing:Science Press,2007.(in Chinese)
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