低周往复荷载下楔形H形钢短梁滞回性能Ⅱ:数值模拟
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摘要
基于ANSYS工作平台,建立所完成的7个楔形薄腹H形钢短梁试验试件的数值分析模型,对其进行循环往复荷载作用下的全过程分析,分析中考虑双重非线性、初始几何缺陷、残余应力等因素的影响。将循环荷载下试验试件的数值计算结果与试验结果进行对比分析,讨论试件破坏形态、滞回曲线、最大承载力等方面的对比结果。分析结果表明:数值模拟能够较好地反映试件的试验结果,所采用的数值分析模型和数值方法可以进行楔形薄腹H形钢构件的数值模拟分析。
Using nonlinear finite element method,a numerical model is constructed to investigate the hysteretic behavior of tapered H-section members,with the effects of local imperfections of the web,yielding,residual stress and large deflections taken into account.The accuracy of the numerical model is verified by comparing the numerical analysis with the experiment of seven H-section steel short beams under low cyclic reversed loading,with focus on local buckling,failure mode,hysteretic curve and ultimate bearing capacity.
Using nonlinear finite element method,a numerical model is constructed to investigate the hysteretic behavior of tapered H-section members,with the effects of local imperfections of the web,yielding,residual stress and large deflections taken into account.The accuracy of the numerical model is verified by comparing the numerical analysis with the experiment of seven H-section steel short beams under low cyclic reversed loading,with focus on local buckling,failure mode,hysteretic curve and ultimate bearing capacity.
引文
[1]赵静.薄柔截面H形钢构件抗震性能研究[D].上海:同济大学,2004(Zhao Jing.Research on the seismicbehaviors of thin-walled H-section steel members[D].Shanghai:Tongji University,2004(in Chinese))
[2]Goto Y,Wang Qingyun,Obata M.FEM analysis forhysteretic behavior of thin-walled steel columns[J].Journal of Structural Engineering,1998,124(11):1290-1301
[3]Fukumonto Y,Kusama H.Local instability tests of plateelements under cyclic uniaxial loading[J].Journal ofStructural Engineering,1985,111(5):1051-1067
[4]Fukumonto Y,Kusama H.Cyclic behavior of plates underin-plane loading[J].Engineering Structures,1985,7:56-63
[5]Lindner J.Stability of structural members:general report[J].Journal of Constructional Steel Research,2000,55(1-3):29-44
[6]Dubina D,Goina D,Georgescu M,et al.Recent researchon stability analysis of thin-walled cold-formed steelmembers[J].Journal of Constructional Steel Research,1998,46(1):172-173
[7]苏明周.箱形截面钢构件在地震作用下的相关屈曲破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2002(Su Mingzhou.Aseismic design devices and failuremechanism of related buckling of box steel members underseismic loading[D].Xi’an:Xi’an University ofArchitecture and Technology,2002(in Chinese))
[8]陈城.变截面宽肢薄腹构件滞回性能的数值分析和实验研究[D].上海:同济大学,2003(Chen Cheng.Testingresearch and numerical analysis on the hysteresis behaviorsof the thin walled tapered steel members[D].Shanghai:Tongji University,2003(in Chinese))
[9]CECS102:2002门式刚架轻型房屋钢结构技术规程[S](CECS102:2002 Technical specification for steel structureof light-weight buildings with gabled frames[S](inChinese))
[10]乔磊.变截面H形钢柱稳定性能的试验研究与数值分析[D].北京:北京交通大学,2006(Qiao Lei.Academicand testing research on the buckling behaviors of taperedH-section steel column with thin web[D].Beijing:Beijing Jiaotong University,2006(in Chinese))
[11]龙丽华.楔形H形钢薄腹梁屈曲性能研究[D].北京:北京交通大学,2005(Long Lihua.Buckling behaviors oftapered H-section beam with thin web[D].Beijing:Beijing Jiaotong University,2005(in Chinese))
[2]Goto Y,Wang Qingyun,Obata M.FEM analysis forhysteretic behavior of thin-walled steel columns[J].Journal of Structural Engineering,1998,124(11):1290-1301
[3]Fukumonto Y,Kusama H.Local instability tests of plateelements under cyclic uniaxial loading[J].Journal ofStructural Engineering,1985,111(5):1051-1067
[4]Fukumonto Y,Kusama H.Cyclic behavior of plates underin-plane loading[J].Engineering Structures,1985,7:56-63
[5]Lindner J.Stability of structural members:general report[J].Journal of Constructional Steel Research,2000,55(1-3):29-44
[6]Dubina D,Goina D,Georgescu M,et al.Recent researchon stability analysis of thin-walled cold-formed steelmembers[J].Journal of Constructional Steel Research,1998,46(1):172-173
[7]苏明周.箱形截面钢构件在地震作用下的相关屈曲破坏机理及抗震设计对策[D].西安:西安建筑科技大学,2002(Su Mingzhou.Aseismic design devices and failuremechanism of related buckling of box steel members underseismic loading[D].Xi’an:Xi’an University ofArchitecture and Technology,2002(in Chinese))
[8]陈城.变截面宽肢薄腹构件滞回性能的数值分析和实验研究[D].上海:同济大学,2003(Chen Cheng.Testingresearch and numerical analysis on the hysteresis behaviorsof the thin walled tapered steel members[D].Shanghai:Tongji University,2003(in Chinese))
[9]CECS102:2002门式刚架轻型房屋钢结构技术规程[S](CECS102:2002 Technical specification for steel structureof light-weight buildings with gabled frames[S](inChinese))
[10]乔磊.变截面H形钢柱稳定性能的试验研究与数值分析[D].北京:北京交通大学,2006(Qiao Lei.Academicand testing research on the buckling behaviors of taperedH-section steel column with thin web[D].Beijing:Beijing Jiaotong University,2006(in Chinese))
[11]龙丽华.楔形H形钢薄腹梁屈曲性能研究[D].北京:北京交通大学,2005(Long Lihua.Buckling behaviors oftapered H-section beam with thin web[D].Beijing:Beijing Jiaotong University,2005(in Chinese))
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