某钢结构房屋整体弹塑性性能评估
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摘要
从结构材料的弹塑性本构关系入手,利用通用有限元程序ANSYS/LS-DYNA强大的分析功能,模拟钢结构中的框架梁和框架柱的弹塑性变形性能。通过对结构进行弹塑性时程分析,得到了结构的层间位移、结构顶点位移和基底剪力时程曲线、塑性发展过程和塑性发展区域等指标,综合反映和评估了结构在强震作用下的弹塑性性能。
Based on the elasto-plastic stress-strain relation,powerful analysis property of general Finite Element program ANSYS/LS-DYNA was used to model the elasto-plastic deformation of frame beams and columns in a steel frame structure.And an elasto-plastic time history analysis of the engineering project was done to get story drifts,top displacement and base shear time-history curve,plastic development processes and zones,which can synthetically reflect and be used to evaluate elasto-plastic performance of the structure under strong seismic action.
Based on the elasto-plastic stress-strain relation,powerful analysis property of general Finite Element program ANSYS/LS-DYNA was used to model the elasto-plastic deformation of frame beams and columns in a steel frame structure.And an elasto-plastic time history analysis of the engineering project was done to get story drifts,top displacement and base shear time-history curve,plastic development processes and zones,which can synthetically reflect and be used to evaluate elasto-plastic performance of the structure under strong seismic action.
引文
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[15]John O.Hallquist.LS-DYNA Theory Manual[M].2006.
[16]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[2]李杰,李国强.地震工程学导论[M].北京:地震出版社,1992.
[3]Takeda T,Sozen M A,Nielson N N.Reinforcedconcrete response to simulated earthquakes[J].Journal of Strctural Division,ASCE,1970,96(ST12):2557-2572.
[4]冯仲齐,梅占馨.框架-剪力墙结构分析的高精度平面单元[J].应用力学学报,1998,15(2):105.
[5]Bertero V A,Coltti V V V.Analytical Modeling of R/C Structural Walls[C]∥9th WCEE,1988.
[6]汪梦甫,周锡元.高层建筑结构抗震弹塑性分析方法及抗震性能评估的研究[J].土木工程学报,2003,36(11):44-49.
[7]Kabeyasawa T,Shioara H,Otani S.US-Japancooperative research on RC full scale building test-Part 5:discussion on dynamic response system[C]∥Proc.8th WCEE,1984,S.Francisco.
[8]郭子雄,吕西林.高轴压比下RC框架柱恢复力模型试验研究[J].土木工程学报,2004,37(5):32-38.
[9]郭子雄,周素琴.RC框架节点的弯矩-滑移转角恢复力模型[J].地震工程与工程震动,2003,23(3):118-124.
[10]Lubliner J,Oliver J,Oller S,et al.A plastic-damagemodel for concrete[J].International Journal of Solidsand Strctures,1989,25:299-329.
[11]汪大绥,李志山,李承铭,等.复杂结构弹塑性时程分析在ABAQUS中的实现[C].第十九届全国高层建筑结构学术交流会论文集,2006:203-211.
[12]方鄂华,钱稼茹.我国高层建筑抗震设计的若干问题[J].土木工程学报,1999(1):3-8.
[13]方鄂华,何国松,容柏生,等.广州天王中心大厦弹塑性地震反应分析[J].建筑结构学报,2000(6):10-15.
[14]王勖成,邵敏.有限单元法基本原理和数值方法[M].北京:清华大学出版社,2001.
[15]John O.Hallquist.LS-DYNA Theory Manual[M].2006.
[16]中华人民共和国建设部.GB 50011—2001建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
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