多层轻钢框架结构的抗震性能分析
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摘要
多层轻钢结构是目前国内外应用和发展速度最快的轻型结构形式,目前国内外对这种结构的静力性能研究较多,而动力分析结果不多见。运用ANSYS有限元计算软件对一个具体工程的动力特性进行分析(模态分析、振型分解反应谱分析、弹性/弹塑性时程分析),并与专用软件PKPM的计算结果进行对比分析。计算表明,轻钢屋面顶层的鞭梢作用存在,但相对而言,结构底层受地震作用更为严重。
Light-weight steel multi-storey structures are widely used and developing rapidly all over the world.At the present time,much work on the study of the static behavior has been done,but the analysis of the dynamic properties is rare.Taking a specific engineering as an example,the dynamic properties are analyzed by the finite element software ANSYS,including modal analysis,spectrum analysis,elastoplastic time-history analysis,whose results are compared with those of PKPM.The result shows,the whiplash effect exists,but in comparison,the ground floor is affected more severely in earthquake.
Light-weight steel multi-storey structures are widely used and developing rapidly all over the world.At the present time,much work on the study of the static behavior has been done,but the analysis of the dynamic properties is rare.Taking a specific engineering as an example,the dynamic properties are analyzed by the finite element software ANSYS,including modal analysis,spectrum analysis,elastoplastic time-history analysis,whose results are compared with those of PKPM.The result shows,the whiplash effect exists,but in comparison,the ground floor is affected more severely in earthquake.
引文
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2 GB 50011-2001建筑抗震设计规范
3王勖成,邵敏.有限单元法基本原理和数值方法.北京:清华大学出版社,1997
4刘歌青,石永久,王元清,等.纯框架体系在多层轻钢住宅中的应用研究.工业建筑,2002,32(12):64-66
5黄炳生,舒赣平,吕志涛.多层轻钢框架的地震时程分析.工业建筑,2001,31(8):5-7
2 GB 50011-2001建筑抗震设计规范
3王勖成,邵敏.有限单元法基本原理和数值方法.北京:清华大学出版社,1997
4刘歌青,石永久,王元清,等.纯框架体系在多层轻钢住宅中的应用研究.工业建筑,2002,32(12):64-66
5黄炳生,舒赣平,吕志涛.多层轻钢框架的地震时程分析.工业建筑,2001,31(8):5-7
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