高层建筑结构考虑几何刚度的梁柱效应分析
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摘要
结构的几何刚度与应变中的某些特定非线性项相对应,与弹性刚度相比,其对一般结构计算结果的影响通常可忽略不计。但对于某些较特殊或高层建筑结构,则需要考虑其影响。本研究通过对几个工程实例的计算,表明在有些结构尤其是高层建筑结构中,几何刚度对计算结果的影响比较显著,进行梁柱效应分析是必要的。
Compared with elastic stiffness, the effect of geometric stiffness which corresponds to some non-linear terms in structural strain, is relatively small and often neglected in structural analysis in most cases. However, the influence must be taken into account for some special structures. The result comparison of two engineering examples shows that the effects of geometric stiffness should not be neglected for some structures, especially for high-layer buildings. For such structures, beam-column effect analysis is necessary.
Compared with elastic stiffness, the effect of geometric stiffness which corresponds to some non-linear terms in structural strain, is relatively small and often neglected in structural analysis in most cases. However, the influence must be taken into account for some special structures. The result comparison of two engineering examples shows that the effects of geometric stiffness should not be neglected for some structures, especially for high-layer buildings. For such structures, beam-column effect analysis is necessary.
引文
[1] 朱杰江,吕西林,容柏生.高层混凝土结构重力二阶效应的影响分析[J].建筑结构学报,2003(6):38-43.
[2] 李云光.结构工程有限元法[M].北京:中国建材工业出版社,2002.
[3] 刘洪兵,贾燕翔,张春燕.竖向地震作用下框架结构竖向刚度矩阵的计算[J].西北水力发电,2003(1):5-7.
[4] 袁明武.SAP84结构分析通用程序(分析部分)[M].北京大学力学系编.北京:北京大学出版社,2001.
[2] 李云光.结构工程有限元法[M].北京:中国建材工业出版社,2002.
[3] 刘洪兵,贾燕翔,张春燕.竖向地震作用下框架结构竖向刚度矩阵的计算[J].西北水力发电,2003(1):5-7.
[4] 袁明武.SAP84结构分析通用程序(分析部分)[M].北京大学力学系编.北京:北京大学出版社,2001.
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