地震作用下肋环斜杆型单层球面网壳结构的动力稳定性
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摘要
基于全过程非线性动力反应时程分析方法,采用实用的动力稳定性判定准则,以肋环斜杆型单层球面网壳结构为研究对象,系统地分析其在地震作用下的动力稳定性能.分别考虑了地震输入维数(水平、竖向、三向)、材料非线性、结构阻尼、初始几何缺陷、杆件截面面积、矢跨比、屋面荷载、支座条件和不同地震波(EL-Centro波、Taft波、天津波)等参数的影响,分析表明,考虑多维地震输入对单层球面网壳动力稳定性分析非常必要,不同地震波对单层球面网壳结构的动力稳定性影响程度不同,将其计算结果与K型网壳结论对比,得出了一些有意义的结论,可为网壳工程设计提供参考.
Based on the full-range nonlinear dynamic response analysis and using a practical dynamic stability behavior determinant criterion,the nonlinear dynamic stability of Schwedler single-layer spherical reticulated shells under earthquake action is analyzed;the factors,which affect the response behaviors,such as the input dimensions of the seismic loads,the material nonlinearity,the structural damping,the initial geometric imperfection,the cross-sectional areas of members,the ratios of rise to span,the roof loads,the condition of supports and the different earthquake waves,are taken into account;the computing results are shown that discussing input dimensions of the seismic loads is necessary for analyzing dynamic stability of single-layer spherical reticulated shells;and the effects of different earthquake waves are different for dynamic stability of single-layer spherical reticulated shells.The obtained results of Schwedler shells are compared with the conclusions of Kiewitt shells.It can provide a valuable reference for practical design of reticulated shells.
Based on the full-range nonlinear dynamic response analysis and using a practical dynamic stability behavior determinant criterion,the nonlinear dynamic stability of Schwedler single-layer spherical reticulated shells under earthquake action is analyzed;the factors,which affect the response behaviors,such as the input dimensions of the seismic loads,the material nonlinearity,the structural damping,the initial geometric imperfection,the cross-sectional areas of members,the ratios of rise to span,the roof loads,the condition of supports and the different earthquake waves,are taken into account;the computing results are shown that discussing input dimensions of the seismic loads is necessary for analyzing dynamic stability of single-layer spherical reticulated shells;and the effects of different earthquake waves are different for dynamic stability of single-layer spherical reticulated shells.The obtained results of Schwedler shells are compared with the conclusions of Kiewitt shells.It can provide a valuable reference for practical design of reticulated shells.
引文
[1]沈世钊,陈昕.网壳结构稳定性[M].北京:科学出版社,1999.
[2]林智斌,桂国庆,钱若军.单层球壳结构在简单荷载作用下的动力稳定分析[J].工程力学,2006,23(6):6-10.
[3]王策,沈世钊.单层球面网壳结构动力稳定分析[J].土木工程学报,2000,33(6):17-24.
[4]郭海山,沈世钊.单层网壳结构动力稳定性分析方法[J].建筑结构学报,2003,34(5):1-9.
[5]桂国庆,英金贵,王玉娥.单层球面网壳结构在地震作用下的动力稳定性[C]//第17届全国结构工程学术会议论文集,2008,Ⅲ:31-36.
[6]郭瑞林.肋环斜杆型单层球面网壳结构的动力稳定性研究[D].南昌:南昌大学,2007.
[7]ANSYS Corporation.ANSYS Theory Guide[Z].2000.
[8]叶继红,沈祖炎.结构阻尼对网壳结构动力稳定性能的影响[J].工业建筑,1997,27(3):33-37.
[9]董继斌,刘善维.网壳结构的边界条件及支座设计[J].空间结构,1997,3(4):39-46.
[10]曹资,张超.网壳屋盖与下部支承结构动力相互作用研究[J].空间结构,2001,7(2):20-26.
[2]林智斌,桂国庆,钱若军.单层球壳结构在简单荷载作用下的动力稳定分析[J].工程力学,2006,23(6):6-10.
[3]王策,沈世钊.单层球面网壳结构动力稳定分析[J].土木工程学报,2000,33(6):17-24.
[4]郭海山,沈世钊.单层网壳结构动力稳定性分析方法[J].建筑结构学报,2003,34(5):1-9.
[5]桂国庆,英金贵,王玉娥.单层球面网壳结构在地震作用下的动力稳定性[C]//第17届全国结构工程学术会议论文集,2008,Ⅲ:31-36.
[6]郭瑞林.肋环斜杆型单层球面网壳结构的动力稳定性研究[D].南昌:南昌大学,2007.
[7]ANSYS Corporation.ANSYS Theory Guide[Z].2000.
[8]叶继红,沈祖炎.结构阻尼对网壳结构动力稳定性能的影响[J].工业建筑,1997,27(3):33-37.
[9]董继斌,刘善维.网壳结构的边界条件及支座设计[J].空间结构,1997,3(4):39-46.
[10]曹资,张超.网壳屋盖与下部支承结构动力相互作用研究[J].空间结构,2001,7(2):20-26.
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