双向张弦梁结构的多维地震响应分析和计算
|
摘要
采用随机振动理论的功率谱法,对双向张弦梁结构在多维地震作用下的动力性能及抗震计算两方面问题进行了探讨。以一个90m×90m的双向张弦梁屋盖结构为算例,分析了结构的自振特性、多维地震下的位移和内力响应特点、各地震动分量对结构响应的贡献以及上下部协同工作的影响等。在地震作用计算方面,对组合振型数的选取、预应力效应的影响、阻尼比的敏感性以及《建筑抗震设计规范》(GB50011)的多维地震效应组合方法的有效性进行了考察。对双向张弦梁结构的一些非常规地震响应特点给予了强调,提出抗震计算方面的建议,可供设计人员参考。
Based on the power spectrum method of stochastic vibration theory,the seismic response and its computation of two-way beam string structures(BSS)under multi-dimensional earthquake excitation were discussed.By means of an illustrative 90m × 90m two-way BSS roof,dynamic properties and characteristics of multi-dimensional earthquake responses were presented.Structural response contributions from different ground motion components and interactions between the roof and the supporting frame were also analyzed.Some aspects on seismic action computation of two-way BSS were further investigated,including the number of the participating modes,the impact of initial prestress distributions and the sensitivity of damping ratios.The validity of the multi-dimensional seismic effect combination method suggested in China Code for Seismic Design of Buildings(GB50011),was also investigated.Unconventional dynamic response characteristics of two-way BSS were emphasized.Some suggestions about the aseismic computation were also put forward for design of two-way BSS.
Based on the power spectrum method of stochastic vibration theory,the seismic response and its computation of two-way beam string structures(BSS)under multi-dimensional earthquake excitation were discussed.By means of an illustrative 90m × 90m two-way BSS roof,dynamic properties and characteristics of multi-dimensional earthquake responses were presented.Structural response contributions from different ground motion components and interactions between the roof and the supporting frame were also analyzed.Some aspects on seismic action computation of two-way BSS were further investigated,including the number of the participating modes,the impact of initial prestress distributions and the sensitivity of damping ratios.The validity of the multi-dimensional seismic effect combination method suggested in China Code for Seismic Design of Buildings(GB50011),was also investigated.Unconventional dynamic response characteristics of two-way BSS were emphasized.Some suggestions about the aseismic computation were also put forward for design of two-way BSS.
引文
[1]Saitoh M.Study on mechanical characteristics of a light-weight complex structure composed of a membrane and a Beam String Structure[C].IASS Symposium on Spatial,Lat-tice,Tension Structures,1994,663-674.
[2]白正仙,刘锡良,李义生.新型空间结构形式—张弦梁结构[J].空间结构,2001,7(2):33-38.
[3]覃阳,朱忠义,柯长华,等.北京2008年奥运会国家体育馆屋顶结构设计[J].建筑结构,2008,(1):17-20,34.
[4]董石麟,罗尧治,赵阳.新型空间结构分析、设计与施工[M].北京:人民交通出版社,2006.
[5]王秀丽,高月梅,高森,等.大跨度双向张弦梁地震响应分析[J].甘肃科学学报,2007,9(19):123-126.
[6]丁博涵.张弦梁结构的静力、抗震和抗风性能研究[D].杭州:浙江大学,2005.
[7]GB50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[8]李宏男.结构多维抗震理论与设计方法[M].北京:科学出版社,2006.
[9]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.
[10]曹资,薛素铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
[11]孙景江,江近仁.与规范反应谱相对应的金井清谱的谱参数[J].世界地震工程,1990(1):42-48.
[12]Davenport A G.Note on the distribution of largest value of a random function with application to gust loading[C].Proc.Inst.Civil Eng.,1964,28:187-196.
[13]林华峰.基于虚拟激励法的张弦梁结构多维地震响应分析[D].杭州:浙江大学,2008.
[14]刘庆林,傅学怡.反应谱CQC法的合理振型数确定研究[J].建筑结构学报.2006,27(6):87-93.
[15]Wilson E L.Three dimensional static and dynamic analysis of structures:a physical approach with emphasis on earthquake engineering[M].Berkley:Computers and Structures,Inc.2002.
[2]白正仙,刘锡良,李义生.新型空间结构形式—张弦梁结构[J].空间结构,2001,7(2):33-38.
[3]覃阳,朱忠义,柯长华,等.北京2008年奥运会国家体育馆屋顶结构设计[J].建筑结构,2008,(1):17-20,34.
[4]董石麟,罗尧治,赵阳.新型空间结构分析、设计与施工[M].北京:人民交通出版社,2006.
[5]王秀丽,高月梅,高森,等.大跨度双向张弦梁地震响应分析[J].甘肃科学学报,2007,9(19):123-126.
[6]丁博涵.张弦梁结构的静力、抗震和抗风性能研究[D].杭州:浙江大学,2005.
[7]GB50011-2001.建筑抗震设计规范[S].北京:中国建筑工业出版社,2001.
[8]李宏男.结构多维抗震理论与设计方法[M].北京:科学出版社,2006.
[9]林家浩,张亚辉.随机振动的虚拟激励法[M].北京:科学出版社,2004.
[10]曹资,薛素铎.空间结构抗震理论与设计[M].北京:科学出版社,2005.
[11]孙景江,江近仁.与规范反应谱相对应的金井清谱的谱参数[J].世界地震工程,1990(1):42-48.
[12]Davenport A G.Note on the distribution of largest value of a random function with application to gust loading[C].Proc.Inst.Civil Eng.,1964,28:187-196.
[13]林华峰.基于虚拟激励法的张弦梁结构多维地震响应分析[D].杭州:浙江大学,2008.
[14]刘庆林,傅学怡.反应谱CQC法的合理振型数确定研究[J].建筑结构学报.2006,27(6):87-93.
[15]Wilson E L.Three dimensional static and dynamic analysis of structures:a physical approach with emphasis on earthquake engineering[M].Berkley:Computers and Structures,Inc.2002.
版权所有：© 2023 中国地质图书馆 中国地质调查局地学文献中心