摘要
目前对支承于下部结构的空间结构体系,一般采用上下部结构整体建模的方式计算其地震响应,通常计算量很大,为工程设计带来不便.本文提出一种可考虑质量、刚度分布的下部支承结构体系的简化方法,可应用于体系复杂、扭转显著结构的地震响应分析.通过对某实际结构的计算分析验证,本文方法能大幅减少计算量,结构整体地震响应计算精度满足工程设计要求,但个别构件应力计算精度有待改进.
To estimate the seismic response of spatial structure with a supporting system,an overall model is usually needed,which can be computationally demanding for routine application.Developed herein is a simplified method considering the distribution of mass and stiffness and available for complicated structure with significant torsion.When applied to a practical project,this method is demonstrated to be accurate in overall seismic response estimating,while less accurate in stress calculating of individual members.
引文
[1]董石麟.中国空间结构的发展与展望[J].建筑结构学报,2010,30(6):38-51.DONG Shi-lin.Development and expectation of spatial structures in China[J].Journal of Building Structures,2010,30(6):38-51.
[2]董石麟.空间结构的发展历史、创新、形式分类与实践应用[J].空间结构,2009,15(3):22-43.DONG Shi-lin.The development history,innovation,classification and practical application of spatial structures[J].Spatial Structures,2009,15(3):22-43.
[3]王磊.空间网格结构振型遴选阈值法理论研究[D],2011,同济大学.WANG Lei.Research on Threshold Value Method for Vibration Mode Selection of Spatial Latticed Structures[D].Shanghai:Tongji University,2011.
[4]廖冰.大跨度空间结构主振型选择与随机地震作用相关性研究[D].上海:同济大学,2013.LIAO Bing.A Research on the Correlation between the Earthquake and the Dominant Vibration Mode Selection of a Large-span Spatial Structure[D].Shanghai:Tongji University,2013.
[5]董石麟,高博青.工业厂房网架在桥吊荷载作用下上下部结构协同工作的受力特性与简化计算法[J].空间结构,1997,3(4):3-7.DONG Shi-lin,GAO Bo-qing.Research on mechanical properties and simplified method for industry workship grid structure under crane loads considering cooperative effect[J].Spatial Structures,1997,3(4):3-7.
[6]王磊.大跨复杂网壳与下部结构协同工作性能研究[D].兰州:兰州理工大学,2009.WANG Lei.Research on Cooperative Effect Performance of Large-span Complex Lattice Shell and Substructure[D].Lanzhou:Lanzhou University of Technology,2009.
[7]陈应波,陈军明.网壳结构与下部结构协同工作的研究[J].华中科技大学学报(自然科学版),2004,31(3):49-50.CHEN Ying-bo,CHEN Jun-ming.Study of the cooperative effect between reticulated shell and supporting structure[J].Journal of Huazhong University of Science and Technology(Nature Science Edition),2004,31(3):49-50.
[8]曹资,张超,张毅刚,等.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):19-26.CAO Zi,ZHANG Chao,ZHANG Yi-gang,et al.A study on the dynamic interaction between lattice shells and the supporting structures[J].Spatial Structures,2001,7(2):19-26.
[9]刘成军.网壳结构与下部支承体系协同工作的研究[D].南京:东南大学,2005.LIU Cheng-jun.Research on Harmonious Work of the Roof and the Brace of the Shell[D].Nanjing:Southeast University,2005.
[10]李金龙.空间结构与下部结构协同工作简化分析方法研究[D].天津:天津大学,2009.LI Jin-long,Research on Simplified Analysis Method for Spatial Structures Considering the Effect of Substructures[D].Tianjin:Tianjin University,2009.
[11]韦承基,史铁花,薛彦涛.合理振型数的确定及扭转振型判定[J].工程抗震,2002,24(4):1-2.WEI Cheng-ji,SHI Tie-hua,XUE Yan-tao.Decision of reasonable mode number and judgment of torsion mode[J].Earthquake Resistant Engineering,2002,24(4):1-2.
[12]王福智,王依群,邓孝祥.振型数的选取及扭转振型的确定[J].天津理工大学学报,2005,21(3):81-85.WANG Fu-zhi,WANG Yi-qun,DENG Xiao-xiang.Selection of mode number and determination of torsional mode[J].Journal of Tianjin University of Technology,2005,21(3):81-85.
[13]吕西林,王亚勇,郭子雄.建筑结构抗震变形验算[J].建筑科学,2002,17(1):11-15.LV Xi-lin,WANG Ya-yong,GUO Zi-xiong.Elastoplastic deformation checking of building structures under different seismic levels[J].Building Science,2002,17(1):11-15.
[14]CECS 160-2004.建筑工程抗震形态设计通则[S].北京:中国计划出版社,2004.