青城山居士楼砖木混合结构抗震性能数值分析
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摘要
为研究宗教建筑震后加固改造技术,基于对改造施工中的青城山上清宫居士楼进行的实地调查,采用有限元法,考虑边界非线性的影响,建立了数值分析模型,在此基础上对其自振特性进行了分析,结果与规范公式基本一致.此外,基于瞬态动力分析方法,对改造前、后的结构变形、基底剪力和构件内力响应进行了分析.研究表明,柔性边界可以较好地协调砖木结构的受力变形,形成刚柔相济的结构体系,提高结构抗震能力.
An investigation was carried out on the Jushi building being retrofitted in the Shangqing Temple on the Qingcheng Mountain in order to research the retrofitting measures of religious buildings.The FEM(finite element method) was adopted to set up the numerical model of this ancient building by taking the nonlinear boundary into account.The self-vibrating behavior of the structure was analyzed to prove the validity of the numerical model.The deformation,base shear and internal force of its members before and after retrofitting were investigated by the transient dynamic analysis.The research results indicate that a flexible boundary can form a rigid-flexible system,harmonize the deformation of the two types of members well and improve the aseismatic behavior significantly.
An investigation was carried out on the Jushi building being retrofitted in the Shangqing Temple on the Qingcheng Mountain in order to research the retrofitting measures of religious buildings.The FEM(finite element method) was adopted to set up the numerical model of this ancient building by taking the nonlinear boundary into account.The self-vibrating behavior of the structure was analyzed to prove the validity of the numerical model.The deformation,base shear and internal force of its members before and after retrofitting were investigated by the transient dynamic analysis.The research results indicate that a flexible boundary can form a rigid-flexible system,harmonize the deformation of the two types of members well and improve the aseismatic behavior significantly.
引文
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[2]李诫.营造法式[M].北京:中国书店出版社,2006:21-29.
[3]梁思成.梁思成全集(第6,7卷)[M].北京:中国建筑工业出版社,2001:36-42.
[4]BATHE K J.Finite element procedures in engineeringanalysis[M].New Jersey:Prentice-Hall Inc,1996:538.
[5]方东平,俞茂鋐,宫本裕,等.木结构古建筑结构特性的计算研究[J].工程力学,2001,18(1):137-144.FANG Dongping,YU Maohong,GONG Benyu,et al.Numerical analysis on structural characteristics ofancient timber architecture[J].Engineering Mecha-nics,2001,18(1):137-144.
[6]WILSON E L.Static and dynamic analysis of structures[M].北京:中国建筑工业出版社,2006:213-214.
[7]BATHE K J,WILSON E L.有限元分析中的数值方法[M].北京:科学出版社,1985:47-58.
[8]四川省建筑科学研究院.GB 50165-92古建筑木结构维护与加固技术规范[S].北京:中国建筑工业出版社,1993.
[9]汪兴毅,杨智良.殿堂型木构架古建筑的抗震构造研究[J].合肥工业大学学报:自然科学版,2007,30(10):1349-1352.WANG Xingyi,YANG Zhiliang.Research on asei-smatic construction of ancient timber-framed halls[J].Journal of Hefei University of Technology:NaturalScience,2007,30(10):1349-1352.
[10]张鹏程,赵鸿铁,薛金阳,等.斗拱结构功能试验研究[J].世界地震工程,2003,19(1):102-106.ZHANG Pengcheng,ZHAO Hongtie,XUE Jinyang,etal.Experiment research on structural performance ofDougong[J].World Earthquake Engineering,2003,19(1):102-106.
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