中国古木结构建筑基于位移的抗震加固方法研究
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摘要
提出了古木结构建筑采用基于位移的抗震加固方法,通过限制水平地震作用下结构的最大侧移和最大滑移而防止结构倒塌,其中最大侧移限值由结构的最大水平惯性力及其自身抗倾覆条件确定,最大滑移限值为柱基础半径。根据最大侧移限值并考虑古木结构建筑的特殊性,确定了在罕遇地震作用下的目标位移角及相应的目标刚度。最后分析了构架刚度下对古木结构建筑侧移和滑移的影响,认为适当加大刚度对建筑是有利的。研究结果可为古木建筑的抗震加固提供科学依据。
Displacement-based seismic strengthening method for Chinese ancient timber buildings(CATB)is proposed to prevent collapse,which is for limiting the maximum lateral displacement and sliding displacement of the building under horizontal earthquake.The maximum limited lateral displacement is based on the maximum horizontal inertia force and turning moment resistance capacity of the building,and the radius of plinth of the building is specified as the maximum limited sliding displacement.The target displacement angle and target rigidity are defined according to the maximum limited lateral displacement and the peculiarity of CATB.The influence of stiffness of the building to the lateral displacement and sliding displacement is analyzed,and the result shows that it is benefit to CATB to appropriately increase the lateral stiffness.It provides theoretical base for the seismic strengthening of CATB.
Displacement-based seismic strengthening method for Chinese ancient timber buildings(CATB)is proposed to prevent collapse,which is for limiting the maximum lateral displacement and sliding displacement of the building under horizontal earthquake.The maximum limited lateral displacement is based on the maximum horizontal inertia force and turning moment resistance capacity of the building,and the radius of plinth of the building is specified as the maximum limited sliding displacement.The target displacement angle and target rigidity are defined according to the maximum limited lateral displacement and the peculiarity of CATB.The influence of stiffness of the building to the lateral displacement and sliding displacement is analyzed,and the result shows that it is benefit to CATB to appropriately increase the lateral stiffness.It provides theoretical base for the seismic strengthening of CATB.
引文
[1]GB50165-92,古建筑木结构维护与加固技术规范[S].GB50165-92,Technical code for maintenance and strengthening of ancient timber buildings[S].
[2]GB50011-2001,建筑抗震设计规范[S].GB50011-2001,Code for seismic design of buildings[S].
[3]王优龙,魏琏,李康祺,等.隔震技术的研究与应用[M].北京:地震出版社,1991.Wang Youlong,Wei Lian,Li kangqi,et al..Research and Application of Isolation Technology[M].Beijing:Seismological Press,1991.
[4]张鹏程.中国古代木构建筑结构及其抗震发展研究[D].西安:西安建筑科技大学,2003.Zhang Pengcheng.Study on structure and its seismic behavior development of Chinese ancient timber structure buildings[D].Xi’an:Xi’an Univ.of Arch.&Tech.,2003.
[5]姚侃.木结构古建筑的结构特性及抗震性能研究[D].西安:西安建筑科技大学,2006.Yao Kan.Study on the structural properties and seismic performance of Chinese historical timber buildings[D].Xi’an:Xi’an Univ.of Arch.&Tech.,2006.
[6]李诫(宋)著.营造法式[M].上海:商务印书馆,1950.Li Jie(Dynasty Song).Fabrication Methods of Song Dynasty[M].Shanghai:The Commercial Press,1950.
[7]谢启芳,赵鸿铁,薛建阳,等.中国古建筑木结构榫卯节点加固的试验研究[J].土木工程学报,2008,41(1):28-34.Xie Qifang,Zhao Hongtie,Xue Jianyang,et al..Experimental study on the strengthening of mortise-tenon joint in Chinese ancient wooden build-ings[J].China Civil Engineering Journal,2008,41(1):28-34.
[2]GB50011-2001,建筑抗震设计规范[S].GB50011-2001,Code for seismic design of buildings[S].
[3]王优龙,魏琏,李康祺,等.隔震技术的研究与应用[M].北京:地震出版社,1991.Wang Youlong,Wei Lian,Li kangqi,et al..Research and Application of Isolation Technology[M].Beijing:Seismological Press,1991.
[4]张鹏程.中国古代木构建筑结构及其抗震发展研究[D].西安:西安建筑科技大学,2003.Zhang Pengcheng.Study on structure and its seismic behavior development of Chinese ancient timber structure buildings[D].Xi’an:Xi’an Univ.of Arch.&Tech.,2003.
[5]姚侃.木结构古建筑的结构特性及抗震性能研究[D].西安:西安建筑科技大学,2006.Yao Kan.Study on the structural properties and seismic performance of Chinese historical timber buildings[D].Xi’an:Xi’an Univ.of Arch.&Tech.,2006.
[6]李诫(宋)著.营造法式[M].上海:商务印书馆,1950.Li Jie(Dynasty Song).Fabrication Methods of Song Dynasty[M].Shanghai:The Commercial Press,1950.
[7]谢启芳,赵鸿铁,薛建阳,等.中国古建筑木结构榫卯节点加固的试验研究[J].土木工程学报,2008,41(1):28-34.Xie Qifang,Zhao Hongtie,Xue Jianyang,et al..Experimental study on the strengthening of mortise-tenon joint in Chinese ancient wooden build-ings[J].China Civil Engineering Journal,2008,41(1):28-34.
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