填充墙对框架结构侧移及层间位移角影响分析
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摘要
为了研究填充墙对框架结构侧移和层间侧移角的影响特点,给结构设计提供参考和建议,建立了29个带填充墙的框架结构有限元分析模型,输入3种不同的地震波进行了时程分析。填充墙体对框架结构抗侧移大小和层间侧移角的影响不容忽略,影响其大小的因素主要有填充墙体材料、数量、位置以及计算时地震波的选用。为避免由于填充墙体布置不当造成所谓的"薄弱层",建议本层填充墙体数量不得小于其上部楼层的60%。最后,给出了考虑填充墙体作用的结构刚度计算公式。
In order to know the influence of infilled walls to lateral displacement and interstorey drift angle of RC frame.29 finite element models of the RC frame with infilled walls are established,and the time-history analyses of the models under 3 different types of earthquake waves have been achieved.The results show that the influence of infilled walls on the RC frame can not be ignored,and the main influencing factors are of material,quantity,location of the infilled walls and the selection of earthquake waves.To avoid the weak storey causing by improper arrangement of infilled walls,it is suggested that the number of the infilled walls on the storey should not be less than 60% of its upper storey infilled walls.The formula about the structural stiffness for the RC frame with infilled walls is proposed.
In order to know the influence of infilled walls to lateral displacement and interstorey drift angle of RC frame.29 finite element models of the RC frame with infilled walls are established,and the time-history analyses of the models under 3 different types of earthquake waves have been achieved.The results show that the influence of infilled walls on the RC frame can not be ignored,and the main influencing factors are of material,quantity,location of the infilled walls and the selection of earthquake waves.To avoid the weak storey causing by improper arrangement of infilled walls,it is suggested that the number of the infilled walls on the storey should not be less than 60% of its upper storey infilled walls.The formula about the structural stiffness for the RC frame with infilled walls is proposed.
引文
[1]清华大学,西南交通大学,北京交通大学土木工程结构专家组.汶川地震建筑震害分析[J].建筑结构学报,2008,29(4):1-9.Civil and structural groups of Tsinghua University,Xinan Jiaotong University and Beijing Jiaotong University.Analysis on building seismic damagein Wenchuan earthquake[J].Journal of Building Structures,2008,29(4):1-9.
[2]施耀新.砖填充墙框架房屋的抗震设计研究[J].建筑技术通讯建筑结构分册,1980,6:10-15.Shi Yaoxin.Study on seismic design of frame-wall structure filled with masonry[J].Architecture Technology Communication,Partial Book ofBuilding Structure,1980,6:10-15.
[3]李常青,易伟建,刘应龙.忽略填充墙刚度对框架结构的抗震安全性能的影响[J].湖南城市学院学报,2003,24(6):14-16.Li Changqing,Yi Weijian,Liu Yinglong.Neglecting the effect of safety assessment of the infilled walls rigidity to the quakeproof of infilled framesdesign[J].Journal of Hunan City University,2003,24(6):14-16.
[4]周优文,李宏,欧阳光.考虑填充墙影响的底层薄弱结构抗震性能研究[J].四川建筑科学研究,2006,32(2):121-123.Zhou Youwen,Li Hong,Ouyang Guang.Study on aseismic behavior of frame structure with weakness story at bottom considering filled-wall influ-ence[J].Sichuan Building Science,2006,32(2):121-123.
[5]张艳敏,姚谦峰.水平地震作用下填充墙框架结构的刚度计算[J].山西建筑,2004,30(1):9-10.Zhang Yanmin,Yao Qianfeng.Rigidity calculation of framewall structure filled with masonry under horizontal earthquake[J].Shanxi Architecture,2004,30(1):9-10.
[6]苏启旺,李力.汶川大地震中框架结构震害分析[J].四川建筑科学研究,2008,34(4):162-164.Su Qiwang,Li Li.Analysis on frame structure seismic Damage in Wenchuan earthquake[J].Sichuan Building Science,2008,34(4):162-164.
[7]刘冬柏,王安玲.基于汶川地震房屋建筑破坏特征的几点启示[J].中外建筑,2008,14(9):21-26.Liu Dongbai,Wang Anling.Several revelations Based on the Wenchuan earthquake damaged housing construction characteristics[J].Chinese andOverseas Architecture,2008,14(9):21-26.
[8]李建中,吕西林,李翔,等.汶川地震中钢筋混凝土框架结构的震害[J].结构工程师,2008,24(3):9-11.Li Jianzhong,LXilin,Li Xiang,et al.Seismic damage of reinforced concrete frame structure in Wenchuan earthquake[J].Structural Engineers,2008,24(3):9-11.
[9]GBJ11-89,建筑抗震设计规范[S].GBJ11-89,Code for Seismic Design of Buildings[S].
[10]GBS0011-2001,建筑抗震设计规范[S].GB50011-2001,Code for Seismic Design of Buildings[S].
[11]JGJ3-2002,高层建筑混凝土结构技术规程[S].JGJ3-2002,Technical Specification for Concrete Structures f Tall Buildings[S].
[12]朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998.Zhu Bofang.Principle and Application of Finite Element[M].Beijing:China Water Conservation and Electricity Press,1998.
[2]施耀新.砖填充墙框架房屋的抗震设计研究[J].建筑技术通讯建筑结构分册,1980,6:10-15.Shi Yaoxin.Study on seismic design of frame-wall structure filled with masonry[J].Architecture Technology Communication,Partial Book ofBuilding Structure,1980,6:10-15.
[3]李常青,易伟建,刘应龙.忽略填充墙刚度对框架结构的抗震安全性能的影响[J].湖南城市学院学报,2003,24(6):14-16.Li Changqing,Yi Weijian,Liu Yinglong.Neglecting the effect of safety assessment of the infilled walls rigidity to the quakeproof of infilled framesdesign[J].Journal of Hunan City University,2003,24(6):14-16.
[4]周优文,李宏,欧阳光.考虑填充墙影响的底层薄弱结构抗震性能研究[J].四川建筑科学研究,2006,32(2):121-123.Zhou Youwen,Li Hong,Ouyang Guang.Study on aseismic behavior of frame structure with weakness story at bottom considering filled-wall influ-ence[J].Sichuan Building Science,2006,32(2):121-123.
[5]张艳敏,姚谦峰.水平地震作用下填充墙框架结构的刚度计算[J].山西建筑,2004,30(1):9-10.Zhang Yanmin,Yao Qianfeng.Rigidity calculation of framewall structure filled with masonry under horizontal earthquake[J].Shanxi Architecture,2004,30(1):9-10.
[6]苏启旺,李力.汶川大地震中框架结构震害分析[J].四川建筑科学研究,2008,34(4):162-164.Su Qiwang,Li Li.Analysis on frame structure seismic Damage in Wenchuan earthquake[J].Sichuan Building Science,2008,34(4):162-164.
[7]刘冬柏,王安玲.基于汶川地震房屋建筑破坏特征的几点启示[J].中外建筑,2008,14(9):21-26.Liu Dongbai,Wang Anling.Several revelations Based on the Wenchuan earthquake damaged housing construction characteristics[J].Chinese andOverseas Architecture,2008,14(9):21-26.
[8]李建中,吕西林,李翔,等.汶川地震中钢筋混凝土框架结构的震害[J].结构工程师,2008,24(3):9-11.Li Jianzhong,LXilin,Li Xiang,et al.Seismic damage of reinforced concrete frame structure in Wenchuan earthquake[J].Structural Engineers,2008,24(3):9-11.
[9]GBJ11-89,建筑抗震设计规范[S].GBJ11-89,Code for Seismic Design of Buildings[S].
[10]GBS0011-2001,建筑抗震设计规范[S].GB50011-2001,Code for Seismic Design of Buildings[S].
[11]JGJ3-2002,高层建筑混凝土结构技术规程[S].JGJ3-2002,Technical Specification for Concrete Structures f Tall Buildings[S].
[12]朱伯芳.有限单元法原理与应用[M].北京:中国水利水电出版社,1998.Zhu Bofang.Principle and Application of Finite Element[M].Beijing:China Water Conservation and Electricity Press,1998.
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