剪力墙高宽比对底部框剪砌体结构抗震性能的影响
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摘要
针对7度设防地区的底部框剪砌体结构,采取不同的剪力墙高宽比,用非线性时程分析的方法,对该结构在不同地震动强度下的地震反应进行分析.对比不同高宽比下该结构的层间最大剪力、各层最大相对位移以及各层最大加速度.结果表明:随着剪力墙高宽比的适当加大,建筑物的地震反应呈现出均匀性减小.
This paper researches on the influence of aspect ratio on aseismic behavior of masonry structure with bottom frame shear walls.In view of the masonry structures with bottom frame shear walls in the 7 degree seismic fortification intensity region,the structure’s earthquake responses at various seismic intensities were analyzed by using different aspect ratios and nonlinear time history analysis;and then a comparative analysis was done between the maximum inter-floor shear forces,the maximum relative displacements and maximum accelerations of each floor,at different aspect ratios of the structure.The results show that with the gradual increase of shear walls’ aspect ratio,the building's earthquake response steadily decreases.
This paper researches on the influence of aspect ratio on aseismic behavior of masonry structure with bottom frame shear walls.In view of the masonry structures with bottom frame shear walls in the 7 degree seismic fortification intensity region,the structure’s earthquake responses at various seismic intensities were analyzed by using different aspect ratios and nonlinear time history analysis;and then a comparative analysis was done between the maximum inter-floor shear forces,the maximum relative displacements and maximum accelerations of each floor,at different aspect ratios of the structure.The results show that with the gradual increase of shear walls’ aspect ratio,the building's earthquake response steadily decreases.
引文
[1]陈红秋,钟文乐,陈冬梅,等.底部两层框架砖房抗震性能研究[J].建筑结构,2001,31(3):58-61.
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[8]张智锋,商伟鹏,耿巍.关于侧向刚度比在结构设计应用中的理解[J].建筑设计管理,2010,27(6):34-35.
[9]郑灵敏,潘宏伟.底框结构设计中需要注意的问题[J].浙江建筑,2006,23(10):20-21.
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[11]汪梦甫,周锡元.钢筋混凝土剪力墙单元非线性分析模型及其应用[J].力学季刊,2002,23(1):1-8.
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[13]GB50011—2001.建筑抗震设计规范[S].
[2]郑山锁,杨勇,赵鸿铁.底部框剪砌体房屋抗震性能的试验研究[J].土木工程学报2004,37(5):23-31.
[3]刘航,蓝宗建,梁书亭,等.底层框架多层砖房模型振动台试验研究[J].东南大学学报,1996,26(5):131-136.
[4]熊立红.多层混凝土砌块结构性态抗震研究[D].哈尔滨:中国地震局工程力学研究所,2004.
[5]包世华.结构动力学[M].武汉:武汉理工大学出版社,2005.
[6]高振世.建筑结构抗震设计[M].北京:中国建筑工业出版社,1995.
[7]陈伯望,陈郁周,王建平.底部框架-抗震墙房屋抗震墙简化设计[J].建筑结构,2004,34(9):58-59.
[8]张智锋,商伟鹏,耿巍.关于侧向刚度比在结构设计应用中的理解[J].建筑设计管理,2010,27(6):34-35.
[9]郑灵敏,潘宏伟.底框结构设计中需要注意的问题[J].浙江建筑,2006,23(10):20-21.
[10]龚思礼.建筑抗震设计手册[M].北京:中国建筑工业出版社,2002.
[11]汪梦甫,周锡元.钢筋混凝土剪力墙单元非线性分析模型及其应用[J].力学季刊,2002,23(1):1-8.
[12]胡聿贤.地震工程学[M].北京:地震出版社,2002.
[13]GB50011—2001.建筑抗震设计规范[S].
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