剪力墙布置对板柱-剪力墙结构扭转效应的影响
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摘要
对4种剪力墙典型布置方案的板柱-剪力墙结构进行有限元分析,研究了其动力特性,扭平周期比及在考虑偶然偏心影响的地震作用下楼层的扭转位移比,评价了剪力墙布置对此类结构扭转效应的影响.研究结果表明:剪力墙集中布置在中部时,结构的抗侧刚度较大,分散布置于周边时,结构的抗扭刚度较大;结构楼层的扭转位移比与沿受力方向质心与刚心是否重合及结构抗扭刚度两方面因素有关,质心与刚心是否重合对结构扭转效应的影响更为明显.
Finite element analysis is applied to the slab-olumn and shearwall structure of four kinds of typical shear walls.The dynamic characteristics,the ratios of torsion periods to translation periods and the ratio of maximal elastic drifts to average drifts are investigated when the earthquake action and the condition of the accidental eccentric influence are considered.The influence of the torsion response on the shear walls arranged in slab-column and shearwall structure is assessed.The results show that the lateral rigidity of the structure is bigger,when the shear walls are arranged in the middle,and when they are arranged in the edge,the torsion stiffness of the structure is bigger.The ratios of each story maximal elastic drifts to average drifts are in connection with the torsion stiffness of the structure and the question whether the center of quality and the center of stiffness along stress direction are coincident or not.The former has more influence on the torsion response of structure.
Finite element analysis is applied to the slab-olumn and shearwall structure of four kinds of typical shear walls.The dynamic characteristics,the ratios of torsion periods to translation periods and the ratio of maximal elastic drifts to average drifts are investigated when the earthquake action and the condition of the accidental eccentric influence are considered.The influence of the torsion response on the shear walls arranged in slab-column and shearwall structure is assessed.The results show that the lateral rigidity of the structure is bigger,when the shear walls are arranged in the middle,and when they are arranged in the edge,the torsion stiffness of the structure is bigger.The ratios of each story maximal elastic drifts to average drifts are in connection with the torsion stiffness of the structure and the question whether the center of quality and the center of stiffness along stress direction are coincident or not.The former has more influence on the torsion response of structure.
引文
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[2]崔峰,戴国亮,蒋永生,等.带填充墙的新型梁柱-板柱组合结构振动试验研究[J].东南大学学报:自然科学版,2002,32(3):460-465.Cui Feng,Dai Guoliang,Jiang Yongsheng.Shakingtable study on the new resident system of frame suppor-ted flat plate structure with considered the influence offiller wall[J].Journal of Southeast University:NaturalScience,2002,32(3):460-465.(in Chinese)
[3]郭楠,郭轶宏,赵婷婷.板柱-剪力墙结构抗震性能分析[J].沈阳建筑大学学报:自然科学版,2010,26(6):1058-1065.Guo Nan,Guo Yihong,Zhao Tingting.Seismic analy-sis on slab-column and shearwall structure[J].Jour-nal of Shenyang Jianzhu University:Natural Science,2010,26(6):1058-1065.(in Chinese)
[4]刘劲松,裘涛,王翠坤,等.某复杂体型高层建筑模型结构振动台试验研究[J].工业建筑,2008,38(7):12-15.Liu Jinsong,Qiu Tao,Wang Cuikun,et al.Shakingtable experimental study on an irregular tall buildingstructure[J].Industrial Construction,2008,38(7):12-15.(in Chinese)
[5]郭楠,郭轶宏,杨颖伟.板柱-剪力墙结构适用高度研究[J].沈阳建筑大学学报:自然科学版,2011,27(1):79-83.Guo Nan,Guo Yihong,Yang Yingwei.Study of suit-able height of slab-column and shearwall structure[J].Journal of Shenyang Jianzhu University:Natural Sci-ence,2011,27(1):79-83.(in Chinese)
[6]沈蒲生,刘杨,孟焕陵.框架-剪力墙结构扭转计算方法[J].重庆建筑大学学报,2007,29(1):61-64.Shen Pusheng,Liu Yang,Meng Huanling.Calculationmethod of torsion effect in frame-shear wall structures[J].Journal of Chongqing Jianzhu University,2007,29(1):61-64.(in Chinese)
[7]郭楠,郑文忠.板-柱结构抗震性能研究[J].沈阳建筑大学学报:自然科学版,2008,24(5):729-736.Guo Nan,Zheng Wenzhong.Research on seismic be-havior of plate-column structure[J].Journal of Sheny-ang Jianzhu University:Natural Science,2008,24(5):729-736.(in Chinese)
[8]董欣,吴强.板柱-剪力墙结构的动力特性分析[J].世界地震工程,2007,23(1):130-133.Dong Xin,Wu Qiang.The dynamic characteristicsanalysis of R/C slab column-shear wall structures[J].World Earthquake Engineering,2007,23(1):130-133.(in Chinese)
[9]凯里,张耀庭.平面L形框剪结构剪力墙布置方案[J].土木工程与管理学报,2011,28(3):138-142.Kai Li,Zhang Yaoting.Study on layout of shear wallsin the structure with L-shaped plane[J].Journal ofCivil Engineering and Management,2011,28(3):138-142.(in Chinese)
[10]夏晔.抗侧力构件截面形式与布置对高层对高层结构扭转性能的影响[J].中外建筑,2006(3):94-95.Xia hua.Influence of lateral load resisting elements'section types and arrangement to the torsion property ofhigh-rise building[J].Chinese and Overseas Architec-ture,2006(3):94-95.(in Chinese)
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