板柱-剪力墙结构抗震性能分析
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摘要
目的探讨板柱-剪力墙结构的抗震性能,推广其在抗震区应用.方法采用三维实体单元建模,对无边梁,设边梁的板柱-剪力墙结构及框架-剪力墙结构进行弹塑性时程分析.结果对比了三种结构的基底剪力及顶点侧移时程曲线,塑性铰出铰及能量耗散情况,研究了地震波加速度大小对结构地震响应的影响,给出了Taft波激励下结构的倒塌机制和相应的地震波加速度峰值.结论建造在Ⅰ～Ⅲ类场地上的,合理设计的9层板柱-剪力墙结构在8度罕遇地震作用下的最大弹塑性层间位移角小于1/100,结构未形成倒塌机制.Taft波激励下,结构形成倒塌机制时所对应的地震烈度在10度以上,设边梁板柱-剪力墙结构的抗震性能和框架-剪力墙结构比较接近.
The purpose of this paper is to study the seismic behavior of slab-column and shearwall structure to popularize it in seismic region.Using three-dimensional models,nonlinear time-history analysis of slab-column and shearwall structure without and with edge beams,and frame-shearwall structure are carried out.The analy-sis results give the comparison of time-history curves of base shear and top drift,conditions of plastic hinges distribution and energy dissipation among different structures.Besides,the effect of soil site conditions and the size of seismic wave acceleration on the structural seismic response were researched,and failure mechanisms subjected to Taft wave and the corresponding maximal acceleration value were given.The conclusion shows that for 9-story slab-column-shearwall structure designed suitably which is built in Ⅰ ～ Ⅲ soil site and under rare earthquake of intensity 8,the maximum elastic-plastic story drift angle is less than one percent and no failure mechanisms is formed.Under Taft waves,the seismic intensity which causes the failure mechanisms is more than 10,and the seismic behavior of slab-column-shearwall structure with edge beams is similar to that of the frame-shearwall structure.
The purpose of this paper is to study the seismic behavior of slab-column and shearwall structure to popularize it in seismic region.Using three-dimensional models,nonlinear time-history analysis of slab-column and shearwall structure without and with edge beams,and frame-shearwall structure are carried out.The analy-sis results give the comparison of time-history curves of base shear and top drift,conditions of plastic hinges distribution and energy dissipation among different structures.Besides,the effect of soil site conditions and the size of seismic wave acceleration on the structural seismic response were researched,and failure mechanisms subjected to Taft wave and the corresponding maximal acceleration value were given.The conclusion shows that for 9-story slab-column-shearwall structure designed suitably which is built in Ⅰ ～ Ⅲ soil site and under rare earthquake of intensity 8,the maximum elastic-plastic story drift angle is less than one percent and no failure mechanisms is formed.Under Taft waves,the seismic intensity which causes the failure mechanisms is more than 10,and the seismic behavior of slab-column-shearwall structure with edge beams is similar to that of the frame-shearwall structure.
引文
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[9]Maleki A,Ziyaeifar M.Damping enhancement of seis-mic isolated cylindrical liquid storage tanks using baf-fles[J].Engineering Structures,2007,29(12):3227-3240.
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[11]Zhu Xueye,Pekau O A.Seismic behavior of concretegravity dams with penetrated cracks and equivalentimpact damping[J].Engineering Structures,2007,29(3):336-345.
[12]Zheng Wenzhong,Ji Jing.Dynamic performance of an-gle-steel concrete columns under low cyclic loading-I:Experimental study[J].Earthquake Engineeringand Engineering Vibration,2008,7(1):67-75.
[13]Zheng Wenzhong,Ji Jing.Dynamic performance of an-gle-steel concrete columns under low cyclic loading-II:parametric study[J].Earthquake Engineeringand Engineering Vibration,2008,7(2):137-146.
[14]Lee D G,Choi W H,Cheong M C,et al.Evaluation ofseismic performance of multistory building structuresbased on the equivalent responses[J].EngineeringStructures,2006,28(6):837-856.
[15]吴强,艾军,陈少林,等.板柱-剪力墙结构抗震的弹塑性时程分析及失效模拟[J].振动与冲击,2007,26(11):95-98.(Wu Qiang,AI Jun,Chen Shaolin,et al.Elastic-plastic time history analysis and failure simulation forseismic response of slab column-shear wall struc-tures[J].Journal of Vibration and Shock,2007,26(11):95-98.)
[2]蒋永生,梁书亭,陈德文,等.新型梁柱-板柱组合结构(住宅)体系的试验研究[J].土木工程学报,2005,38(10):5-13.(Jiang Yongsheng,Liang Shuting,Chen Dewen,et al.An experimental study on the new residential systemof frame supported flat plate composite structures[J].China Civil Engineering Journal,2005,38(10):5-13.)
[3]王必刚.板柱结构静力弹塑性分析及试验研究[D].杭州:浙江大学土木工程学院,2007:33-48.(Wang Bigang.Nonlinear static analysis and test re-search on slab-column structure[D].Hangzhou:Zhejiang University.School of Civil Engineering,2007:33-48.)
[4]董欣.板柱-剪力墙结构的地震反应分析[D].南京:南京航空航天大学土木工程学院,2007:33-49.(Dong Xin.Seismic response analysis of slab column-shear wall structures[D].NanJing:Nanjing Univer-sity of Aeronautics and Astronautics.School of of Aer-ospace Engineering,2007:33-48.)
[5]Sahab M G,Ashour A F,Toropov V V.A hybrid ge-netic algorithm for reinforced concrete flat slab build-ings[J].Computers and Structures,2005,83(8/9):551-559.)
[6]Peter G,Milan J.Damage-plastic model for concretefailure[J].International Journal of Solids and Struc-tures,2006,43:7166-7196.
[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 She-nyang Jianzhu University:Natural Science,2008,24(5):729-736.)
[8]王亚勇,刘小弟,程民宪.建筑结构时程分析法输入地震波的研究[J].建筑结构学报,1991,12(2):51-60.(Wang Yayong,Liu Xiaodi,Cheng Minxian.Study onthe input of earthquake ground motion for time-histo-ry analysis of structures[J].China Academy of Build-ing Research,1991,12(2):51-60.)
[9]Maleki A,Ziyaeifar M.Damping enhancement of seis-mic isolated cylindrical liquid storage tanks using baf-fles[J].Engineering Structures,2007,29(12):3227-3240.
[10]Lu Binggeng,Pedro S F.Estimating equivalent viscousdamping ratio for RC members under seismic andblast loadings[J].Mechanics Research Communica-tions,2006,33(6):787-795.
[11]Zhu Xueye,Pekau O A.Seismic behavior of concretegravity dams with penetrated cracks and equivalentimpact damping[J].Engineering Structures,2007,29(3):336-345.
[12]Zheng Wenzhong,Ji Jing.Dynamic performance of an-gle-steel concrete columns under low cyclic loading-I:Experimental study[J].Earthquake Engineeringand Engineering Vibration,2008,7(1):67-75.
[13]Zheng Wenzhong,Ji Jing.Dynamic performance of an-gle-steel concrete columns under low cyclic loading-II:parametric study[J].Earthquake Engineeringand Engineering Vibration,2008,7(2):137-146.
[14]Lee D G,Choi W H,Cheong M C,et al.Evaluation ofseismic performance of multistory building structuresbased on the equivalent responses[J].EngineeringStructures,2006,28(6):837-856.
[15]吴强,艾军,陈少林,等.板柱-剪力墙结构抗震的弹塑性时程分析及失效模拟[J].振动与冲击,2007,26(11):95-98.(Wu Qiang,AI Jun,Chen Shaolin,et al.Elastic-plastic time history analysis and failure simulation forseismic response of slab column-shear wall struc-tures[J].Journal of Vibration and Shock,2007,26(11):95-98.)
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