剪力墙结构对等效地震动输入的影响
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摘要
采用ANSYS软件建立了考虑土-剪力墙结构相互作用的二维时域动力计算模型,分别考虑了不同土体、上部结构层数对等效输入的影响。根据计算结果,上述因素对等效输入的平动影响不大,但对基础的转动影响很大。特别地,桩基对基础的转动角位移影响很大。因此,分析土-结构相互作用的等效输入,应着重研究基础的转动输入。
Two-dimensional dynamic model of soil-structure interaction of shear wall structures in time domain is established with ANSYS.The influence of different soils and stories of upper structures on equivalent seismic motion input is considered separately.According to calculations,the above-mentioned factors have little effect on the horizontal displacement time-histories of the equivalent input,but have great influence on the rotation of foundation.Especially,piles have great effect on the rotation angle displacement of foundation.Therefore,the analysis of equivalent input of soil-structure interaction should be focused on research of foundation rotation.
Two-dimensional dynamic model of soil-structure interaction of shear wall structures in time domain is established with ANSYS.The influence of different soils and stories of upper structures on equivalent seismic motion input is considered separately.According to calculations,the above-mentioned factors have little effect on the horizontal displacement time-histories of the equivalent input,but have great influence on the rotation of foundation.Especially,piles have great effect on the rotation angle displacement of foundation.Therefore,the analysis of equivalent input of soil-structure interaction should be focused on research of foundation rotation.
引文
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[2]王开顺,王有为,李林友.土与结构相互作用地震反应研究及实用计算[J].建筑结构学报,1986,7(2):64-76.Wang Kaishun,Wang Youwei,Li Linyou.Seismic response of soil-structure interaction and its practical calculation[J].Journal of Building Struc-tures,1986,7(2):64-76.
[3]李辉,赖明,白绍良.土-结动力相互作用研究综述(Ⅲ)-考虑SSDI效应的结构抗震设计[J].重庆建筑大学学报,2000,22(1):119-123.Li Hui,Lai Ming,Bai Shaoliang.A summary of research on soil-structure dynamic interaction(Ⅲ)-structural seismic design.Journal of ChongqingJianzhu University[J].2000,22(1):119-123.
[4]熊卓卓,丁海平.大型基础等效输入地震波研究[J].世界地震工程,2009,25(3):74-80.Xiong Zhuozhuo,Ding Haiping.Study of the equivalent input seismic waves on the large-scale foundation[J].World Earthquake Engineering,2009,25(3):74-80.
[5]日本铁道技术综合研究所.铁道构造物等设计标准同解说,耐震设计[M].东京:日本铁道技术综合研究所,1999.鉄道総合技術研究所.鉄道構造物等設計標準.同解説,耐震設計[M].鉄道総合技術研究所,1999.
[6]孔戈,丁海平,金星,等.多次透射边界在ANSYS软件中的应用[J].工程抗震与加固改造,2005,27(2):67-71.Kong Ge,Ding Haiping,Jin Xing,et al.The application of multi-transmitting boundary in ANSYS[J].Earthquake Resistant Engineering and Ret-rofitting,2005,27(2):67-71.
[7]廖振鹏.工程波动理论导论[M].2版.北京:科学出版社,1996.Liao Zhenpeng.Introduction to Wave Motion Theories for Engineering[M].Beijing:Science Press.1996.
[8]陈清军,姜文辉,楼梦麟.群桩基础三维非线性地震反应分析[J].振动与冲击,2003,22(3),98-101.Chen Qingjun,Jiang Wenhui,Lou Menglin.3D nonlinear response analysis of pile group under seismic loading[J].Journal of Vibration andShock,2003,22(3),98-101.
[9]陈波,吕西林,李培振,等.用ANSYS模拟结构-地基动力相互作用振动台试验的建模方法[J].地震工程与工程振动,2002,22(1):126-131.Chen Bo,L櫣Xilin,Li Peizhen,et al.Modeling of dynamic soil-structure interaction by ANSYS program[J].Journal of Earthquake Engineering andEngineering Vibration,2002,22(1):126-131.
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