Journal of South China University of Technology (Natural Science Edition) ›› 2006, Vol. 34 ›› Issue (7): 94-98.

• Architecture & Civil Engineering • Previous Articles     Next Articles

Seismic Torsional Response of Base-Isolated Structure with Frame-Shear Wall

Yuan Bing1  Huang Yan-sheng2  Ren Li-fei2  Liang Fang-hui2   

  1. 1.Faculty of Construction,Guangdong Univ.of Tech.,Guangzhou 510006,Guangdong,China; 2.College of Architecture and Civil Engineering,South China Univ.of Tech.,Guangzhou 510640,Guangdong,China
  • Received:2006-03-03 Online:2006-07-25 Published:2006-07-25
  • Contact: 袁兵(1969-)，女，硕士，讲师，主要从事工程力学及其相关领域的研究． E-mail:yuanbing.cn@tom.com
  • About author:袁兵(1969-)，女，硕士，讲师，主要从事工程力学及其相关领域的研究．
  • Supported by:

    广东省自然科学基金资助项目(032489)；广州市科技攻关资助项目(2003Z3—D0221)

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Abstract:

In order to investigate the seismic torsional response of base-isolated structures with frame-shear walls,the lateral-torsion coupling vibration model and the corresponding motion equation are formulated for the high-storey structure with frame-shear wall and isolated foundation under seismic action. The lateral-torsion eoupling seismic response of the uniaxial-eccentricity base-isolated structure is then analyzed,and the seismic responses of several base-isolated structures with various eccentricity ratios are discussed. The results show that the eccentricitv ratio of the superstructure to the base-isolated layer should be reasonably adjusted in the design of a structure,and that the torsional response of the base-isolated structure can be obviously reduced only when the eccentricity ratio satisfies a certain condition.

Key words: frame-shear wall, base isolation, lateral-torsion coupling, eccentricity ratio