Lateral-torsional coupled seismic response of sliding base-isolated structuresdue to the eccentric superstructure

PDF(1708 KB)

Journal of Vibration and Shock ›› 2009, Vol. 28 ›› Issue (12) : 96-100.

论文

Lateral-torsional coupled seismic response of sliding base-isolated structuresdue to the eccentric superstructure

Wang Jian-qiang1;Ding Yong-gang2;Li Da-wang3

Author information +

History +

Abstract

Lateral-torsional coupled seismic response of sliding base-isolated structures under bi-axial ground excitations is carried out. The influence of eccentricity and torsional stiffness in the superstructure is studied. It is shown that the influence of the mass eccentricity in the superstructure is more remarkable than that of the stiffness eccentricity in the superstructures. The seismic response of the base-isolated structure can be effectively diminished by decreasing the mass eccentricity in the superstructure. Even though the mass eccentricity is small, the influence of which should be take into account in the design of the base-isolated structure. The torsional stiffness of the superstructure has great impact on the response of the superstructure than which on the response of the isolation layer. Seismic response of the superstructure can be effectively diminished by increasing the torsional stiffness of superstructure.

Key words

base-isolated structure / restrict-sliding bearing / mass eccentricity in the superstructure / stiffness eccentricity in the superstructure / torsional stiffness of the superstructrue

Cite this article

EndNote

Ris (Procite)

Bibtex

Download Citations

Wang Jian-qiang;Ding Yong-gang;Li Da-wang. Lateral-torsional coupled seismic response of sliding base-isolated structuresdue to the eccentric superstructure[J]. Journal of Vibration and Shock, 2009, 28(12): 96-100