Seismic Responses of Asymmetric Base-Isolated Structures under Near-Fault Ground Motion |
| |
Authors: | YE Kun LI Li FANG Qin-han |
| |
Institution: | School of Civil Engineering and Mechanics, Huazhong University of Science and Technology, Wuhan 430074, China;Hubei Key Laboratory of Control Structure, Huazhong University of Science and Technology, Wuhan 430074, China |
| |
Abstract: | An inter-story shear model of asymmetric base-isolated structures incorporating deformation of each isolation bearing was built, and a method to simultaneously simulate bi-directional near-fault and far-field ground motions was proposed. A comparative study on the dynamic responses of asymmetric base-isolated structures under near-fault and far-field ground motions were conducted to investigate the effects of eccentricity in the isolation system and in the superstructures, the ratio of the uncoupled torsional to lateral frequency of the superstructure and the pulse period of near-fault ground motions on the nonlinear seismic response of asymmetric base-isolated structures. Numerical results show that eccentricity in the isolation system makes asymmetric base-isolated structure more sensitive to near-fault ground motions, and the pulse period of near-fault ground motions plays an import role in governing the seismic responses of asymmetric base-isolated structures. |
| |
Keywords: | Asymmetric base-isolated structure Near-fault ground motion Far-field ground motion Nonlinear seismic response |
本文献已被 CNKI 维普 万方数据 等数据库收录! |