Base Pounding Model and Response Analysis of Base-Isolated Structures under Earthquake Excitation
AbstractIn order to study the base pounding effects of base-isolated structure under earthquake excitations, a base pounding theoretical model with a linear spring-gap element is proposed. A finite element analysis program is used in numerical simulation of seismic response of based-isolated structure when considering base pounding. The effects of the structure pounding against adjacent structures are studied, and the seismic response of a base-isolated structure with lead-rubber bearing and a base-isolated structure with friction pendulum isolation bearing are analyzed. The results indicate that: the model offers much flexibility to analyze base pounding effects. There is a most clearance unfavorable width between adjacent structures. The structural response increases with pounding. Significant amplification of the story shear-force, velocity, and acceleration were observed. Increasing the number of stories in a building leads to an initial increase in impact force, followed by a decrease in such force. As a result, it is necessary to consider base pounding in the seismic design of base-isolated structures. View Full-Text
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Liu, C.; Yang, W.; Yan, Z.; Lu, Z.; Luo, N. Base Pounding Model and Response Analysis of Base-Isolated Structures under Earthquake Excitation. Appl. Sci. 2017, 7, 1238.
Liu C, Yang W, Yan Z, Lu Z, Luo N. Base Pounding Model and Response Analysis of Base-Isolated Structures under Earthquake Excitation. Applied Sciences. 2017; 7(12):1238.Chicago/Turabian Style
Liu, Chengqing; Yang, Wei; Yan, Zhengxi; Lu, Zheng; Luo, Nan. 2017. "Base Pounding Model and Response Analysis of Base-Isolated Structures under Earthquake Excitation." Appl. Sci. 7, no. 12: 1238.
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