A Novel Three-Dimensional Composite Isolation Bearing and Its Application to the Mitigation of Earthquakes and Traffic-Induced Vibrations

Qiaoyun Wu, Hang Xu, Zhifeng Xu () and Xuyong Chen ()
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Qiaoyun Wu: Key Laboratory of Earthquake Engineering and Engineering Vibration, Institute of Engineering Mechanics, China Earthquake Administration, Harbin 150080, China
Hang Xu: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
Zhifeng Xu: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China
Xuyong Chen: School of Civil Engineering and Architecture, Wuhan Institute of Technology, Wuhan 430073, China

Sustainability, 2023, vol. 15, issue 23, 1-15

Abstract: Potential damage caused by earthquakes combined with reduced comfort due to traffic has become a big challenge when designing modern buildings, and base-isolation is one of the most effective solutions to such a problem. However, most isolation bearings cannot provide sufficient mitigation for both earthquakes and traffic-induced vibrations simultaneously. To this end, this research proposes a new type of three-dimensional isolation bearing for the mitigation of both earthquake effects and traffic-induced vibrations, which is composited by a thick rubber bearing, an auto-reset flat sliding bearing, and a double concave friction pendulum bearing. In this study, the analytical hysteresis model of the proposed isolation bearing was derived and experimentally validated. In addition, the fatigue performance and vertical compression performance of the proposed isolation bearing was tested and analyzed. Finally, the mitigation effect for traffic-induced vibrations of the proposed isolation bearing was validated through a field test.

Keywords: vibration isolation; composite bearing; three-dimensional vibration; sustainable seismic; comfort (search for similar items in EconPapers)
JEL-codes: O13 Q Q0 Q2 Q3 Q5 Q56 (search for similar items in EconPapers)
Date: 2023
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