Abstract
In order to study the influence of earthquake duration on the dynamic response of pile-supported wharf in deep water area, this paper takes a typical steel pipe pile-supported wharf as the research object. This paper establishes the finite element model of pile-supported wharf. And by applying earthquake waves with different duration to the structure, the displacement response of the piled wharf, the energy dissipation ratio of plastic hinge, and the destruction process were analyzed. The study results show that the influence of earthquake duration on the displacement response of the structure is less but the influence on the parameters which are characterizing the earthquake energy dissipated by structure is significant, and the larger the amplitude of the earthquake waves is, the more significant the influence is. The parameters that characterize the earthquake energy dissipated by structure can provide a good indication of the damage level of the pile-supported wharf under earthquake with different durations. As a simple method, it can be preliminarily judged by the moment-curvature relation curve; when studying the influence of earthquake’s duration on the structure, an appropriate duration threshold should be chosen based on the type of structure.
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