The dynamic response and seismic damage of domes subjected to near-fault ground motions

Zhang, Ming, Parke, Gerard and Chang, Zhiwang (2018) The dynamic response and seismic damage of domes subjected to near-fault ground motions Earthquakes and Structures, An International Journal.

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Abstract

The dynamic response and seismic damage of single-layer reticulated shells in the near field of a rupturing fault can be different from those in the far field due to the different characteristics in the ground motions. To investigate the effect, the dynamic response and seismic damage of this spatial structures subjected to two different ground motions were numerically studied by nonlinear dynamic response analysis. Firstly, twelve seismic waves with an apparent velocity pulse, including horizontal and vertical seismic waves, were selected to represent the near-fault ground motion characteristics. In contrast, twelve seismic records recorded at the same site from other or same events where the epicenter was far away from the site were employed as the far-fault ground motions. Secondly, the parametric modeling process of Kiewitt single-layer reticulated domes using the finite-element package ANSYS was described carefully. Thirdly, a nonlinear time-history response analysis was carried out for typical domes subjected to different earthquakes, followed by analyzing the dynamic response and seismic damage of this spatial structures under two different ground motions based on the maximum nodal displacements and Park-Ang index as well as dissipated energy. The results showed that this spatial structures in the near field of a rupturing fault exhibit a larger dynamic response and seismic damage than those obtained from far-fault ground motions. In addition, the results also showed that the frequency overlap between structures and ground motions has a significant influence on the dynamic response of the single-layer reticulated shells, the duration of the ground motions has little effects.

Item Type:	Article
Divisions :	Faculty of Engineering and Physical Sciences > Civil and Environmental Engineering
Authors :	Name Email ORCID Zhang, Ming Parke, Gerard G.Parke@surrey.ac.uk Chang, Zhiwang
Date :	2018
Copyright Disclaimer :	Copyright © 2018 Techno-Press
Uncontrolled Keywords :	Single-layer reticulated shells; Near-fault ground motions; Far-fault ground motions; Nonlinear dynamic analysis; Frequencies; Duration
Related URLs :	Publisher
Depositing User :	Clive Harris
Date Deposited :	28 Mar 2018 09:26
Last Modified :	20 Jun 2018 09:03
URI:	http://epubs.surrey.ac.uk/id/eprint/846099

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