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Advances in Materials Science and Engineering
Volume 2017, Article ID 3596094, 15 pages
https://doi.org/10.1155/2017/3596094
Research Article

Seismic Performance and Ice-Induced Vibration Control of Offshore Platform Structures Based on the ISO-PFD-SMA Brace System

1School of Civil Engineering, Qingdao University of Technology, Qingdao 266033, China
2Center for Infrastructure Engineering, Western Sydney University, Locked Bag 1797, Penrith South DC, NSW 2751, Australia

Correspondence should be addressed to Jigang Zhang; moc.621@gnahzgnagij

Received 14 July 2016; Revised 31 October 2016; Accepted 29 November 2016; Published 15 January 2017

Academic Editor: Ying Wang

Copyright © 2017 Jigang Zhang et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

Pall-typed frictional damper (PFD) has higher capacity of energy dissipation, whereas shape memory alloy (SMA) has excellent superelastic performance. Therefore, combining PFD and SMA together as a brace system has a great prospect in vibration control of structures. This paper investigates the performance of offshore platform with three structural configurations including the SMA brace system, the ISO-SMA (where ISO stands for isolation) brace system, and the ISO-PFD-SMA brace system, which are subjected to seismic and ice-induced excitations. In this study, PFD-SMA brace system is installed on the isolation layer of jacket platform, which is under earthquake excitations and ice loading. Then, the reduction of vibration is evaluated by using ANSYS program. The results show that the PFD-SMA brace system is useful in reducing the seismic response and ice-induced response of offshore platform structures; meanwhile, it also demonstrates excellent energy dissipation and hysteretic behavior.