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Investigating the mechanical properties of Galfan-coated steel cables at elevated temperatures is important for the fire-resistant design and fire-simulation analysis of pre-stressed structures. Unlike conventional structural types, Galfan-coated steel cables comprise several steel wires encircling a core wire in different layers. The overall mechanical property of a Galfan-coated steel cable is attributed to the individual properties and collaborative mechanism of Galfan-coated steel wires. The mechanical properties of a Galfan-coated steel cable at elevated temperatures are substantially different from those of conventional structural steel or the single steel wire. In this study, 42 Galfan-coated steel cables with 19, 37, and 61 wires were tested under steady state tension at ambient and elevated temperatures ranging from 100 to 600 degrees C. The test results show that the cables exhibit typical non-linear characteristics with a lower proportional limit and no clear yield plateau. The reduction factors in the mechanical properties of Galfan-coated steel cables at elevated temperatures are obtained and compared with values predicted in Eurocode 2 part 1-2 and ACl 216, and other studies. Equations for nominal yield strength, elastic modulus, ultimate strength, and ultimate strain for Galfan-coated steel cables at elevated temperatures are proposed in this study. Furthermore, a modified two-stage Ramberg-Osgood model for Galfan-coated steel cables at ambient and elevated temperatures is proposed. (C) 2019 Elsevier Ltd. All rights reserved.
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JOURNAL OF CONSTRUCTIONAL STEEL RESEARCH
ISSN: 0143-974X
Year: 2019
Volume: 155
Page: 331-341
4 . 1 0 0
JCR@2022
ESI Discipline: ENGINEERING;
ESI HC Threshold:136
JCR Journal Grade:1
Cited Count:
WoS CC Cited Count: 33
SCOPUS Cited Count: 33
ESI Highly Cited Papers on the List: 0 Unfold All
WanFang Cited Count:
Chinese Cited Count:
30 Days PV: 7
Affiliated Colleges: