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- W3010569291 abstract "In this paper, three non-destructive tests were conducted on a post-fire steel bridge, X-ray fluorescence spectrometry, the ultrasonic wave method, and metallographic replication testing. The possible temperature of the bridge steel structure was below 420 °C during the fire; the steel was free of defects such as cracks; and there was no significant change in the composition and ratio of the metallographic microstructure of the steel. After four kinds of destructive tests, atomic emission vacuum spectrometric analysis, tensile test, impact test, and hardness test, it was confirmed that the steel bridge material was ASTM A572 GR.50 Type 1. After the fire, the yield strength of the steel was 348 N/mm2; the ultimate strength was 525 N/mm2; the elongation was 26.3%; toughness energy was 157 J, and the hardness of the front side was between 144 and 168 (HB) and between 78 and 86 (HRB); the back side was between 152 and 156 (HB), and between 81 and 82 (HRB). The mechanical properties of the specimen are superior to the specifications of ASTM A572. Research results of this study are effective in helping to devise structural safety assessment techniques." @default.
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- W3010569291 date "2020-06-01" @default.
- W3010569291 modified "2023-10-16" @default.
- W3010569291 title "Study of the structural safety assessment of steel bridge subjected in post-fire" @default.
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- W3010569291 doi "https://doi.org/10.1016/j.conbuildmat.2020.118587" @default.
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