梁柱接头反覆载重行为之研究-中国土木水利工程学会.PDF

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2019-02-04 发布于天津
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梁柱接头反覆载重行为之研究-中国土木水利工程学会.PDF

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梁柱接头反覆载重行为之研究-中国土木水利工程学会

beam-to-column welded joints. This research found that the water-cooled specimen fractured at the weld metal or the HAZ. The reason is that the weld metal strength was lower than the base metal strength after the beam-to-column welded cruciform joint specimen 900C with the temperature higher than A1 transformation 900C temperature (723C) was water-quenched. A 723C 1 Abstract In order to study the post-fire mechanical behav- iors and failure modes of the steel beam-to-column welded joints under cyclic loadings, this research fab- ricated three beam-to-column welded cruciform joint specimens. The three specimens experienced three different temperature treatments, which were room- temperature treating, air-cooling after reaching 900C and water-cooling after reaching 900C, respectively to simulate the possible material property variations of weld metal and base metal in the beam-to-column w