| 中空夹层钢管混凝土轴压短柱火灾后剩余承载力的试验研究 |
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| 引用本文： | 余鑫,陶忠.中空夹层钢管混凝土轴压短柱火灾后剩余承载力的试验研究[J].工业建筑,2009,39(4). |
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| 作者姓名： | 余鑫 陶忠 |
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| 作者单位： | 福州大学土木工程学院,福州,350108 |
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| 基金项目： | 福建省高等学校新世纪优秀人才支持计划项目 |
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| 摘 要： | 对6个中空夹层钢管混凝土轴压短柱开展试验研究,试验的主要参数是截面形式(圆套圆、方套方和方套圆)以及受火与否。试验结果表明,受火后中空夹层钢管混凝土轴压短柱的承载力下降显著。在空心率相同的情况下,方套圆截面形式的试件其剩余承载力最高,而圆套圆截面形式的试件其延性最好。同时还可以发现,火灾后中空夹层钢管混凝土的轴压承载力下降幅度与传统的实心钢管混凝土接近。
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| 关 键 词： | 钢管混凝土 短柱 受火 中空夹层 火灾后剩余承载力 |
RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE |
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| Yu Xin,Tao Zhong.RESIDUAL STRENGTH OF CONCRETE-FILLED DOUBLE-SKIN STEEL TUBULAR STUB COLUMNS AFTER EXPOSURE TO FIRE[J].Industrial Construction,2009,39(4). |
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| Authors: | Yu Xin Tao Zhong |
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| Affiliation: | College of Civil Engineering;Fuzhou University;Fuzhou 350108;China |
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| Abstract: | Test results of six concrete-filled double-skin steel tubular(CFDST) stub columns are presented.Circular hollow sections(CHS) and square hollow sections(SHS) were used to fabricate the inner and outer skins of the composite columns.The main parameters explored in this test programme were the section type(CHS inner and CHS outer,SHS inner and SHS outer,and CHS inner and SHS outer) and whether or not exposure to fire.It was found that the strength of the CFDST columns decreased significantly after exposure to... |
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| Keywords: | concrete-filled steel tube stub column fire exposure double-skin post-fire residual strength |
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