| 方钢管高强混凝土短柱轴压试验研究 |
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| 引用本文： | 郎龚,杨志坚,蒋连接.方钢管高强混凝土短柱轴压试验研究[J].低温建筑技术,2011,33(11):42-45. |
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| 作者姓名： | 郎龚 杨志坚 蒋连接 |
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| 作者单位： | 1. 宿迁学院建筑工程系,江苏宿迁,223800
2. 天津大学建筑工程学院,天津,300072 |
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| 摘 要： | 本文对3根冷弯型方钢管高强混凝土短柱进行了轴心受压试验,并分析了冷弯型方钢管高强混凝土轴心受压短柱的受力性能及变形特点。提出了典型荷载-应变全过程曲线,并分析了各阶段的受力性能。得到如下结论:冷弯型方钢管高强混凝土短柱充分利用了高强混凝土抗压与钢材抗拉的材性特点,其极限承载力较普通方钢管混凝土更高;短柱试件承载力的下降取决于方钢管的局部屈曲与核心混凝土失去三向受力状态并被压碎的程度;冷弯型方钢管高强混凝土的极限承载力本质上主要由冷弯型方钢管局部屈曲控制;冷弯型方钢管高强混凝土轴压短柱后期延性较差,但含钢率越大,其后期残余承载力越大。
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| 关 键 词： | 冷弯方钢管 核心混凝土 高强 轴心受压 |
EXPERIMENTAL STUDY OF HIGH STRENGTH CFSST STUB COLUMNS UNDER AXIAL COMPRESSIVE LOAD |
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| LANG Yan,YANG Zhi-jian,JIANG Lian-jie.EXPERIMENTAL STUDY OF HIGH STRENGTH CFSST STUB COLUMNS UNDER AXIAL COMPRESSIVE LOAD[J].Low Temperature Architecture Technology,2011,33(11):42-45. |
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| Authors: | LANG Yan YANG Zhi-jian JIANG Lian-jie |
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| Affiliation: | LANG Yan1,YANG Zhi-jian2,JIANG Lian-jie1(1.Department of Building Engineering,Suqian College,Jiangsu Suqian 223800,China,2.School of Civil Engineering,Tianjin University,Tianjin 300072,China) |
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| Abstract: | Based on previous research on the mechanical behavior of concrete-filled square steel tube(CFSST),an experimental study of three high strength concrete-filled square cold-formed steel tubular stub columns was carried out,bearing capacity and deformation of the stub columns are analyzed in the paper.This paper discusses the typical axial load versus axial strain curve and mechanical characteristics during the test.Some conclusions are as follows:Ultimate bearing capacity of high strength concrete-filled squa... |
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| Keywords: | cold-formed square steel tube core concrete high strenth axial compressive load |
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