| 型钢-钢管混凝土轴压柱核心混凝土应力-应变关系 |
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| 引用本文： | 肖阿林,何益斌,郭健.型钢-钢管混凝土轴压柱核心混凝土应力-应变关系[J].中南大学学报(自然科学版),2010,41(1). |
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| 作者姓名： | 肖阿林 何益斌 郭健 |
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| 作者单位： | 1. 湖南大学,土木工程学院,湖南,长沙,410082
2. 湖南大学,土木工程学院,湖南,长沙,410082;湖南大学,设计研究院,湖南,长沙,410082 |
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| 基金项目： | 湖南省科技计划项目，湖南省杰出青年基金资助项目 |
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| 摘 要： | 对型钢-钢管混凝土轴压柱核心混凝土的受力特征进行分析;借鉴典型的约束混凝土本构关系,提出核心混凝土等效单轴受压应力-应变关系模型,该模型考虑了型钢翼缘对核心混凝土约束效应的贡献。利用所建立的核心混凝土应力-应变关系模型,采用数值方法对型钢-钢管混凝土轴压组合柱的荷载-变形关系进行分析。研究结果表明:核心混凝土内部存在双重约束区域,其力学性能与钢管混凝土柱中的核心混凝土存在差异;数值计算结果与试验结果较吻合,表明所提出的核心混凝土应力-应变关系模型能较准确地描述型钢-钢管混凝土轴压柱的受力过程、变形特征和承载能力等基本力学性能。
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| 关 键 词： | 组合柱 核心混凝土 应力 应变 受力特征 数值分析 |
Stress-strain relation of core concrete of aixally-loaded steel tubular columns filled with steel-reinforced concrete |
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| XIAO A-lin,HE Yi-bin,GUO Jian.Stress-strain relation of core concrete of aixally-loaded steel tubular columns filled with steel-reinforced concrete[J].Journal of Central South University:Science and Technology,2010,41(1). |
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| Authors: | XIAO A-lin HE Yi-bin GUO Jian |
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| Institution: | XIAO A-lin1,HE Yi-bin1,GUO Jian1,2 (1. School of Civil Engineering,Hunan University,Changsha 410082,China,2. Institute of Design , Research for Architecture , Structure,China) |
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| Abstract: | The working mechanism and stress characters of core concrete of aixally-loaded steel tubular columns filled with steel-reinforced concrete were investigated. Based on the typical constitutive models of confined concrete, stress-strain relationship describing the equivalent single-axis compressive stress of the core concrete was put forward by considering the confining contribution of steel flanges. Moreover, full-range load-deformation relationship for the composite columns under axial load was calculated b... |
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| Keywords: | composite column core concrete stress strain mechanics characteristic numerical analysis |
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