EXPERIMENTAL STUDY AND NUMERICAL ANALYSIS OF BOND-SLIP PERFORMANCE FOR CONCRETE FILLED STEEL TUBE
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摘要: 在对三组9根不同的长细比、不同径厚比和不同含钢率的钢管混凝土轴压短柱推出试验研究的基础上，建立了钢管混凝土轴压短柱的非线性有限元分析模型并进行了数值分析。研究了钢管应力、钢管与混凝土的粘结应力和相对滑移沿钢管长度方向的变化规律。数值分析结果与试验结果吻合较好。该文试验及数值分析结果为进一步建立钢管混凝土粘结滑移本构关系提供了参考依据。
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关键词:
- Push-out experiments were conducted to three groups of (totaling 9) concrete filled steel tube (CFST) columns under axial compression. These columns have different slenderness ratios /
- diameter-thickness ratios and steel contents. Then a nonlinear finite element model is presented and a corresponding numerical analysis is performed. The stress of steel tube /
- the bond stress between steel tube and concrete and the variation of relative slip along the length are discussed. The numerical results are in good agreement with the experimental results. This work provides a reference for further development of the bond-slip constitutive relationship for CFST.
Abstract: 钢管混凝土；粘结应力；相对滑移；试验研究；数值分析-
Keywords:
- concrete filled steel tube /
- bond stress /
- relative slip
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