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ELASTOPLASTIC BEARING CAPACITY ANALYSIS FOR CONCRETE-FILLED STEEL TUBE T-SHAPED COLUMNS
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摘要: 按幂规律强化的应力-应变关系建立T形钢管混凝土短柱单向小偏压的计算模型,推导了T形和矩形钢管混凝土短柱极限强度承载力的计算公式,并分析了翼缘高度对承载力的影响。最后,用数值算例验证了推导公式的正确性和有效性。Abstract: An approach to the ultimate load analysis of the concrete-filled steel tube T shaped columns is presented.Based on the calculation mode of stress-strain relation growing according to exponential rule for the composite materials,calculation formula of elastic-plastic bearing capacity is deduced,and the influence of sectional dimension is analyzed by the formula.Finally,a numerical example confirms the correctness and validity of the proposed computation formula.
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Key words:
- concrete-filled steel tube /
- elastoplasticity /
- bearing capacity /
- eccentricity
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韩林海, 杨有福. 矩形钢管混凝土轴心受压构件强度承载力试验研究. 土木工程学报, 2001, 34(4): 22-31 蒋 涛, 沈之容, 余志伟. 矩形钢管混凝土轴压短柱承载力计算.特种结构, 2002, 19(2): 4-6 杨有福, 韩林海. 矩形钢管混凝土构件抗弯力学性能试验研究. 地震工程与工程震动, 2001, 21(3): 41-48 陈保春. 钢管混凝土偏心受压承载力分析. 福州大学学报, 2002,30(6): 838-845 Bradford M A. Design Strength of Slender Concrete-Filled RectangularSteel Tubes. ACI Structural Journal, 1996, 93(2): 229-235 Han Linhai, Yao Guohuang. Influence of Concrete Compaction on theStrength of Concrete-Filled Steel RHS Columns. Journal of ConstructionalSteel Research Volume,2003, 59(3): 751-767 Han L H. Tests on Stub Columns of Concrete-Filled RHS Sections.Journal of Constructional Steel Research, 2002, 58(3): 353-372 -
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