论文部分内容阅读
基于弹性理论,提出了统一的公式来评价圆截面钢管混凝土(CCFST)柱的综合抗压强度。通过轴压下弹性复合柱结构的分析求解推导出公式,并用经过试验验证的一系列相关系数对该公式进行修正。基于佩里.罗伯逊公式,推导出轴压下的CCFST长柱的稳定性因子。将新的稳定承载力公式应用于空心和实心CCFST柱,得到了试验结果的验证。新公式的一个重要特点是它对空心和实心CCFST柱进行了统一,该公式与CCFST柱抗压强度或稳定承载力及一系列设计参数有关。
Based on the elasticity theory, a unified formula is proposed to evaluate the comprehensive compressive strength of circular concrete filled steel tubular (CCFST) columns. The formulas are deduced by analyzing and solving the structure of the elastic composite columns under axial compression and the formula is corrected by a series of correlation coefficients verified by experiments. Based on the Perry Robertson formula, the stability factor of a CCFST long column under axial compression is derived. The new stable bearing capacity formula was applied to hollow and solid CCFST columns, and the test results were verified. An important characteristic of the new formula is that it unifies the hollow and solid CCFST columns, which is related to the compressive strength or stability capacity of CCFST columns and a series of design parameters.