混凝土异形柱抗剪承载力可靠度分析及公式调整

发布时间：2018-05-15 16:20

本文选题：异形柱 + 抗剪承载力设计公式　；参考：《土木工程学报》2017年10期

【摘要】：为确定《混凝土异形柱结构技术规程》(JGJ 149—2006)中异形柱抗剪承载力计算公式对应的可靠度水平是否满足《建筑结构可靠度设计统一标准》(GB 50068—2001)的相关规定,利用概率论原理、经验校准法及弯矩分配法、反弯点法推导了异形柱抗剪承载力的均值、变异系数及其与荷载的相关系数的计算公式。懫用可考虑随机变量相关影响的改进的JC法,分析了三种荷载组合情况下异形柱抗剪承载力可靠度水准,指出了不满足《建筑结构可靠度设计统一标准》中可靠度水准要求的工况。以此为基础,采用双系数调整方法建立了可满足《建筑结构可靠度设计统一标准》中可靠度水准要求的异形柱抗剪承载力设计公式,给出了双系数的高精度计算公式,可供修订《混凝土异形柱结构技术规程》参考。
[Abstract]:In order to determine whether the reliability level of the formula of shear bearing capacity of the special shaped column of the concrete column structure (JGJ 149 - 2006) corresponds to the relevant provisions of the unified standard for the design of structural reliability (GB 50068 - 2001), the probability theory, the empirical calibration method and the bending moment distribution method, and the reverse bending point method are used to deduce the special-shaped columns. With the improved JC method, which can consider the influence of random variables, the reliability level of shear bearing capacity of special-shaped columns under three load combinations is analyzed, and it is pointed out that the reliability level in the unified standard for the reliability design of the building structure is not satisfied. On the basis of this, a double coefficient adjustment method is used to establish a design formula for the shear bearing capacity of a special-shaped column that meets the requirements of the unified standard for the reliability design of the building structure, and the high precision calculation formula of the double coefficient is given, which can be used for the revision of the technical specification for the structure of the concrete special-shaped column.

【作者单位】：四川大学;
【分类号】：TU37

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