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以试验数据为依据,分别采用我国现行规范有效宽度法、规范拟修订稿有效宽度法和直接强度法计算了202个轴压构件、62个受弯构件、55个压弯构件的稳定承载力,通过试验值与计算结果的对比,综合研究了3种方法之间的差异性,对可靠度进行了定性分析。结果表明,拟修订的有效宽度法和直接强度法所得试验值与计算值之比的平均值更接近于1.0,且计算结果偏于安全,优于现行规范有效宽度法。从变异系数的结果可以看出修订有效宽度法和直接强度法的计算结果相差不大,并且它们的离散性都比现行规范有效宽度法小。
Based on the experimental data, the effective bearing capacity of 202 axial compression members, 62 flexural members and 55 compression-bent members were calculated respectively by the effective width method of our country, the effective width method of the proposed draft and the direct strength method. By comparing the experimental results with the calculated results, the differences between the three methods are comprehensively studied, and the reliability is analyzed qualitatively. The results show that the average value of the ratio between the experimental value and the calculated value obtained by the proposed effective width method and the direct strength method is closer to 1.0 and the calculation result is safer than the effective width method of the current standard. From the results of the coefficient of variation, it can be seen that there is not much difference between the modified effective width method and the direct strength method, and their discretization is smaller than the current effective width method.