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本文从工程人员常用的简化方法入手，采用非线性分析程序分析了大量算例，建立了Ｌ形、Ｚ形截面承载力与腹板矩形承载力之间的关系，将复杂的异形截面承载力计算转化为简单的矩形截面承载力计算，提出了一种既能定性又能定量的实用计算方法。
In this paper, a simple method commonly used by engineers is introduced. A large number of examples are analyzed by nonlinear analysis program, and the relationship between the bearing capacity of L-shaped section and Z-shaped section and the bearing capacity of rectangular webs is established. Into a simple calculation of the bearing capacity of rectangular section, a practical and computational method that is both qualitative and quantitative is proposed.