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Z形截面柱的正截面承载能力和多种因素有关,其正截面的双向偏压性是一个主要影响因素,双向偏压条件下的承载能力通常需要借助数值分析程序来完成求解。为了揭示其受压性能并简化相应的求解过程,对指定截面Z形柱的弯曲性能进行了试验研究与有限元分析,验证了Z形柱正截面的变形规律基本符合平截面假定,对比了Z形柱与矩形柱在破坏形态上的异同点。在试验结果与有限元计算结果较吻合的情况下,通过应变分析,确定了Z形柱正截面抗弯能力最强的方向和最弱的方向,最后给出了中和轴位置与弯矩作用方向的随动关系。
The positive cross-section bearing capacity of Z-shaped cross-section columns is related to many factors. The bidirectional biasing of positive cross-section is a major factor. Bearing capacity under bi-directional bias usually needs to be solved by numerical analysis program. In order to reveal its compressive properties and simplify the corresponding solution process, the bending behavior of Z-shaped columns with specified cross-section was experimentally studied and analyzed by finite element analysis. The deformation of Z-shaped columns was verified to be in accordance with the flat section assumption. Comparing the Z Similarities and Differences between Destructive Morphology of Rectangular Column and Rectangular Column. In the case that the experimental results are in good agreement with the finite element calculation results, the strongest bending direction and the weakest direction of the positive cross-section of the Z-shaped column are determined through the strain analysis. Finally, the position and bending moment of the neutral shaft are given Follow the direction of the relationship.