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利用ABAQUS对歪闪斗栱模型进行竖向单调加载数值模拟,研究歪闪斗栱的竖向受力性能,及不同歪闪角度对斗栱的荷载-位移曲线、破坏形态和受力性能等的影响.研究结果表明:在竖向荷载作用下,歪闪斗栱的破坏形态与完好斗栱类似,为栌斗压溃破坏,且歪闪斗栱的破坏更加严重;荷载-位移曲线可用双折线模型表示;当歪闪角度为0.～6.时,斗栱的刚度及允许承载力随歪闪角度的增大而降低,最大降幅为30％左右.研究木结构古建筑歪闪斗栱的受力性能,对修缮、保护古代建筑具有深远意义.“,”By simulating the skewed Dou-Gong under the vertical monotonic loading based on ABAQUS program,the vertically mechanical behavior of skewed Dou-Gong,the effects on load-displacement curves are failure modes and mechanical performance of Dou-Gong under different skew angle were studied.The results show that the failure mode of skewed Dou-Gong belongs to the crushing collapse of Lu-dou,similar to intact ones under vertical load.Meanwhile,the skewed Dou-Gong is destroyed more seriously.The load-displacement curves can be described by the double broken line model.The stiffness and allowed bearing capacity decrease when skew angle ranged from 0° to 6° increases and the largest drop is about 30％.It is meaningful for repairing and protecting ancient buildings by researching the mechanical performance of the skewed Dou-Gong in ancient timber buildings.