基于ABAQUS的圆形开孔梁弯-剪承载力简化计算

Simplified calculation of bending and shearing capacity of the beam with circular web opening based on ABAQUS

利用有限元分析软件ABAQUS对35个试件展开了分析,以统一开孔梁的破坏标准。结果表明:开孔梁仅受到弯矩作用时,计算得到的抗弯强度值与理论值吻合度较高;纯剪状态时,按照统一标准从计算结果中提取的抗剪承载力值与理论值相差较大。本文最后也给出了梁剪切强度的简化计算公式。

35 specimens were simulated by the finite analysis software ABAQUS,and the failure criterion was unified so that reasonable limit force could be extracted.The results show that the flexural strength calculated by the finite element is in good agreement with the theoretical value when the beam only bearing bending moment.The shear strength extracted from the finite element calculation results is very different from the theoretical value.A simplified formula for the shear strength of the opening beams is also given at last.