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采用了LS-DYNA显式算法对15片砖砌体墙进行了数值模拟。首先对已有试验结果的9片带圈梁和构造柱的砖砌体墙进行了数值模拟,并将模拟结果与试验结果进行对比,验证了有限元分析参数选取的合理性。然后在此基础上增设了6片砖砌体墙,研究了墙体开洞率及构造柱对砖砌体墙承载力和抗倒塌能力的影响。结果表明,墙体开洞降低了砖砌体墙的整体承载能力和抗倒塌能力,且降低幅度随墙体开洞率的增大而增大;构造柱对提高砖砌体墙的承载能力和抗倒塌能力作用显著。
Fifteen brick masonry walls were numerically simulated using LS-DYNA explicit algorithm. Firstly, the numerical results of nine existing brick-framed walls with ring beam and structural column were compared. The simulation results and experimental results were compared to verify the rationality of the finite element analysis. Then six additional brick masonry walls were added to study the influence of the wall opening rate and the structural column on the bearing capacity and collapse resistance of the brick masonry wall. The results show that the opening of the wall reduces the overall carrying capacity and anti-collapse ability of the brick masonry wall, and the decreasing extent increases with the increase of the wall opening rate. The structural column can greatly improve the bearing capacity of the brick masonry wall, Anti-collapse ability has a significant effect.