多孔砖砌体局部均匀受压强度分析

Strength analysis of perforated brick masonry under local uniform compression

在分析砌体局部均匀受压机理的基础上,对现行砌体结构设计规范(GB50003)关于多孔砖砌体局部均匀受压强度计算中存在的不足进行了讨论,考虑多孔砖截面特点,建议了局部均匀受压强度提高系数计算公式。结果表明,多孔砖砌体局部受压强度提高的主要原因是力的扩散作用,理论计算结果与试验结果吻合较好,且优于现行规范公式。

Based on the analysis of failure mechanism of brick masonry under local uniform compression,the shortcomings of the formula about the calculation of increased coefficient of the masonry strength in Chinese code（GB50003）are discussed.For the fired perforated brick masonry under local uniform compression,the reason of strength increase is mainly the influence of force diffusion.An evaluation formula,which can reflect the influence of force diffusion on the strength,is suggested.It shows that the results of evaluation have a good agreement with the experiments＇and are better than the code＇s.