砌体受压承载力计算

Evaluation of Load Carrying Capacity of Masonry under Compressive Loading

在已有砌体受压承载力试验数据的基础上,提出考虑砌体偏心受压特点的应力-应变关系,利用平截面假定和平衡关系,并考虑砌体的局部受压,采用附加偏心距考虑纵向弯曲影响,建立了受压承载力计算公式,该式能与偏心影响系数和纵向弯曲系数相协调,具有计算简单、概念清楚、适用范围广等优点,且计算结果与试验结果吻合较好,对砌体局部受压承载力计算也有参考价值.

There are many formulas about the evaluation of loading capacity of masonry under compressive loading,but these formulas can not be used in the capacity calculation of masonry under local compression. Based on the experimental results, the expression of stress-strain curve of masonry under eccentric compression is put forward. By using the assumption of plain section and equilibrium of forces, the formula of load carrying capacity of masonry under compression is deduced. The formula,taking account of the influences of eccentricity and longitudinal flexure has many merits such as clear concept, simple calculation and wide application.The results of calculation have a good agreement with the experiments'. It has also been of value to the evaluation of loading capacity of masonry under local compression.