砌体及砌体材料弹性模量取值的研究

Analyses of the Elastic Modulus Values of Masonry

从3种不同途径研究砌体弹性模量取值,即:按试验结果进行统计,得到砼砌块砌体以及砖、砌块和砂浆的弹性模量表达式;由砌体受压本构关系推导得到砖砌体、砼砌块砌体弹性模量表达式;由砖、砌块、砂浆弹性模量表达式建立砖砌体、砼砌块砌体弹性模量表达式.由此3种弹性模性的表达式其计算结果与试验结果、我国现行规范取值吻合较好,为研究砌体结构受力性能和破坏机理及进行有限元分析提供了基础资料.

The elastic modulus values of masonry were studied by using different methods. Firstly, the formulae of the elastic modulus of concrete block masonry, brick, block and mortar were derived on the basis of the statistic regression of testing results. Secondly, the formulae of brick and concrete block masonry were derived on the basis of the compressive stress-strain relation of masonry. Thirdly, the formulae of the elastic modulus of brick and concrete block masonry were also derived from the formulae of the elastic modulus of brick, block and mortar. The calculated results according to these three methods agreed better with the testing results and our current national codes. This has paved the way for the study of the behaviors of masonry structure and failure mechanism, and for the analysis of finite elements.