砌石圬工弹性模量的试验研究

根据试验并结合国内有关研究成果，建立了以测试水泥砂浆弹性模量，确定石砌体弹性模量的方法，给出了适合铁路结构工程应用的砌石圬工弹性模量和初始弹性模量的计算公式．

Experimental Study on Elastic Modulus of Stone Masonry

In order to setup a calculation method for the elastic modulus of stone masonry,experiments were carried out on stone building blocks and mortar specimens. Firstly, strain stress curves were obtained from 10 sheet stone building block and 10 block stone building block specimens.Combined with the domestic achievements in this field, calculation formulae for elastic modulus and initial elastic modulus of stone building block were constructed ,which agree with the experimental results quite well. Secondly, through analyzing elastic modulus from 24 cement mortar specimens of 4 groups, calculation formulae for elastic modulus of cement mortar were set up.There are good agreements between calculation and experimental results. On the basis of the above analysis, a new way and the corresponding formula to evaluate the elastic modulus of stone building block were established. Finally, applicable formulae for stone masonry in railway structural engineering were given.