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生土材料的本构关系是分析生土建筑抗震性能及倒塌机理的重要手段之一,也是对生土建筑结构进行数值模拟的前提.通过强度试验确定粗砂及麦秸秆这两种改性材料的最优掺量后,对同尺寸的素土试块及掺和了粗砂和麦秸秆的生土材料试块进行了单轴压缩试验,得到应力-应变曲线后,用有理式和混凝土规范提出的单轴本构方程分别去拟合实验实测点.建立了改性生土材料单轴本构方程.
The constitutive relation of raw soil material is one of the important means to analyze the seismic performance and collapse mechanism of raw soil and it is also the prerequisite for the numerical simulation of the structure of raw soil.By the strength test, the two modified materials, coarse sand and wheat straw, After the uniaxial compressive tests were carried out on the same size of soil test blocks and raw soil materials with coarse sand and wheat straw, after the stress-strain curve was obtained, with rational and concrete specifications The proposed uniaxial constitutive equations are respectively fitted to the experimental measurement points, and the uniaxial constitutive equation of the modified raw earth material is established.