摘要
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.
Researching constitutive relation of raw-soil materials is not noly an important method to analyze its seismic performance and collapse mechanism, but also the premise of numerical simulation. The optimum additives（coarse and straw） was confirmed by strength test. Three groups of samples, namely the raw-soil cubics, coarse-cubits and straw-cubits, were tested by uniaxial compression, then, the stress——strain curves was fitted by the rational function and the constitutive equation given by Code for design of concrete structures. Uniaxial constitutive equations of the modified raw-soil materials was proposed.
出处
《新疆大学学报（自然科学版）》
CAS
2010年第1期123-126,共4页
Journal of Xinjiang University(Natural Science Edition)
基金
国家自然科学基金项目(项目编号:50768010)
新疆维吾尔自治区教育厅重点科研项目(项目编号:060115)
关键词
生土材料
本构方程
曲线拟合
modified raw-soil materials
constitutive equation
curve fitting
