CAJ | 학술논문

为研究关中Q2黄土在不同压应力和含水率下的变形规律，以关中Q2黄土为研究对象，建立了黄土流变模型，对不同压应力和含水量下关中Q2黄土进行宏观流变试验，利用数值分析和力学分析方法对关中Q2黄土在不同压应力和含水率下的流变特性试验数据进行了系统分析，得到了不同压缩荷载和含水率下Q2黄土的流变曲线，给出了考虑含水率和应力影响的分时叠加流变曲线数学模型。试验结果表明：Q2黄土湿陷流变呈两阶段变形，第一段呈现为减速变形，流变曲线呈对数变化，第二段呈现为稳定流变，流变曲线呈线性变化；加载应力与含水率对流变的影响呈正相关，曲线变形趋势一致。
위연구관중Q2황토재불동압응력화함수솔하적변형규률，이관중Q2황토위연구대상，건립료황토류변모형，대불동압응력화함수량하관중Q2황토진행굉관류변시험，이용수치분석화역학분석방법대관중Q2황토재불동압응력화함수솔하적류변특성시험수거진행료계통분석，득도료불동압축하재화함수솔하Q2황토적류변곡선，급출료고필함수솔화응력영향적분시첩가류변곡선수학모형。시험결과표명：Q2황토습함류변정량계단변형，제일단정현위감속변형，류변곡선정대수변화，제이단정현위은정류변，류변곡선정선성변화；가재응력여함수솔대류변적영향정정상관，곡선변형추세일치。
In order to study the deformation of loess under different stress and moisture content ,the Q2 loess of Guan zhong is taken as the research material .T riaxial creep experiment under different pressure stress and water content is carried .A systematic research is conducted on Q2 loess ,through numerical analysis and mechanics analysis ,to discover the law of the creep property due to the change in the pressure stress and water content .Considering the impact of moisture and stress ,rheological curves superimposed sharing mathematical model is proposed .T he rheological curve of Q2 loess w hich under different compression load and water content is obtained through triaxial rheological test .the results show :T he Q2 loess rheological deformation composes tw o phases .T he first phase is deceleration deformation stage in which rheological curve changes logarithmically .In the second phase ,change is stable ,and rheological curve show s linearly .T he impact of loading stress and moisture content on the rheological deformation is positive correlation .The trend of the deformation curve is similar .