CAJ | 학술논문

塑性单元体与黏性单元体并联之后再与弹性单元体串联即构成三要素模型，其各单元体都具有非线性本构关系。通过考虑增湿过程中饱和度对三要素模型中的黏性单元体和塑性单元体的影响，建立了弹-塑-黏性与湿陷性耦合的湿陷流变本构模型。湿陷对塑性单元体的影响表现为应变不变条件下屈服应力的降低；而对黏性单元体的影响表现为速率敏感系数的升高。两种影响可以通过试验确定。以此模型为基础，分析了高岭土的单轴压缩固结试验中的湿陷-流变变形，提出了一种湿陷-流变分析方法。试验中，在干燥条件下观测了蠕变；在增湿过程中观测了湿陷。试验中对含水量的测量精度高。理论所得含水率-应变-时间关系与实测结果接近，并区分了增湿过程中的湿陷和干燥条件下的蠕变，证明了本方法的有效性。
소성단원체여점성단원체병련지후재여탄성단원체천련즉구성삼요소모형，기각단원체도구유비선성본구관계。통과고필증습과정중포화도대삼요소모형중적점성단원체화소성단원체적영향，건립료탄-소-점성여습함성우합적습함류변본구모형。습함대소성단원체적영향표현위응변불변조건하굴복응력적강저；이대점성단원체적영향표현위속솔민감계수적승고。량충영향가이통과시험학정。이차모형위기출，분석료고령토적단축압축고결시험중적습함-류변변형，제출료일충습함-류변분석방법。시험중，재간조조건하관측료연변；재증습과정중관측료습함。시험중대함수량적측량정도고。이론소득함수솔-응변-시간관계여실측결과접근，병구분료증습과정중적습함화간조조건하적연변，증명료본방법적유효성。
Connecting the plastic component and the viscous component in parallel, then connecting these two components and the elastic component in series, yields the three component model, where each component has a unique nonlinear constitutive relation. Based on the three-component model, a elasto-plasto-viscosity model is proposed by considering the effects of wetting on the viscous component and the plastic component. The effects of wetting on the plastic component are described by a decrease in the inviscid yield stress at a fixed irreversible strain, while the effects on the viscous component are described by the increase of the rate-sensitivity coefficient. Both the effects on the two components can be fully determined based on test results. Subsequently, based on this collapse-rheology model, a numerical analysis is performed on the collapse-rheology behavior of Kaolin clay in a 1D consolidation test. In the test, the creep is observed in a dried condition, while the collapse is observed during the stepwise wetting. The water content and strain in the test are precisely measured. The validity of the analysis method is shown by the well simulated water content-strain-time relation and the definite difference between the collapse during wetting and the creep under dried condition.