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中文摘要：
把TS－526真三轴仪改造成平面应变仪，考虑临空面效应，对陕西杨凌非饱和重塑黄土在单侧刚性约束和双侧无约束两种情况进行了不同含水率、固结压力、干密度条件下的平面应变试验，分析以上因素对土体变形和强度特性的影响。结果表明：随着含水率的升高，干密度减小，固结压力降低，土体强度降低；单侧刚性约束条件下，土体的体变一直处于剪缩状态，而双侧无约束土体的体变先剪缩后剪胀；侧限约束条件对侧向变形影响很明显，同条件下单侧刚性约束土体强度较双侧无约束土体强度高；随着固结轴压的增大，侧限条件对土体强度影响逐渐减弱。
英文摘要：
The paper had carried on research on the strength of unsaturated and remolded loess from Yangling of Shaanxi with improved TS-526 true triaxial apparatus under different water moisture,consolidation pressure and dry density including unilateral constraints and bilateral unconstrained test under plane strain conditions. The results show that with the water content increasing,the dry density and consolidation pressure are reduced and the soil strength is lower;the volume change of unilateral constraints keeps in the state of bilateral shear contrac-tion,however,the change of bilateral unconstrained turns from the state of shear contraction to shear militancy;confining constraints have less effect on the axial deformation than the influence to the lateral deformation.
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