CAJ | 학술논문

为探讨应力状态和应力路径对非饱和土广义土-水特征曲线的影响，以南水北调中线工程安阳段渠坡换填土为对象，应用非饱和土三轴仪，进行一系列控制偏应力和净平均应力为常数的三轴收缩试验、控制偏应力和基质吸力为常数的三轴各向等量加压试验和控制净平均应力和基质吸力为常数的三轴等p剪切试验。研究结果表明：基质吸力、净平均应力和偏应力对水量变化均有较大影响；提出改进的非饱和土广义土-水特征曲线的表达式，能综合反映应力状态和应力路径的影响，用该式计算的结果与试验数据更为吻合。
위탐토응력상태화응력로경대비포화토엄의토-수특정곡선적영향，이남수북조중선공정안양단거파환전토위대상，응용비포화토삼축의，진행일계렬공제편응력화정평균응력위상수적삼축수축시험、공제편응력화기질흡력위상수적삼축각향등량가압시험화공제정평균응력화기질흡력위상수적삼축등p전절시험。연구결과표명：기질흡력、정평균응력화편응력대수량변화균유교대영향；제출개진적비포화토엄의토-수특정곡선적표체식，능종합반영응력상태화응력로경적영향，용해식계산적결과여시험수거경위문합。
In order to analyze the influence of stress state and stress path on the generalized soil-water characteristic curve,namely generalized SWCC,using the triaxial apparatus for testing unsaturated soils,a series of triaxial shrinking tests with deviator stress and net mean stress being constant values,triaxial isotropic compression tests with deviator stress and matric suction being constant values and triaxial p-fixed consolidated drained shear tests with net mean stress and matric suction being constant values are carried out against the backfill soil of the canal slope at Aayang district of South-to-North water diversion project. The test results show that matric suction,net mean stress and deviatoric stress have significant effect on the discharge of water. The expression of improved generalized SWCC is proposed,which can take the effect of stress state and stress path on the discharge of water comprehensively into account,and the computed results using this expression are in good agreement with the test data.