CAJ | 학술논문

饱和黄土三轴试验中，土样饱和及固结过程是否完成对试验结果至关重要。土工试验饱和方法中，通常所使用的抽气饱和是提高土样饱和度的有效方法，但对于重塑马兰黄土样，抽气饱和中试样浸水后会发生结构溃散。因此，土样只能在三轴仪上进行饱和。本研究基于GDS非饱和三轴仪对兰州地区的马兰黄土重塑样进行多次饱和试验与固结试验，提出在GDS三轴仪外压力室外部设置三通接头，将试样顶部和底部接通汇集为同一路径，将饱和路径与排水路径均缩短为原来的一半，可明显缩短试验饱和时间与固结时间，进而实现在土样达到预定饱和度情况下缩短试验总时间的目标。而且，本试验中土样上、下同时进水或排水，也符合土体在自然界真实赋存状态下的饱和与固结过程。经反复验证，该方法在粉质黏土重塑样的三轴试验中使用效果较好。
포화황토삼축시험중，토양포화급고결과정시부완성대시험결과지관중요。토공시험포화방법중，통상소사용적추기포화시제고토양포화도적유효방법，단대우중소마란황토양，추기포화중시양침수후회발생결구궤산。인차，토양지능재삼축의상진행포화。본연구기우GDS비포화삼축의대란주지구적마란황토중소양진행다차포화시험여고결시험，제출재GDS삼축의외압력실외부설치삼통접두，장시양정부화저부접통회집위동일로경，장포화로경여배수로경균축단위원래적일반，가명현축단시험포화시간여고결시간，진이실현재토양체도예정포화도정황하축단시험총시간적목표。이차，본시험중토양상、하동시진수혹배수，야부합토체재자연계진실부존상태하적포화여고결과정。경반복험증，해방법재분질점토중소양적삼축시험중사용효과교호。
The saturation and consolidation status of soil samples is very important in the triaxial test of saturated loess.The vacuum saturation is a common effective way to saturate samples in the test.It is very difficult to saturate the remoulded loess samples by vacuum saturation which may destroy the structure of remoulded loess.So the remoulded loess samples have to be saturated on the triaxial apparatus.A number of saturation tests and consolidation tests are carried on the unsaturated triaxial apparatus of GDS for remoulded loess at Lanzhou.A tee-joint is installed on the triaxial apparetus to cut down the time of saturation test and consolidation test.Also it is a better way to simulate the soils in natural state through up and down to saturate and consolidate.This work contributes to the saturation and consolidation of silty clay in the triaxial test.