水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2014年
3期
121-124
,共4页
孙勇%张远芳%周冬梅%王月%蔡函珂
孫勇%張遠芳%週鼕梅%王月%蔡函珂
손용%장원방%주동매%왕월%채함가
天然盐渍土%冻融循环%内摩擦角%黏聚力%干密度
天然鹽漬土%凍融循環%內摩抆角%黏聚力%榦密度
천연염지토%동융순배%내마찰각%점취력%간밀도
natural saline-soil%freeze-thaw cycles%internal friction angle%cohesion%dry density
取罗布泊镇某建筑一定深度天然盐渍土进行室内常规试验，控制天然盐渍土在一定密度和一定含水率状态下进行多次冻融循环，找寻多次冻融循环条件下天然盐渍土强度变化规律。试验结果表明：无论采用击样法还是击实法制备的土样在经历多次冻融循环后，其黏聚力呈现先增大后降低的趋势，而内摩擦角呈现不断增大的趋势；随着冻融循环次数的增加天然盐渍土的干密度不断减小，孔隙比不断增大。
取囉佈泊鎮某建築一定深度天然鹽漬土進行室內常規試驗，控製天然鹽漬土在一定密度和一定含水率狀態下進行多次凍融循環，找尋多次凍融循環條件下天然鹽漬土彊度變化規律。試驗結果錶明：無論採用擊樣法還是擊實法製備的土樣在經歷多次凍融循環後，其黏聚力呈現先增大後降低的趨勢，而內摩抆角呈現不斷增大的趨勢；隨著凍融循環次數的增加天然鹽漬土的榦密度不斷減小，孔隙比不斷增大。
취라포박진모건축일정심도천연염지토진행실내상규시험，공제천연염지토재일정밀도화일정함수솔상태하진행다차동융순배，조심다차동융순배조건하천연염지토강도변화규률。시험결과표명：무론채용격양법환시격실법제비적토양재경력다차동융순배후，기점취력정현선증대후강저적추세，이내마찰각정현불단증대적추세；수착동융순배차수적증가천연염지토적간밀도불단감소，공극비불단증대。
A certain depth of the natural soline-soil in a building of Lop Nur was applied for the indoor routine tests ,and the variation laws of the natural soline-soil under repeated freeze-thaw cycles with a certain density and water content were found and studied .The test results suggest that after the repeated freeze-thaw cycles of the soil specimen ,its cohesion in-creases first and then decreases ,and its internal friction angle shows the continuously increasing trend ;With the increase of freeze-thaw cycles ,the dry density of the natural saline-soil deereases continuously ,and its void ration increases .
