水利与建筑工程学报
水利與建築工程學報
수리여건축공정학보
TECHNIQUE OF SEEPAGE CONTROL
2012年
6期
147-150
,共4页
非饱和土%基质吸力%土-水特征曲线%竖向压力
非飽和土%基質吸力%土-水特徵麯線%豎嚮壓力
비포화토%기질흡력%토-수특정곡선%수향압력
unsaturated soil%metric suction%soil-water characteristic curve%compaction stress
总结有关土-水特征曲线的研究成果,利用非饱和土固结仪进行非饱和重塑粘土试样的土-水特征曲线试验,分析了竖向压力和固结压力对土-水特征曲线的影响,并利用Fredlund 3参数模型对试验数据进行拟合。研究结果表明,竖向压力越高,土-水特征曲线越平缓,空气进入值越大,同吸力下的土体饱和度越大。固结压力的影响与竖向压力相似。
總結有關土-水特徵麯線的研究成果,利用非飽和土固結儀進行非飽和重塑粘土試樣的土-水特徵麯線試驗,分析瞭豎嚮壓力和固結壓力對土-水特徵麯線的影響,併利用Fredlund 3參數模型對試驗數據進行擬閤。研究結果錶明,豎嚮壓力越高,土-水特徵麯線越平緩,空氣進入值越大,同吸力下的土體飽和度越大。固結壓力的影響與豎嚮壓力相似。
총결유관토-수특정곡선적연구성과,이용비포화토고결의진행비포화중소점토시양적토-수특정곡선시험,분석료수향압력화고결압력대토-수특정곡선적영향,병이용Fredlund 3삼수모형대시험수거진행의합。연구결과표명,수향압력월고,토-수특정곡선월평완,공기진입치월대,동흡력하적토체포화도월대。고결압력적영향여수향압력상사。
The soil-water characteristic curve is an important concept of unsaturated soil mechanics.Based on the published data,the influence of compaction stress and consolidation pressure on soil-water characteristic curve is studied,the soil-water characteristic curve tests for remolded unsaturated clay specimens are carried out by means of the unsaturated consolidation apparatus,and the test data are fitted by using the Fredlund tri-parameter model.The study results show that the higher the compaction stress,the flatter is the soil-water characteristic curve,and the higher is the air entry value.Simultaneously,the effect of consolidation pressure is similar to that of compaction stress.
