K_0压密土的湿化试验规律及其描述  

EXPERIMENTAL RULES OF SLAKING FOR K_0 COMPRESSED CLAY AND ITS DESCRIPTION

作　　者：姚仰平[1] 祝恩阳[1] 

机构地区：[1]北京航空航天大学交通科学与工程学院,北京100083

出　　处：《工业建筑》2008年第4期50-53,62,共5页Industrial Construction

基　　金：国家自然科学基金资助项目(10672010);国家科技支撑项目(2006BAK12B12)

摘　　要：通过对取自奥林匹克森林公园的土进行的干燥状态和饱和状态下的K0压缩试验及湿化试验,得出以下结论:在e-lgp图中:1)正常压密干土在各荷载下湿化,其孔隙比均落在饱和泥浆压缩线上;2)同一前期固结压力下,不同超压密比的干土湿化后,其孔隙比也近似落在一条直线上。依据湿化试验的结果,对K0状态下天然土的湿化行为给出数学描述,并对试验数据进行预测,结果表明:预测结果与试验结果基本吻合。In this paper, from results of Ko compression tests and slaking tests on both dry clay and saturated clay in Olympic Park, some conclusions are obtained： in e-lgp paragraph, when the normal compressed dry clay is wetted under different stresses, the void ratios all reach compression line of saturated clay ; while different over compressed dry clay in the same pre-consolidation pressure is wetted, the void ratios also reach one line approximately. Concluding from the results of slaking tests, a mathematical description is worked out to describe wetting deformations under Ko compression. Using this mathematic description, a prediction for wetting deformations is given out and it agree well with the tests results.

关 键 词：湿化 干土 K.压缩 规律 描述 

分 类 号：TU41[建筑科学—岩土工程]