松-嫩平原苏打型盐渍土强度特性研究  

Research y on strength of Song-Nen Plain soda-saline soil

作　　者：于青春[1] 孙婉[1] 陈波[2] 杨立森[2] 张国辉[2] 

机构地区：[1]中国地质大学(北京)水资源与环境学院,北京100083 [2]吉林省公路重点工程建设管理办公室,吉林130021

出　　处：《岩土力学》2008年第7期1793-1796,1801,共5页Rock and Soil Mechanics

摘　　要：用干燥法和滴水法研究了松嫩平原苏打型盐渍土在失水和吸水过程中抗剪强度参数c、φ随含水率的变化关系,提出了这两种情况下,苏打型盐渍土随含水率变化的抗剪强度公式并给出其强度参数及含水率的强度曲面,得出了不同应力水平下的临界含水率。分析了苏打型盐渍土在失水和吸水条件下抗剪强度随含水率的变化机制。其研究结果为松嫩平原地区的苏打型盐渍土工程的设计与建设提供参考。The relationship between shear strength and water content of Song-Nen Plain soda-saline soil is studied with two different experimental methods. A shear strength formula is brought out based on tests; and the strength parameters are given accordingly. At the same time, the yield surface and the critical water content of Song-Nen Plain soda-saline soil are proposed; and the mechanism of strength variation is analyzed. The study is valuable to the engineering design and construction in Song-Nen plain soda-saline soil.

关 键 词：苏打型盐渍土 含水率 抗剪强度 强度曲面 临界含水率 

分 类 号：TU448[建筑科学—岩土工程]