RELATION BETWEEN SOIL-WATER CHARACTERISTIC CURVE AND SOIL COMPACTION CURVE
作者单位：Graduate StudentGraduate School of Science and Engineering.Kagoshima University1-21-40 Korimoto Kagoshima890-0065 Japan ProfessorDept.of Ocean Civil EngineeringKagoshima University1-21-40 Korimoto Kagoshima890-0065 Japan
会议名称：《中日岩土工程学术会议》
会议日期：2005年
学科分类：08[工学] 080104[工学-工程力学] 0815[工学-水利工程] 0801[工学-力学（可授工学、理学学位）]
关 键 词：Soil-Water Characteristic Curve (SWCC) Compaction Curve Grain Size Distribution
摘 要：正 The soil-water characteristic curve （SWCC） is one of the most important relations for the mechanical properties of unsaturated soil. Some laboratory tests are developed to obtain the SWCC, but these test methods are not easy to be carried out. In this paper we theoretically derive the relation between the SWCC and soil compaction curve by introducing the concept of effective degree of saturation and applying the numerical model for voids （Kitamura model）. Then the soil compaction test on Toyoura sand and Shirasu are carried out to obtain the input parameters which are needed for the numerical experiment to calculate the SWCC. The SWCCs obtained from the numerical experiment are compared with those obtained from the water retention test on Toyoura sand and Shirasu. It is found that the numerical results are good agreement with the SWCC obtained from the water retention test. It is useful that the SWCC can be obtained not from the water retention test which is not popular and not easy to be carried out, but from the numerical experiment where the input parameters are obtained from the soil compaction test, grain size distribution test, soil particle density test and bulk density test which are popular and easy to be carried out.