土工合成材料应用研究

Applied Research of Geosynthetics

本项目选取了土工格栅、土工布和复合土工膜三种材料,采用室内研究的方法,分别进行了拉伸、顶破、刺破和握持等试验;并在不同土样(南京地区特殊土质)中进行了直剪摩擦试验和拉拔摩擦试验.考虑不同土工材料、不同温度,不同含水率三种影响因素,研究特殊土质下土工合成材料在不同状态下的物理力学性能.分析了温度、湿度以及生产工艺对土工合成材料的影响和土质、含水量对土工合成材料与土体界面的摩擦系数的影响.为土工合成材料在江苏地区推广和应用提供参考.

By using indoor research method, experiments of drawing, bursting, shattering and gripping were conducted in the materials of geogrids, geotextile and composite geo-membrane. Tests of direct shear friction and pull-draw friction were also carried out in different soil samples （the specific soil of Nanjing）. The factors of different geotextile materials, different temperatures and different moisture content were taken into account when investigating physical and mechanical properties of geo-synthetic materials of specific soils in different situations. Besides, analysis was made to examine the influences of temperature, moisture and production technology on geo-synthetic materials, and the influences of soil quality and water content on geo-synthetic materials and soil interface friction coefficients. The purpose of this research is to provide reference for the wide application of geo-synthetic materials in the areas of Jiangsu Province.