Geosynthetic Materials Applied To The Foundation Treatment

The application of geosynthetics starts later in our country, but it developsvery fast. In1990s, especially our country suffered from severe floods in1998,under the attention of the leaderships and the relevant departments, geosyntheticmaterials have a great change in production, application, research and other aspects.The engineering application scope expands unceasingly, testing technology,construction level, theory research, technical innovation, and other aspects are todevelop significant. Geosynthetic materials has some characteristics about theresistance performance of acid, alkali, salt, and its soft properties can keepbuildings or foundation maintaining normal function under large deformation.Made of synthetic material sources is rich,and the weight of synthetic materials islight, the volume small, construction and installation easy. So, the use of syntheticmaterials not only save transportation and construction costs, reduce cost, shortenthe construction period, but also can ensure the quality of engineering. Now, it iswidely applied in Water Conservancy project, Hydropower project, Highwayengineering, Railway engineering, Building, Harbour engineering, Mining, Militaryand other projects.The types of geosynthetic materials, characteristics and application wereintroduced firstly. Then retaining wall classification and their using conditions wereintroduced. The reinforced mechanisms of geogrids are analyzed: the friction theoryand the pseudo cohesion concept theory. And the design methods of the geogridsreinforced earth retaining explained.Combined with the engineering practice, the points of construction wasdescribed Briefly about soft foundation treatment of geogrid. Contrasting twosituations of laided geogrid or not, was researched embankment settlement. Fromthe realities, soft soil subgrade treatment integrity is greatly increased,and theuneven settlement was controled.