Application and analysis of the geotextile composite cushion in the ground improvement of the new dredger fill
CHEN Yun-tao1,2, WANG Gui-jun1, MENG Fan-qiang3, XU Yan3
1. Hebei University of Technology, Tianjin 300401, China; 2. CCCC Tianjin Port Engineering Institute Co., Ltd., Key Laboratory of Port Geotechnical Engineering of the Ministry of Communication, Key Laboratory of Port Geotechnical Engineering of Tianjin, Tianjin 300222, China; 3. Tianjin Teda Ocean Development Co., Ltd., Tianjin 300480, China
Abstract：The vacuum preloading technology for reinforcing soft soil foundation often uses the coarse sand as the horizontal drainage channel. For laying geotextile composite cushion in the new dredger fill soft soil ground, key construction techniques such as horizontal drainage systems, artificial surface crust layer and light board equipment are achieved. By monitoring pore water pressure and surface subsidence, during improvement , the deformation law of foundation soil is grasped. The test data of bearing capacities of foundation and soil before and after improvement show that the water content, void ratio of reclaimed soil decrease obviously after improvement, and the bearing capacity of foundation is up to 80 kPa. The test data indicate that the geotextiles in composite cushion can effectively replace traditional coarse sand cushion. It may provide reference for soft ground improvement of subsequent large-area foundation.
陈运涛, 王贵君, 孟凡强, 许岩. 土工织物复合垫层法在新吹填软土地基加固中的应用与效果分析[J]. 岩土工程学报, 2016, 38(zk1): 169-172.
CHEN Yun-tao, WANG Gui-jun, MENG Fan-qiang, XU Yan. Application and analysis of the geotextile composite cushion in the ground improvement of the new dredger fill. Chinese J. Geot. Eng., 2016, 38(zk1): 169-172.
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