Geosynthetic Reinforcement of Sand-Mat Layer above Soft Ground

Materials

Jong-Beom Park²  Hyun-Soo Park¹ 

[1] New Millennium Construction Co., Ltd.; Gwangju 500-862, Korea; E-Mail:;Shinmyeong Construction Engineering Co., Ltd.; Suncheon 540-080, Korea; E-Mail:

关键词: sand-mat system;    geosynthetics reinforced;    bearing capacity;    soft ground;   

DOI  :  10.3390/ma6115314

来源: mdpi

【 摘 要 】

In order to improve the bearing capacity of soft ground for the purpose of getting trafficability of construction vehicles, the reinforcement of geosynthetics for sand-mat layers on soft ground has often been used. As the strength of the geosynthetics increases, and the sand-mat system becomes stronger, the bearing capacity of sand-mat systems will be increased. The depths of geosynthetics, reinforced in sand-mat layers, were varied with respect to the width of footing. The tensile strengths of geosynthetics were also varied to evaluate the effect of reinforcement on the bearing capacity of soft ground. The dispersion angles, with varying sand-mat thicknesses, were also determined in consideration of the tensile strength of geosynthetics and the depths of reinforcement installations. The bearing capacity ratios, with the variation of footing width and reinforced embedment depth, were determined for the geosynthetics-only, reinforced soft ground, 1-layer sand-mat system and 2-layer sand-mat system against the non-reinforced soft ground. From the test results of various models, a principle that better explains the concept of geosynthetic reinforcement has been found. On the basis of this principle, a new bearing capacity equation for practical use in the design of geosynthetically reinforced soft ground has been proposed by modifying Yamanouchi’s equation.

【 授权许可】

CC BY   
© 2013 by the authors; licensee MDPI, Basel, Switzerland.