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《Technology of Highway and Transport》 2017-01
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Analysis to Geogrid Arrangement Optimization in Reinforced Soil

XIONG Shangyang;  
This paper uses numeric simulation to study the optimized arrangement of geogrid in reinforced soil of soft clay foundation. The study focused on influence to maximum bearing capacity of reinforced soil by first layer geogrid buried depth,geogrid distance,geogrid layers and geogrid length. Obtain load-displacement curve by gradually increasing foundation surface load,so to determine ultimate bearing capacity of foundation according to turning point on curve. Results show: The foundation bearing capability,with the increasing of first layer geogrid buried depth,appears to be the trend of increasing and then reducing. The foundation bearing capability reaches peak value when the first layer geogrid buried depth is 0. 2B. When geogrid distance is less than 0. 25 B,the foundation bearing capability increases with the increasing of geogrid distance,when geogrid distance larger than 0. 25 B,the foundation bearing capability reduce sharply with the increasing of geogrid distance; The foundation bearing capability increases with the increasing of geogrid layer numbers,but when the layer number exceeds 4,the increment of foundation bearing capability lowers down obviously. When the geogrid length is less than 2. 0B,the foundation bearing force increases obviously with geogrid length increment,while when the geogrid length is over 2. 0B,the increment of foundation bearing capability with the geogrid length increment is relatively small.
【Fund】: 国家自然科学基金项目(51578091)
【CateGory Index】: TU470
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