湖南工业大学学报Issue(4)：15-19,5.DOI:10.3969/j.issn.1673-9833.2015.04.004
土工格栅加筋垫层工作特性分析
The Working Characteristic Analysis of Geogrid Reinforced Cushion
摘要
Abstract
By means of model test and 3D numerical simulation, discusses the working behaviors of gravel cushion and reinforced gravel cushion in the soft soil foundation respectively, and analyzes effects of the parameters of cushion thickness, geogrids and geogrid layers on the deformation modulus, vertical stress field and settlement deformation of gravel cushion and reinforced gravel cushion. The research results indicate that: 1)The stress diffusion effect of the reinforced gravel cushion of geogrids is obviously stronger than that of pure gravel cushion; 2)The internal stress of the cushion develops from bottom to top. When applying a small load, the cushion bottom appears stress concentration phenomenon, with the increase of load, the stress concentration area moves closly to the top of cushion; 3)With the increase of geogrid layers, the stress-concentration range and the settlement of reinforced gravel cushion reduced.关键词
数值模拟/碎石垫层/土工格栅/软土地基/承载力Key words
numerical simulation/gravel bed cushion/geogrids/soft soil foundation/bearing capacity分类
建筑与水利引用本文复制引用
王亚涛,何杰,汤磊华,王忍,高建喜..土工格栅加筋垫层工作特性分析[J].湖南工业大学学报,2015,(4):15-19,5.基金项目
国家自然科学基金资助项目（51108176），湖南省研究生科研创新基金资助项目 （）
