作　　者： ; ; ;

机构地区： 湖南大学土木工程学院岩土工程研究所

出　　处： 《中南公路工程》 2003年第3期23-26,共4页

摘　　要： 探讨软弱土 (φ≠ 0 )地基加筋路堤稳定性分析方法。针对传统分析方法因对加筋材料的加筋作用估计不足 ,导致计算结果过于保守问题 ,文中在充分考虑加筋体的加筋作用下 ,提出了加筋路堤稳定性分析新的改进分析计算方法 ,并同时提出采用演化算法搜索临界滑动面和最小安全系数。算例计算结果表明 ,提出的加筋路堤稳定性分析方法与工程实际情况吻合较好 ,而且混合演化算法能有效地搜索到路堤所有的临界滑动面。 In the stability analysis of embankment constructed on soft soil (φ≠0) foundation and reinforced with geosynthetics, traditional methods, such as Sweden method and Holland's method, are unduly conservative due to limitations in understanding the reinforcing mechanism. Further study on the reinforcing mechanism shows that the effect of reinforcement of geosynthetic is significantly underestimated in the traditional methods. In this paper, a new method for stability analysis of embankment reinforced with geosynthetics is developed by improving the assumption of reinforcement effect. In addition, an evolutionary algorithm is suggested to search for the critical sliding surface of the embankment. Two examples are given for the purpose of examination with satisfactory results, which indicate that the new method is effective and feasible.

关 键 词： 软弱土地基 加筋路堤 稳定性 分析方法 演化算法 最危险滑动面

领　　域： [交通运输工程]