滑移线理论在土工合成材料加固软基中的应用

Bearing capacity of geosyntheticreinforced soft ground solved by characteristic line method

针对目前设计所采用的圆弧滑动法难以反映土工合成材料作用的问题,提出一种基于极限平衡概念的滑移线数值解法。该方法从极限承载力的角度,对土工合成材料作用做出一些假定,而后用滑移线数值解法分析加筋前后地基极限承载力的变化。实例分析表明,筋材的作用可通过地基承载力的增加得以较好地反映。本方法满足静力平衡方程和屈服条件,属于极限分析理论的下限解。

In this paper, the characteristic line method is proposed for the design of geosyntheticreinforced soft ground. Some reasonable assumptions are made to discuss the bearing capacity of such reinforced soft ground. The calculation results indicate that the use of reinforcement would increase the bearing capacity of soft ground greatly. The characteristic line method meets the static equilibrium equations and yield conditions, which gives the lower limit of the solutions.