路基拓宽地基处理技术的合理性分析

Reasonableness Analysis on Ground Treatment Method of Broaden Embankment

拓宽路基的工后不均匀沉降是导致高速公路改扩建工程相关病害的主要原因之一,选择合理的地基处理方案可以有效的减小拓宽路基工后差异沉降的产生。以广三高速公路拓宽工程为例,选取3组软土埋深不同的典型断面,采用有限元法对不同的软基处理方式进行了分析,并对各典型断面的软基处理方案进行了优化。研究结果表明,该方法能够较好地反映不同地基处理方案的效果。另外,对不同的地质情况,不同的地基处理方案效果差异明显,在路基拓宽的地基处理设计方案中应进行详细比选。

The settlement of the soft soil under embankment load after highway reconstruction is one of the main reasons that lead to related diseases of highway extension project. It can reduce differential post - construction settlement between the old and the widening subgrad grams. In this paper, Guangsan expressway extension e effectively to choose a reasonable ground treatment pro- project to be taken a example, the effects of several kinds of soft foundation treatment methods were discussed using finite element methodfor 3 different soft soil burial depthes. The results show that there are significant differences in treatment effect in different geological conditions and the methods used in this paper reflect the treatment effects better.