G50高速拓宽工程路基处理方案研究

Research on Roadbed Treatment Scheme for G50 High-speed Widening Project

以沪渝高速(G50)拓宽改建工程为实例,对现状路基和拓宽段路基处理方案进行了研究,拓宽段比选了堆载预压、复合地基、泡沫轻质土等三种方案,考虑减少新旧路基的差异沉降、降低处理成本等因素,推荐采用泡沫轻质土处理方案。

Taking the widening and reconstruction project of Shanghai Chongqing Expressway(G50)as an example,the current subgrade and the subgrade treatment scheme of the widening section are studied.Three schemes are selected for the widening section,including surcharge preloading,composite foundation and foamed cement.Considering the factors such as reducing the differential settlement of the new and old subgrade and reducing the treatment cost,the foamed cement treatment scheme is recommended.