Abstract: The soil-cement mixed wall inserted with medium sized hot rolled steel beams has received more and more applications as the deep excavation supporting structures. Since the rare pile will resist the uplift load, the reinforced soil cement mixed wall has not been widely used as the supporting structure without horizontal bracing. This paper presents the application of double row piles with soil cement mixed wall without ground anchor or other horizontal supporting structure for a deep excavation project in Shunde District of Foshan City. The thick silt and fine sand soils are predominant at the project site. Both design principles and construction methods are introduced in the paper. The twodimensional finite element software PLAXIS was used to analysis the typical supporting section. The construction monitored data were also compared with the numerical analysis results. It is concluded that the double row piles with soil cement mixed soil wall could be used as a supporting structure in the deep excavation in thick silt and fine sand layer.

Key words: Double-Row Piles, Soil Cement Mixed Wall, Deep Excavation, Silt and Fine Sand Strata, Design and Construction