2016 Volume 2 Issue 64 Pages 2192-2195
The soil nailing wall is a retaining structure widely used all over the world, while the composite soil nailing wall is a composite retaining structure developed on the basis of it, and it is so popular in China as to be used in thousands or more of foundation pit supporting projects each year. The composite soil nailing wall is made up of soil nailing wall and one or more type of the composite components such as ground anchor, cement-soil wall and mini pile, it could be applied to almost all kinds of soil, especially to soft soil layer. Like soil nailing wall, it gets many advantages such as rational construction, low cost, short construction period, convenient installation, simple mechanical equipment, etc. When ground anchor, cement-soil wall or mini pile works separately with soil nailing wall, it will form the three basic composite structures, and when two or three of them work together with soil nailing wall, the other four composite structures will be formed. The concepts, structural features, the overall stability check formulas of the seven structure types of the composite soil nailing wall, and a successful cases about foundation pit with the depth about 21 m are described in this paper.
