Analysis on the Depth of a Soft Soil Deep Foundation Pit Supporting Pile

Pile anchor or pile bracing structure is generally used in soft soil deep foundation pit supporting. The depth of supporting pile directly affects the stability of supporting structure and the cost of supporting engineering. Determining the depth of supporting pile is an important content of deep foundation pit support design in soft soil area. Combined with an example of foundation pit in a soft soil area, the relevant calculation and analysis of various depth of supporting piles are carried out according to the national foundation pit code and Shanghai foundation pit code, and considering the favorable influence of engineering pile on the depth of supporting pile to ensure a safe, reasonable and economical depth of supporting pile. According to the code of Shanghai foundation pit, the depth of supporting pile of soft soil deep foundation pit can be shortened obviously. Considering the favorable influence of the engineering pile in the pit, the depth of the supporting pile can be further optimized, which could provide reference for similar foundation pit supporting design.