cement soil piles;  oval support structure;  Bearing capacity guidelines;  Optimize selection

The oval supporting structure can become a supporting structure based on pressure through reasonable selection, and the cement-soil pile construction is simple, and it can play the role of water-stopping curtain after proper occlusion, so in the case of small excavation depth, the oval cement-soil support structure can be preferred. According to the practice of a cement-soil pile foundation pit support project, the optimal selection method of oval cement-soil support structure is studied and analyzed by taking the bearing capacity of cement-soil pile retaining wall structure as the control condition, which has certain engineering significance for the engineering application of oval supporting structure.