Finite Element Analysis of Deep Foundation Pit Composite Support Structure for A Project in Nansha, Guangzhou

The deep foundation pit of a certain project in Nansha, Guangzhou adopts a new type of concrete core type rigid large diameter triple tube (mixing) rotary jet grouting pile+two layers of concrete internal support composite support structure system. In order to explore the interaction effects of reinforced concrete reinforced piles, large diameter triple tube (mixing) rotary jet grouting piles, and pressure top plates in the new structural system under different working conditions, a three-dimensional finite element analysis method was used to numerically simulate and analyze the stability of the support system (mainly including displacement and internal force), providing data support for ensuring construction safety and providing reference for the design and construction of deep foundation pits in the region.