Abstract:

The antiuplifting of underground structures in high groundwater level area is very important; as a result, Styped drainage mat set under basement slab of underground structure is proposed. The working mechanism of active antiuplifting technology for underground structures is numerically simulated and analyzed. The design principle and calculation method for active antiuplifting technology for underground structures is established and applied to foundation of Hechang Center in Xiamen. The study results show that the pore water pressure of soil under basement slab of the foundation of underground structure has been reduced; the construction cost has been reduced and the construction schedule has been shortened by adopting active antiuplifting technology. 

Key words: underground structures, active antiuplifting, hydrostatic uplifting pressure relief system, Styped drainage mat