A bold constructive method for the retaining structures of the excavation of the underground parking Clinics, in Brazil

摘要

This work presents a heady constructive method used for the retaining structures of the Underground Parking Clinics. The project of the parking includes 315m long for 15,5m wide and 4 undergrounds which work was concluded in the end of 1998. The retaining structures of the excavation was executed through screw piles of 80cm diameter, with 23m of length, spaced at every 2,50 m. The slabs of structure of the parking had been set up with precast beams of prestressed-concrete and the bottom slab with cast in-in-place reinforced concrete. The excavation was accomplished in two phases, in the first one the walls worked as cantilever; and the second one, after the installation of the upper slab working as struts, it was made the final excavation.