Construction Organization Design of Deep Foundation Pit of Ocean Mansion
Project name: Construction scale of pile foundation works of xx Building: the total construction area is 44634 square meters, of which the ground construction area is about 36134 square meters, and the underground construction area is about 8500 square meters. The scope of this bid includes the pile foundation part and the support part, and the details are as follows: 1.1 The scope of the pile foundation work of the pile foundation part includes all the concrete bored piles of 6 #, 7 #, 8 #, 9 # and the underground garage, with a total of 499 piles. Among them, there are 167 uplift piles in 6 # project, with a pile diameter of 600mm, a pile length of 36m, and a pile shaft concrete of C35 (P8); There are 52 uplift piles in 7 # project, with the pile diameter of 600mm, the pile length of 20m, and the pile body concrete of C35 (P8); There are 123 uplift piles in 8 # project, with a pile diameter of 600mm, a pile length of 27m, and a pile shaft concrete of C35 (P8); There are 50 uplift piles in 9 # project, the pile diameter is 600mm, the pile length is 20m, and the pile body concrete is C35 (P8); The underground garage project has 107 uplift piles with a diameter of 600mm, a length of 20m, and a pile shaft concrete of C35 (P8). 1.2 Foundation pit support Part The foundation pit support part is divided into support bored pile, double shaft mixing pile, dewatering well, observation well, and support pile, of which the diameter of support bored pile is 700mm, the length of pile is 15.5m, the number of piles is 352, and the concrete strength is C25; The diameter of biaxial mixing pile is 700mm, the pile length is 12m, the number of piles is 361 groups, the cement is PS32.5, and the mixing ratio is 15%; The diameter of dewatering wells is 700 mm, the depth is 12 meters, and the number of wells is 50; The diameter of observation wells is 700 mm, the depth is 6 meters, and the number of wells is 12; The diameter of the supporting pile is 700 mm, the effective pile length is 16.5 meters, the concrete is C25, and the number of piles is 51.
