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一、工程概况与环境特点 1.基础工程概况 (1)海仑宾馆工程采用钻孔灌注桩承重,桩长71.64m,桩直径设计为850mm,总根数为296根,单桩设计承载能力为300t。 (2)该工程基础平面尺寸为56 x 51.5m,基础实际开挖深度分别为-8.15m、-8.80m、-9.60m和-10.60m,基础承台厚度为2.80m(电梯井加深部分厚达5.25m.),混凝土工程总量为8600m～3。 2.本工程的环境特点 (1)地处闹市中心,施工场地几乎等于零; (2)交通繁忙,人流拥挤; (3)工地四周管线密布,纵横交错; (4)居民密集、危房成片; (5)工期特别紧。二、基础承台混凝土(8600m～3)浇捣方案的选择在基础承台混凝土浇捣方案的选择时,为了减
I. Project Overview and Environmental Characteristics 1. Overview of Basic Projects (1) The support of bored piles for the construction of the Hailun Hotel Project is 71.64m in length, 850mm in the diameter of the pile, and 296 in total. The designed bearing capacity of the single pile is 300t. (2) The basic plane size of the project is 56 x 51.5m, and the actual excavation depth of the foundation is -8.15m, -8.80m, -9.60m and -10.60m respectively, and the thickness of the foundation slab is 2.80m (the depth of the elevator shaft is increased Up to 5.25m.), the total number of concrete works is 8600m-3. 2. Environmental characteristics of the project (1) It is located downtown and the construction site is almost equal to zero; (2) The traffic is heavy and crowded; (3) The pipelines around the site are dense and criss-cross; (4) The residents are dense and the houses are in danger; (5) The schedule is particularly tight. Second, the selection of the foundation cap concrete (8600m～3) cast concrete plan is to reduce