Construction method for man-cargo dual-purpose elevator foundation strengthening of super high-rise building

Abstract

The invention discloses a construction method for man-cargo dual-purpose elevator foundation strengthening of a super high-rise building. The construction method comprises the following steps that 1, a sand mat is laid on a blade foot, and sole timber is lard on the sand mat; reinforcing steel bars in an open caisson are bond, and a formwork in the open caisson is installed; finally, concrete construction of the open caisson is completed; 2, after the formwork in the open caisson is dismounted, the sole timber is pulled out, and the bottom of the open caisson is excavated through an excavator until the depth of the open caisson reach designed elevation; 3, after the open caisson sinks to the designed elevation, the bottom is sealed underwater through plain concrete; 4, the outer periphery of the open caisson is backfilled with the plain concrete; and 5, a slop angle of an elevator shaft in the open caisson is backfilled with the concrete. According to the construction method for man-cargo dual-purpose elevator foundation strengthening of the super high-rise building, construction is convenient, and the construction process is easy; a foundation pit is not needed to support and protect in the excavating process of the elevator shaft and a water-collecting well, foundation soil perturbing is reduced, and the phenomena of sand boil and soil layer collapsing are avoided; the problem that sand flowing and collapsing of the foundation pit wall are hard to avoid under the condition of a high permeability coefficient underground water level is solved, and accordingly the cost is saved.

Description

technical field [0001] The invention belongs to the technical field of building construction, and in particular relates to a construction method for reinforcing the foundation of a dual-purpose elevator for people and goods in a super high-rise building. Background technique [0002] High-rise buildings and elevator pits with large buried depths are generally about 3.0m deeper than the basement floor. For super high-rise buildings, the foundation is deeper from the ground, and foundation pit support is required, and sand gushing and soil layer collapse are unavoidable. This will increase the difficulty and cost of construction. Therefore, those skilled in the art urgently need a new technical solution to solve these problems. Contents of the invention [0003] The object of the present invention is to provide a construction method for reinforcing the foundation of a dual-purpose elevator for people and goods in a super high-rise building, so as to solve the problems raised...

AI Technical Summary

Problems solved by technology

[0002] High-rise buildings and elevator pits with large buried depths are generally about 3.0m deeper than the basement floor. For super high-rise buildings, the foundation is deeper from the ground, and foundation pit support is required, and sand gushing and soil layer collapse are unavoidable. The situation occurs, which adds a lot of difficulty and cost to the construction. Therefore, those skilled in the art urgently need a new technical solution to solve these problems

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