Elevator for deep foundation pit excavation by inverse construction method, and excavation system and method

Abstract

The invention relates to the field of civil engineering construction, in particular to equipment, a system and a method used by deep foundation pit excavation construction, and discloses a lifter used by deep foundation pit excavation using a topdown construction method. The lifter comprises a bracket, a lifting mechanism and a lift car, wherein, the bracket is fixed on a basement top plate; the lifting mechanism is fixed on the bracket; the lift car is connected with the lower end of the lifting mechanism which drives the lift car to move up and down; and the lift car can load heavy construction vehicles. The invention also discloses a system and a method used by deep foundation pit excavation construction using the topdown construction method, which comprise heavy construction machinery, wherein, the heavy construction machinery comprises an earth transporting vehicle, an excavator excavating on the excavation working face of the bottom of the foundation pit as well as the lifter arranged on the basement top plate; and the heavy construction machinery realizes excavating, earth loading and earth transporting by the reciprocating transportation of the lifter between the basement top plate and the bottom of the foundation pit. The invention can effectively improve the excavation efficiency, reduce the excavation cost and reduce the influence of the underground excavation construction on the synchronous superstructure construction to the minimum.

Description

technical field [0001] The invention relates to the field of civil construction, in particular to equipment, a system and a method for excavating soil in deep foundation pits. Background technique [0002] Existing excavation construction methods mainly adopt long-arm excavators and crawler grab excavators. like figure 1 Shown is the excavation construction method using the long-arm excavator 3: After the basement roof (±0.00 board) is completed, the soil in the basement is dug with an excavator, transported to the excavation hole, and then unearthed by stopping on the ±0.00 board The long-arm excavator 3 on the side of the hole is vertically lifted and loaded and transported outside. like figure 2 Shown is the excavation construction method using the crawler grab excavator 4: when the construction reaches the third, fourth, or even fifth underground floors of the basement, the long-arm excavator 3 parked on the ±0.00 plate cannot meet the requirements of the excavation ...

AI Technical Summary

Problems solved by technology

[0007] e) Since the lever of the long-arm excavator or crawler grab excavator at the side of the excavation hole needs to be rotated when lifting and loading soil, it needs a large operating space. came a very big impact

Therefore, most of the top-down method projects at present only start the construction of the superstructure after the underground excavation is completed, and the speed-up of the construction period of such a top-down method has also been greatly affected.

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