Cast-in-place underground diaphragm wall and cast-in-place subway station construction integrated method

Abstract

The invention relates to a cast-in-place underground diaphragm wall and cast-in-place subway station construction integrated method. The method comprises the following steps that a lifting machine, a grouting machine and a hydraulic grab are assembled on a bearing girder of a gantry crane, slotting machines are assembled on landing legs of the gantry crane, and rails of the combined gantry crane and rails of the slotting machines are laid at the corresponding positions of a construction site, and the combined gantry crane is erected at the starting position of the construction range of a subway station; trench excavating of an underground diaphragm wall is conducted through the slotting machines of the combined gantry crane; by means of the lifting machine and the grouting machine of the combined gantry crane, the underground diaphragm wall is constructed; a foundation pit is excavated through the hydraulic grab of the combined gantry crane; accurate positioning is conducted on a cast-in-place bottom plate at the head ring, and the accurate position of a cast-in-place station is determined; according to the position determined in the fifth step, a station main structure is poured and constructed through the grouting machine of the combined gantry crane and manual cooperation; and an inner structure of the station is cast through the grouting machine of the combined gantry crane, then soil covering and backfilling are conducted, and station construction is finished.

Description

technical field [0001] The invention relates to the field of underground construction engineering, in particular to a method for integrating the construction of a cast-in-place ground connecting wall and a cast-in-place subway station. Background technique [0002] Traditional subway station construction often adopts open-cut method, cover-excavation method or shield tunneling method. These subway station construction methods have certain limitations and can only be applied to certain special geological or environmental conditions. With the advancement of underground engineering construction technology and new material production technology, a construction method of integrated, modular foundation pit excavation and subway station pouring has emerged. This method has the characteristics of low environmental pollution, fast construction speed, and high efficiency. development prospects. [0003] Chinese patent CN104762990A provides a method for constructing a modular subway s...

AI Technical Summary

Problems solved by technology

The number of construction equipment required is large, and the cost of machinery is high

[0007] 2. Each independent equipment needs to occupy more time and space resources when entering and exiting the field, the degree of integration is low, the construction cost is high, and the efficiency is low

[0008] 3. The operating machinery and operating steps are scattered, which requires more manpower and higher labor costs

[0010] However, due to the impression given to people by its name, the gantry crane specifically refers to the equipment used for lifting or hoisting. It is difficult to think of using the gantry crane for other purposes, resulting in the huge equipment of the gantry crane not being fully utilized in all aspects.

Images