Assembling type reaction frame device for shield launching and propulsion

Abstract

The invention discloses an assembling type reaction frame device for shield launching and propulsion, and the device is arranged on a bottom plate of a work shaft, wherein the reaction frame device comprises a frame and a plurality of supporting rods; the frame is connected to the bottom plate of the work shaft by a hinge; the first ends of the supporting rods are connected with the frame; the second ends of the supporting rods are connected with the bottom plate of the work shaft; the frame is coaxial to a tunnel portal; the frame further comprises two cross beams and two vertical beams which are mutually connected to form a rectangular frame; the frame also comprises a plurality of reaction ring assembling beams and a plurality of bolt holes; the reaction ring assembling beams are arc-shaped and are respectively connected at the four corners in the rectangular frame; the surfaces of the reaction ring assembling beams and the surface of the rectangular frame form a plane; and the bolt holes are distributed on the surface of the frame and are corresponding to the positions of longitudinal bolt holes of pipe pieces. Since the whole assembling structure can be repeatedly utilized and the position can be freely adjusted, the assembling type reaction frame device is applicable to different types of work shafts.

Description

technical field [0001] The invention relates to a device in the technical field of building tunnel engineering construction, in particular to an assembled shield starting propulsion reaction force frame device. Background technique [0002] With the development of the economy, shield tunneling has become the main construction method for urban underground rail transit construction and underground space development in soft soil areas in my country. The so-called shield tunneling method refers to the tunnel underground excavation construction method in which shield tunneling machines are used for excavation and reinforced concrete segments are used as lining support. The shield method is used to construct tunnels or various underground pipelines. Generally, the installation, commissioning and trial operation of the shield are carried out in the pre-built working well, and it is accurately placed on the base that conforms to the design axis. After the preparations are ready, ex...

AI Technical Summary

Problems solved by technology

[0005] The existing shield starting reaction frame usually adopts reinforced concrete structure or section steel welding to design components according to the working well conditions. The shield starting reaction frame can only be used for specific projects and has poor applicability. After the shield starting is completed, it can be chiseled or disassembled and cannot be reused

When the shield machine starts to advance, it is extremely difficult to assemble the negative ring segment of the first ring, and the roundness of the segment is difficult to guarantee. It is easy to delay the construction period and even cause engineering accidents

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