Longitudinal positioning and connecting device for support arch frame of underground project and construction method

Abstract

The invention discloses a longitudinal positioning and connecting device for a support arch frame of an underground project and a construction method. The longitudinal positioning and connecting device comprises a connecting rod, a first fixing device and a second fixing device, wherein one end of the connecting rod is a spherical round head, and a first threaded hole is formed in the spherical round head; the other end of the connecting rod is of a swelling structure; the first fixing device is used for providing a clamping structure for clamping and fixing the swelling structure, and the inner diameter of the clamping structure is smaller than the outer diameter of the swelling structure; and the second fixing device is of a hollow structure formed by surrounding of a shell, the end part of the hollow structure is opened, a second threaded hole matched with the first threaded hole is formed in the shell, and the diameter of the spherical round head is larger than the inner diameter of the end part of the hollow structure and smaller than the inner diameter of a main body part of the hollow structure. The longitudinal positioning and connecting device has the beneficial effects that the positioning is convenient and flexible, and the construction period is shortened. By utilizing the device, the longitudinal connection and accurate positioning of the support arch frame can be realized by only moving the arc frame, aligning the arc frame and inserting the arc frame into the first fixing device, so that the construction time is greatly saved, and the construction safety is improved.

Description

technical field [0001] The invention relates to an underground engineering supporting arch longitudinal positioning connection device and a construction method. Background technique [0002] With the continuous development of my country's infrastructure construction, more and more attention has been paid to the construction of underground engineering. With the rapid development of construction scale and speed, the construction speed and construction safety of the initial support of underground engineering have been widely concerned, so the mechanized operation of the arch frame has become a key technology that needs to be solved urgently. The traditional longitudinal connection method of the arch frame mostly adopts the three-point stakeout method. The tunnel cross-section vault and the arch feet on both sides are measured and staked out by a total station to determine the elevation and installation position of the tunnel arch frame, and then the steel bars are connected by ...

AI Technical Summary

Problems solved by technology

[0007] In order to solve the above-mentioned problems, the present invention proposes a longitudinal positioning connection device and construction method for underground engineering support arches. The positioning connection device can realize the fast and accurate positioning of the second arch frame, so as to solve the problems of long time occupied by the positioning of the arch frame, low precision and waste of personnel.

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