Large-span all-hydraulic tire walking tunnel inverted arch trestle and construction method

Abstract

The invention belongs to the technical field of tunnel inverted arch construction equipment. A large-span all-hydraulic tire walking tunnel inverted arch trestle comprises a main bridge, a front slopebridge, a rear moving mechanism and a walking trolley, wherein a supporting leg is arranged at the bottom of the main bridge, and the front slope bridge is arranged at the front end of the main bridge; the rear slope bridge is arranged at the rear end of the main bridge; the rear moving mechanism is arranged at the rear end of the main bridge and drives the main bridge to act; the lower part of the walking trolley is provided with a walking supporting leg, and the walking trolley and the main bridge can move relatively. The invention also discloses a construction method of the large-span fullhydraulic tire walking tunnel inverted arch trestle. The method solves the problems of the interference of inverted arch construction and tunnel face traffic operation, the problem that the trestle automatically passes through a section without an inverted arch, and the difficult problem of excavation under a front slope bridge. The large-span all-hydraulic tire walking tunnel inverted arch trestle and the method are high in adaptability in both step-method excavation and full-section excavation; in addition, the structure is simple, the field assembling is convenient; a 24 m effective inverted arch construction interval is realized; and the efficiency of tunnel construction is improved.

Description

technical field [0001] The invention belongs to the technical field of tunnel inverted arch construction equipment, and in particular relates to a large-span fully hydraulic tire-walking tunnel inverted arch trestle and a construction method. Background technique [0002] Tunnel inverted arch trestle is a device to solve the problem of interference between inverted arch construction and tunnel face construction, which can speed up the construction progress. At present, there are many problems with inverted trestle bridges. Trestle bridges with a span of 12m are widely used. During the construction, only 12m inverted arch formwork can be used for one construction, and the next cycle of construction needs to wait for the concrete to solidify, which affects the construction progress; the inversion angle of the front slope bridge Small, it is difficult to meet the excavation of the whole section and the excavation by the step method; the height difference between the front and t...

AI Technical Summary

Problems solved by technology

At present, there are many problems in the inverted trestle bridge. The trestle bridge with a span of 12m is widely used. During the construction, the 12m inverted arch formwork can only be constructed once. It is necessary to wait for the concrete to solidify before proceeding to the next cycle of construction, which affects the construction progress; Small, it is difficult to meet the excavation of the full section and the excavation by the step method; the height difference between the front and rear of the trestle is large, and it is difficult to meet the convenience of the trestle without the inverted arch section when it is suitable for the inverted arch section; for this reason, a universal and automatic method is proposed. High large-span fully hydraulic tire walking tunnel inverted arch trestle bridge

Images