Tunnel double-layer inverted arch construction formwork, trestle and construction method

Abstract

The invention discloses a tunnel double-layer inverted arch construction formwork. The construction formwork comprises a formwork assembly, tracks, a moving trolley and a lifting component, wherein the tracks are arranged in the longitudinal direction of inverted arches, the moving trolley is arranged on the tracks, the lifting component is arranged on the moving trolley and connected with the formwork assembly, the formwork assembly comprises a plurality of arc-shaped branch plates, and every two adjacent arc-shaped branch plates are hinged. The invention further discloses a trestle. The trestle comprises two main beams arranged in parallel and further comprises the tunnel double-layer inverted arch construction formwork, and the two tracks are arranged on the outer sides of the two mainbeams correspondingly. A construction method comprises the steps that S1, a lower-layer inverted arch of a first to-be-constructed area is poured; S2, a lower-layer inverted arch of a second to-be-constructed area is poured; S3, an upper-layer inverted arch of the first to-be-constructed area is poured; and S4, an upper-layer inverted arch of the second to-be-constructed area is poured. Accordingto the tunnel double-layer inverted arch construction formwork, the trestle and the construction method, the advantages of saving the cost, guaranteeing the construction quality, being small in occupied space, convenient in use and the like are achieved.

Description

technical field [0001] The invention relates to tunnel inverted arch construction technology, in particular to a tunnel double-layer inverted arch construction template, a trestle bridge and a construction method. Background technique [0002] Restricted by factors such as the geological conditions where the tunnel is excavated, part of the inverted arch layer needs to be poured with concrete of different grades on the upper and lower layers, which means that the inverted arch of this section needs to be constructed twice. At present, there are mainly two methods of small formwork splicing construction and two sets of formwork construction. Splicing construction with small formwork requires splicing twice successively. A single splicing requires a long time, low efficiency, high labor intensity, and cannot guarantee the construction quality; although two sets of formwork can be used for construction, the efficiency can be improved and the construction quality can be guarante...

AI Technical Summary

Problems solved by technology

Splicing construction with small formwork requires splicing twice successively. A single splicing requires a long time, low efficiency, high labor intensity, and the construction quality cannot be guaranteed; although two sets of formwork can be used for construction, the efficiency can be improved and the construction quality can be guaranteed. The cost is high, and the two sets of formwork will occupy the limited space in the tunnel, which cannot be installed, and longer trestles are required to meet the construction of three sections

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