Slidable inverted arch formwork and construction method thereof

Abstract

The invention discloses a slidable inverted arch formwork. The slidable inverted arch formwork comprises a middle formwork body and side formwork bodies located on the two sides of the middle formworkbody, first longitudinal rails arranged in the longitudinal depth direction of an inverted arch are arranged on the side formwork bodies, a telescopic frame capable of being adjusted in a telescopicmode is arranged on the middle formwork body, and the telescopic frame can be slidably arranged on the first longitudinal rails in a reciprocating mode along the first longitudinal rails. The invention further discloses a construction method of the slidable inverted arch formwork. The construction method comprises the following steps that S1, the side formworks are fixed; S2, the middle formwork is installed; S3, the position of the middle formwork is adjusted; S4, pouring and sliding of the middle formwork are conducted; S5, the middle formwork is lifted, and the surface of the middle inverted arch is treated; and S6, integral moving is conducted. The slidable inverted arch formwork and the construction method thereof have the advantages that construction is convenient, the construction cost can be reduced, and construction convenience and construction efficiency can be improved.

Description

technical field [0001] The invention relates to tunnel construction equipment, in particular to a slidable inverted arch template and a construction method thereof. Background technique [0002] In recent years, with the continuous development of tunnel construction technology in our country, in order to effectively improve the stability and durability of the inverted arch structure, a new understanding of the requirements for inverted arch construction has been obtained. The formwork for inverted arch construction is first optimized from a simple single block formwork to an integral low side wall inverted arch formwork driven by a trestle bridge, and then to a full-width inverted arch formwork with a full inverted arch section formwork. The tunnel invert layer is constructed with a full-width invert formwork, which increases the cost of the formwork and further reduces the construction space of the invert. During pouring construction, the invert layer is below the formwork ...

AI Technical Summary

Problems solved by technology

The tunnel invert layer is constructed with a full-width invert formwork, which increases the cost of the formwork and further reduces the construction space of the invert. During pouring construction, the invert layer is below the formwork and can only be poured and vibrated through the working window. Can't fully vibrate

In actual construction applications, air bubbles are likely to form on the surface of the final inverted arch concrete, and the layout of the full-width inverted arch formwork cannot be used for puree plastering and timely secondary cleaning on the surface of the inverted arch layer. The air bubbles affect the appearance of the inverted arch layer. , but also with certain security risks

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