Circular tensioning connection method for insulation board clamped by double waterproof boards for tunnel

Abstract

The invention provides a circular tensioning connection method for an insulation board clamped by double waterproof boards for a tunnel, and the method comprises the following steps: clearing up a preliminary bracing surface and laying earthwork cloth; laying a first waterproof plate on the surface of the earth cloth; employing leftover materials of the first waterproof plate to make a plurality of connecting bands; enabling the lower ends of two connecting bands to be welded on the first waterproof plate in a parallel manner; enabling a first thermal insulation board to be placed between the connection bands and the first waterproof plate; enabling the two connection bands to be tensioned from the bottom to the top, and to be sequentially wound around the lower and upper ends of the first thermal insulation board; enabling the upper ends of the connection bands to be welded to the first waterproof plate; sequentially installing a plurality of thermal insulation boards from the bottom to the top; and enabling a second waterproof plate to cover the plurality of thermal insulation boards, and to be welded to the connection bands. According to the invention, the leftover materials of the first waterproof plate are used for making the connecting bands, and the connection bands are used for fixing the thermal insulation boards through the connection bands welded on the two waterproof plates, thereby solving problems that the thermal insulation boards between the two waterproof plates are difficult to install, and the thermal insulation boards are liable to fall in a process of secondary lining concrete pouring.

Description

technical field [0001] The invention relates to the field of tunnel engineering, in particular to a hoop-tensioning connection method of a double-layer waterproof board sandwiching a thermal insulation board in a tunnel. Background technique [0002] In order to prevent frost heave damage in the shallow buried section of the tunnel entrance in severe cold areas, double-layer waterproof boards are usually laid within 500m of the tunnel entrance, using three layers of materials: "waterproof board + insulation board + waterproof board". However, during the laying process, the tunnel double It is very difficult to install and fix the insulation board between the waterproof boards of the second layer, and the insulation board is easy to collapse during the secondary lining concrete pouring process, which causes construction difficulties and is not conducive to economic benefits. [0003] In view of this, in order to solve the above-mentioned technical problems, the inventors base...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a tunnel double-layer waterproof board clip insulation board hoop tension connection method, use the waterproof board corner material to make the connection belt, and fix the insulation board through the connection belt welded to the two-layer waterproof board, which solves the problem of It is difficult to install the insulation board between the two waterproof boards, and the insulation board is easy to collapse during the secondary lining concrete pouring process.

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