Installation structure and method for accurately positioning tunnel arch wall lining buried type water-stop belt

Abstract

The invention discloses an installation structure for accurately positioning a tunnel arch wall lining buried type water-stop belt. The buried type water-stop belt (4) is arranged between an upper formwork (1) and a lower formwork (2), and a steel bar clamp (5) is arranged at the bottom of the buried type water-stop belt (4). Belt twisting threaded rods (8) are arranged on the lower edge of the upper formwork (1), and the buried type water-stop belt (4) between the upper formwork (1) and the lower formwork (2) is fixedly clamped through the belt twisting threaded rods (8). A lead screw (6) is arranged in the middle of the lower formwork (2), and twisting bases (3) are arranged on the lower edges of the two sides of the lower formwork. The lead screw (6) is used for supporting between a supporting pad steel channel (7) and the lower formwork (2). According to the installation structure, the other components excepting a wood pattern insertion plate are of a steel structure, and in addition, the supporting pad steel channel and the lead screw act together to have a reinforcing function, so that the formworks do not deform in the casting process of concrete, and meanwhile the buried type water-stop belt is not damaged in the dismantling process of the formworks. After the formworks are dismantled, the buried type water-stop belt is buried in a standard and even mode, and the water-stop effect of tunnel lining concrete circumferential construction seams is guaranteed.

Description

technical field [0001] The invention relates to an installation structure for accurate positioning of buried waterstops in tunnel arch wall linings. Background technique [0002] With the rapid development of high-speed railways, the standards for tunnel construction are getting higher and higher. However, water leakage in tunnel linings is not uncommon, and most of them occur at the construction joints, deformation joints and settlement joints of the lining. The main reason is that the construction of the buried waterstop at the circumferential construction joint (deformation joint) of the tunnel is not standardized, and there are always defects in the installation and positioning. The specific operation method is to fold back 1 / 2 of the width of the waterstop by 90° with the positioning steel clip, and then fix 1 / 2 of the waterstop to the lining end formwork (usually a wooden formwork), and dismantle it after the concrete is poured. After molding, straighten and straighte...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide an installation structure for the accurate positioning of buried waterstops in the lining of tunnel arch walls, so as to overcome the existing problems in the prior art that the embedded concrete is of different depths, and the exposed parts are not round and smooth and easy to seep. Leakage and other issues

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