An installation structure and method for accurate positioning of buried waterstops in lining of tunnel arch walls

Abstract

The invention discloses an installation structure for accurate positioning of buried waterstops in the lining of tunnel arch walls. A mid-buried waterstop (4) is arranged between an upper mold (1) and a lower mold (2). The bottom of the buried waterstop (4) is equipped with a reinforcement card (5); the lower edge of the upper mold (1) is equipped with a twisted screw (8), and the buried waterstop between the upper mold (1) and the lower mold (2) The belt (4) is clamped and fixed by the twisted screw (8), the screw (6) is set in the middle of the lower mold (2), the winch (3) is set on the lower edge of both sides, the support channel steel (7) and the lower mold (2) The center is supported by a screw rod (6). Since the installation structure is all steel except for the wooden formwork inserts, plus the joint reinforcement of the support channel steel and the screw rod, the formwork will not be deformed during the concrete pouring process, and the buried stop will not be fixed during the formwork removal process. Water carries damage. After the demolition of the formwork, the buried waterstop is standard and smooth, which ensures the waterstop effect of the tunnel lining concrete ring construction joints.

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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