Air bag type sealing structure for deformation joint of open trench tunnel

Abstract

The invention discloses an air bag type sealing structure for a deformation joint of an open trench tunnel. A groove along the whole circle of the inner wall of the tunnel in the circumferential direction is formed in the position, with the deformation joint, of the inner wall of the tunnel; the deformation joint is filled with filling materials; the open end of the groove is provided with a baffle fixed to the inner wall of the tunnel, and an air bag type waterstop is arranged in the groove; and the air bag type waterstop is provided with an inflation valve penetrating out of the baffle. Because the back-loading type waterstop is adopted, the air bag type sealing structure is not limited by the conditions on a construction site, high-standard protection on the site is not needed, and meanwhile, the air bag type sealing structure for the deformation joint is also applicable to fault rectification of an existing tunnel; the air bag type waterstop can be replaced without influencing the use functions, and the request for durability is met; and a uniform air pressure monitoring system and an automatic inflation system can be built to form an intelligent waterproof system with an automatic maintenance function.

Description

technical field [0001] The invention belongs to the technical field of tunnel waterproofing, and is not only applicable to the treatment of water leakage from deformation joints of existing tunnels, but also can be used as an airbag-type open-cut tunnel deformation joint sealing structure for strengthening measures for the waterproof design of deformation joints of newly-built tunnels. Background technique [0002] In recent years, with the large-scale construction of highways, railways and urban subways, more and more open-cut tunnel projects have emerged. These tunnel projects are buried deep underground and surrounded by water all year round, which tests the waterproof ability of the tunnels. However, subject to the limitations of technology and construction level, the waterproofing of tunnels has always been a technical problem in the industry, and many built or newly built tunnels have experienced water leakage. Tunnel water leakage includes deformation joint leakage, w...

AI Technical Summary

Problems solved by technology

However, subject to the limitations of technology and construction level, the waterproofing of tunnels has always been a technical problem in the industry, and many existing or newly built tunnels have experienced water leakage.

On the one hand, the existing technology is limited by the positional relationship of the mid-buried steel edge rubber waterstop. When the concrete is poured, it is difficult to effectively vibrate the concrete nearby, resulting in a water leakage path; on the other hand, it is limited by the construction level. It is difficult to accurately locate and effectively protect the type steel-edged rubber waterstop. Damage or displacement occurs during the concrete pouring process, resulting in a leaking path

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