Waterproof and drainage system for deformation joint based on automatic drainage function and construction process thereof

Abstract

The invention discloses a waterproof and drainage system for a deformation joint based on an automatic drainage function and a construction process thereof. The deformation joint is circumferentiallyprovided with a channel or multiple channels along an underground space to be closed to form a loop, a drainage ditch is arranged at the foot of the wall of the side wall of the underground space, thedrainage ditch is longitudinally arranged along the underground space and is connected with the deformation joint in a penetrating mode, the tail end of the drainage ditch is connected to a water collection pit or a water collection well, and the deformation joint arranged in the horizontal direction and the interior of the drainage ditch are both provided with longitudinal slopes with slope notless than five thousandth. The waterproof and drainage system for the deformation joint based on the automatic drainage function has the advantages of being simple in process, simple and convenient inconstruction, high in economic benefit and high in social benefit, and has wide application prospects in projects such as urban rail transits, railways, and highways.

Description

technical field [0001] The invention belongs to the technical field of tunnel engineering, and in particular relates to a deformation joint waterproof and drainage system based on an automatic drainage function and a construction process thereof. Background technique [0002] For various structural projects, the current design code requires that deformation joints (settlement joints) should be considered at places where stratum conditions change, structural form changes, and load changes. Therefore, deformation joints (settlement joints) widely exist in various engineering fields. But For the current underground projects in major cities in China, the problem of water leakage from deformation joints is extremely prominent, and some deformation joints even experience water inrush and leakage during heavy rain seasons. The resulting economic losses and maintenance costs have become It is a prominent factor restricting the development of underground space. [0003] The undergro...

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Problems solved by technology

However, for the current underground projects in major cities in China, the problem of water leakage from deformation joints is extremely prominent, and some deformation joints even experience water inrush and leakage during heavy rain seasons. become a major factor restricting the development of underground space

[0003] The underground structure at the deformation joint is disconnected and discontinuous, so it becomes a potential seepage channel for groundwater. Three waterproof devices from the outside to the inside are formed through the external waterstop, the central waterstop and the water receiving box. Due to the limited construction technology and technical level, it is difficult for the deformation joint waterproof system to completely seal the groundwater outside the structure. "Ten seams and nine leaks" have long been recognized in the industry, especially in water-rich areas.

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