Comprehensive anti-seepage system of near-channel construction shortcut and construction method

A technology for construction access roads and waterways, which is applied in the direction of foundation structure engineering, construction, and sheet pile walls, etc., and can solve the problem of pile cracks, damage to the close combination of bored piles and high-pressure jet grouting piles, and the adverse effects of anti-seepage effects To achieve the effect of increasing anti-seepage stability, improving the ability to resist dynamic and static loads and water-stopping ability, and improving safety and reliability

CN114673185APending Publication Date: 2022-06-28ANHUI SHUIAN CONSTR GRP CO LTD +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2022-06-28

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Abstract

The invention discloses a comprehensive anti-seepage system for a near-channel construction shortcut, which adopts row piles formed by combining cast-in-situ bored piles and high-pressure jet grouting piles, and comprises front-row piles close to a near-channel side, rear-row piles close to a foundation pit side, and a main anti-seepage wall arranged in the front-row piles and the rear-row piles along the extending direction of the row piles; the end parts of the front-row piles and the rear-row piles are in closed connection through side-row piles; the main anti-seepage wall extends to the side row piles in the direction of the side row piles at the inflection point of the edge of the foundation pit; the main anti-seepage wall extends towards the rear-row piles at the inflection point of the edge of the foundation pit in the direction perpendicular to the main anti-seepage wall, and an auxiliary anti-seepage wall is formed. The auxiliary diaphragm wall penetrates through the rear-row piles and is in parallel lap joint with the downstream full-cofferdam diaphragm wall on the outer side of the foundation pit, and the lap joint area is subjected to soil consolidation through high-pressure rotary jet grouting; the top elevation of the main diaphragm wall is lower than the bottom elevation of the upper structure, and the main diaphragm wall and the upper structure are flexibly connected. The safety and reliability of the comprehensive anti-seepage system of the near-channel construction shortcut are improved.
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Description

technical field

[0001] The invention relates to the technical field of water conservancy engineering, in particular to a comprehensive anti-seepage system and a construction method for an access road near a waterway. Background technique

[0002] With the development of economy and society, single-line ship locks can not meet the demand of passenger and freight volume gradually, and there are more and more double-line ship lock projects. The construction site of the double-track ship lock is often close to the original first-line ship lock and waterway. The construction site usually builds a construction access road adjacent to the waterway to meet the needs of construction personnel, vehicles and material transportation. The construction access road near the waterway is built between the construction foundation pit and the waterway. The construction process is often limited in space, and its safety and stability have a great impact on shipping. During the operation of the ...

Examples

Embodiment

[0049] A comprehensive anti-seepage system for the construction access road near the waterway, the specific settings are as follows:

[0050] The thickness of the anti-seepage wall is 0.4m in width;

[0051] After the main anti-seepage wall in the direction of the central axis of the double-row piles is constructed to the inflection point A at the edge of the foundation pit, continue to extend 5m in the direction of the side-row piles in the double-row piles to point B to form an auxiliary anti-seepage wall;

[0052] The main anti-seepage wall is at the inflection point A at the edge of the foundation pit, and extends to the rear row of piles in the direction perpendicular to the central axis of the double row piles, and passes through the two adjacent bored piles in the rear row of piles, and is connected to the outside of the foundation pit. The downstream full cofferdam anti-seepage wall is overlapped in parallel, and the length of the overlap area 4 is 4m and the width is ...