Construction method of waterproof structure at joint between uplift pile and base plate

Abstract

The invention provides a construction method of a waterproof structure of a connection gap between an anti-pulling pile and a bottom plate. The method comprises the following steps: breaking a pile head of an anti-pulling pile and straightening steel bars exposed out of the pile head part of the anti-pulling pile; arranging a plurality of slurry injection pipes on the pile head of the anti-pullingpile, wherein the bottom ends of the slurry injection pipes are located in the connection gap between the pile head of the anti-pulling pile and the bottom plate, and the top ends of the grouting pipes are higher than the top surface of the bottom plate; firstly coating a layer of cement-based crystallization waterproof coating and epoxy mortar on the top of the anti-pulling pile; arranging a circle of water-swelling water stop adhesive in contact positions between the steel bars on the pile head part of the anti-pulling pile and the concrete of the anti-pulling pile; paving waterproof rolls;arranging a circle of polyurethane sealant in the junctions between the waterproof rolls and the anti-pulling pile along the periphery of the anti-pulling pile body; casting a fine aggregate concreteprotection layer; and injecting the slurry into the plurality of slurry injection pipes. According to the construction method, the gap between the bottom plate and the anti-pulling pile is filled byinjecting the slurry into the slurry injection pipes, so that the waterproof effect is ensured.

Description

technical field [0001] The invention relates to the technical field of rail transit underground construction, and more specifically, to a construction method for a waterproof structure at the joint between an uplift pile and a bottom plate. Background technique [0002] With the design of subway underground stations getting bigger and deeper, the stations often need to design uplift piles to increase the buoyancy of the structure itself. There are some defects in the waterproof construction of the joints between the bottom plate and the uplift piles. Traditional waterproof construction uses a combination of waterproof membranes, waterproof coatings, and sealing materials for waterproofing, which is not only time-consuming and laborious, but also cannot guarantee the waterproofing effect. Once the waterproof structure at the joint between the base plate and the uplift pile is not completed, it will bring great inconvenience to the later construction and use, and even need to ...

AI Technical Summary

Problems solved by technology

[0003] In view of the above problems, the purpose of the present invention is to provide a construction method of the waterproof structure at the seam between the uplift pile and the bottom plate, so as to solve the problem that the waterproof effect of the existing waterproof construction is not good

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