Waterproof method for precast pile head

Abstract

The invention discloses a waterproof method for a precast pile head. The method comprises the following steps of: sheathing a pile head water stopper into the pile head; opening the inner ring of the pile head water stopper, injecting epoxy resin adhesive into the inner ring, sticking one wing of the pile head water stopper to the outer wall of the pile head, and sticking the other wing of the pile head water stopper to the pad layer of a bottom plate; and spreading a bottom plate waterproof coiled material on the pad layer of the bottom plate, and welding or sticking the other wing of the pile head water stopper to the bottom plate waterproof coiled material. In the waterproof method, one wing of the pile head water stopper is stuck to the outer wall of the pile head steel pipe, the other wing of the pile head water stopper is stuck to the pad layer of the pile head, and the other wing of the pile head water stopper is welded or stuck to the bottom plate waterproof coiled material spread on the pad layer, so that a waterproof layer of the pile head and the bottom plate waterproof coiled material are seamlessly connected, the underground water is prevented from entering the surface of a basement bottom plate through a construction seam between the bottom plate and the outer wall of the pile head, and the waterproof reliability is improved.

Description

technical field [0001] The invention relates to building waterproofing, in particular to a waterproofing method for prefabricated pile heads. Background technique [0002] According to GB50108-2009 "Technical Specifications for Underground Engineering Waterproofing", the design, material and process of pile head waterproofing have a direct and important impact on the success or failure of underground engineering waterproofing. A flexible outer waterproof layer is set on the water-facing surface of the bottom plate, and it is definitely not easy to achieve reliable waterproofing. This is because the cap and the cushion are post-cast, and there is a construction joint between the pile head, the cap and the cushion, and the groundwater under pressure will enter the basement through the construction joint between the cushion and the wall of the steel pipe at the pile head. The surface of the bottom plate, so the flexible waterproof layer arranged on the upstream surface of the ...

AI Technical Summary

Problems solved by technology

[0002] According to the provisions of GB50108-2009 "Technical Specifications for Waterproofing of Underground Engineering", the design, materials and process of pile head waterproofing have a direct and important impact on the success or failure of underground engineering waterproofing. Due to the influence of existing technologies, materials and other factors, in A flexible outsourcing waterproof layer is provided on the facing surface of the bottom plate. To achieve reliable waterproofing, it is definitely not easy to do

This is because the cap and the cushion are post-cast, and there is a construction joint between the pile cap, the cap and the cushion, and the pressurized groundwater will enter the basement through the construction joint between the cushion and the steel pipe wall of the pile head. The surface of the bottom plate, so the flexible waterproof layer set on the water-facing surface of the bottom plate is difficult to achieve reliable waterproofing

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