Construction method of protection layer of foundation pit oblique plane waterproof layer

Abstract

The invention discloses a construction method of a protection layer of a foundation pit oblique plane waterproof layer. The method is adopted on the foundation pit waterproof oblique plane with the angle being larger than or equal to 45 degrees, and conventional fine aggregate concrete is replaced by galvanized iron sheets to serve as the protection layer of the waterproof layer. The method specifically comprises the first step of preparing materials for the protection layer, wherein a metal skin with good extensibility is customized according to the area of the constructed foundation pit waterproof oblique plane to serve as the protection layer; the second step of pasting the protection layer on the waterproof layer oblique plane, wherein one face of the protection layer is coated with a binding agent and the oblique plane waterproof layer is externally paved with the protection layer; the third step of clipping and edge repairing, wherein clipping is carried out according to the actual situation on the spot, and a little galvanized sheet iron is used for repairing the edges at the junction of a thin part. The metal skin with good extensibility serves as the protection layer and is galvanized sheets with the thickness ranging from 0.35 mm to 0.5 mm, the binding agent coated on the back face of the protection layer is 502 glue, and the metal skin serving as the protection layer can be formed by splicing the galvanized sheets and binding the galvanized sheets through a seal adhesive belt with the width ranging from 50 mm to 70 mm. The construction method is convenient to apply, time and labor are saved, and the protection effect for the waterproof layer is good.

Description

technical field [0001] The invention relates to a building construction method, in particular to a construction method for a protective layer of a foundation engineering waterproof layer inside a high-rise building. Background technique [0002] With the gradual shortage of construction land, there must be more and more high-rise buildings, and there must be more and more types of foundations such as rafts and bottom slabs with corresponding waterproof requirements; and the side slope of the foundation pit of the water collection well, etc.), the engineering design requires a protective layer for the waterproof layer. The current design requirement is: add a layer of 50 thick C20 fine stone concrete on the existing waterproof layer for protection However, during the construction process, it was found that if a fine stone concrete protective layer is added to the waterproof layer laid on the horizontal surface, due to its own gravity, it is relatively easy to operate and stab...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a "construction method for foundation pit slope waterproof layer protective layer" that is convenient for construction, saves time and effort, and has a good protective effect on the waterproof layer, so as to solve the problem of the existing design and construction method when the waterproof layer is a slope of ≥ 45 degrees. Under certain conditions, it is very difficult to lay a fine stone concrete protective layer on the existing slope waterproof layer, and the construction process is time-consuming, laborious, and the effect is not good.

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