A construction method for sealing and waterproofing of basement access openings

Abstract

The invention provides a blockage and waterproof construction method of a basement external channel port. The method comprises such steps as underground foundation pit treatment, building and plastering of foundation pit side wall surfaces, waterproof coiled material pavement on the foundation pit side wall surfaces, building blockage of protection walls and inner side decoration construction of the protection walls. The method solves the defect of limited operation surface under traditional construction technological conditions, adjusts measures to local conditions, fully uses support piling structures in a traditional foundation pit as support structures, saves blocked structural walls, and meanwhile, applies the prepavement water prevention technology generally used for baseplate water prevention to vertical wall surfaces; and the channel blockage and waterproof construction method with simple operation, improvement of the working efficiency and good waterproof effect is provided.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a temporary sealing and waterproofing construction method for a basement outdoor access opening. Background technique [0002] In the underground waterproofing construction, we often encounter temporary blockage and waterproof treatment of various passage openings, such as the connecting passage between the first phase and the second phase of the building. Before the construction of the second phase, the internal passage opening of the first phase needs to be Temporary blockage, because most of the passage openings are close to the side wall of the foundation pit, and the space is narrow, it is difficult to construct this part according to the conventional external anti-interior bonding method, and there are many joints around the passage, improper handling, and leakage is also very easy to occur. How to temporarily block and waterproof the passage opening has becom...

AI Technical Summary

Problems solved by technology

[0005] At present, in the construction of construction projects, the foundation pits of buildings designed with underground passages (civil air defense, fire evacuation passages) are all deep foundation pits, and there are supporting rows of piles in the foundation pits. The mouth has a length of about 2000mm protruding from the outer wall. From the perspective of economical savings, generally only a 300mm gap is left between the end of the passage opening and the side wall of the foundation pit, and the sealing is mostly made of iron plates that will be coated with anti-corrosion oil. It is sealed and welded with the water-stop steel plate on the cross-section of the passage opening, but the wall of the water-stop steel plate is generally thin, and the post-installed iron plate is easily deformed after welding, and its durability and appearance cannot meet the requirements. It is very difficult to replace and maintain later

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