Post-cast strip of basement floor

Abstract

The invention provides a post-cast strip of a basement floor and relates to the technical field of building construction. The post-cast strip of the basement floor comprises a concrete cushion, a first waterproof roll layer, a fine aggregate concrete layer and a base plate, wherein the concrete cushion, the first waterproof roll layer, the fine aggregate concrete layer and the base plate are located on the two sides of a post-cast strip area and arranged in sequence from bottom to top. A groove is formed in the portion, below the post-cast strip area, of the concrete cushion. A second waterproof roll layer is arranged between the concrete cushion and the first waterproof roll layer. The second waterproof roll layer is arranged in the groove and extends towards the two sides of the groove. Upper arches are arranged in the middle of the first waterproof roll layer and the middle of the second waterproof roll layer. Gaps are formed between the upper arches and the concrete cushion. A first yellow sand layer is arranged on the portion, located in the groove, of the first waterproof roll layer. A second yellow sand layer is arranged on the first yellow sand layer. According to the post-cast strip of the basement floor, the two middle waterproof layers and the two middle arches are adopted, the effect that the waterproof requirement is met is guaranteed through the two waterproof layers, and the gaps are reserved through the arches so that movement clearances can be reserved for rolls. Landfilling is conducted through yellow sand by two times, the waste removal work is low, and the structural safety and waterproof performance of the post-cast strip are not affected.

Description

technical field [0001] The invention relates to the technical field of building construction. Background technique [0002] At present, the construction method of post-pouring belt on the bottom slab is commonly used in engineering construction-the post-pouring belt with advanced water stop on the bottom slab. In engineering practice, it is found that there are some problems in this construction method: [0003] (1) The caulking material in the advanced waterstop is unstable, and it is difficult to achieve effective positioning during installation, and the final required caulking effect cannot be achieved. [0004] (2) The rubber waterstop can meet the position requirements when it is initially placed, but when the post-cast concrete is poured, it is likely that the force on both sides will be uneven, resulting in deviation to one side, and the waterstop effect will be greatly reduced. [0005] (3) The post-pouring belt of the bottom plate is located in a low-lying positio...

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Problems solved by technology

[0003] (1) The caulking material in the advanced waterstop is not stable, it is difficult to achieve effective positioning during installation, and the final required caulking effect cannot be achieved

[0004] (2) The rubber waterstop can meet the position requirements when it is placed initially, but when the post-cast concrete is poured, it is likely that the force on both sides will be uneven, resulting in deviation to one side, and the waterstop effect will be greatly reduced

[0005] (3) The post-pouring belt of the bottom plate is located in a low-lying position, relatively low in the building, and the waiting time for construction is long, and it is very easy to collect stagnant water, silt, garbage, etc., resulting in a large, difficult and expensive cleaning workload

Although some construction plans consider sewage discharge, etc., but the quality awareness of the managers is weak, and they are unwilling to spend the cost to deal with sundries, and the actual situation on site has little effect

[0006] In addition to the above problems, there are still some construction problems: (1) The post-casting belt of the base plate is often difficult to clean and perfect due to poor working conditions, and the quality of the post-casting belt concrete is difficult to guarantee

As a result, the concrete sections of the basement beams and bottom slabs are damaged, and the lower reinforcement loses concrete protection, making the post-poured belt a structural weak zone.

(2) When cleaning the post-casting of the bottom plate, the cleaning operations such as chiseling and slag removal are carried out in dense beams and slab steel bars. The working conditions are very difficult, and a little carelessness will break the waterproof protective layer at the bottom of the slab and damage the waterproofing of the lower part. Floor

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