Construction method for basement floor post-cast strip waterproofing structure

A basement floor and construction method technology, applied to underwater structures, infrastructure engineering, water conservancy projects, etc., can solve problems affecting the construction quality of basement structures, affecting normal use functions, post-pouring belt leakage, etc., to facilitate construction Operation and quality control, simple structure, cost-saving effect

Active Publication Date: 2015-03-11
CHINA MCC17 GRP
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AI Technical Summary

Problems solved by technology

[0002] In the construction of large-scale basement structures, it is necessary to set up post-casting belts to solve the problems of poor settlement and reduce shrinkage stress. The structural design and construction technology of post-casting belts will affect the construction quality of the entire basement structure, and even affect the normal use function
At present...

Method used

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  • Construction method for basement floor post-cast strip waterproofing structure

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Embodiment Construction

[0017] The construction steps of the post-cast waterproof structure of the basement floor provided by the present invention are as follows:

[0018] 1. After the construction of the foundation cushion 6 is completed, the drainage main pipe 5 and the drainage branch pipe 7 are buried in the filter tank to the bottom sump. The upper part of the drainage main pipe 5 is provided with a φ8-10mm drainage hole. The lower part of the post-pouring belt is covered with graded gravel to form a gravel filter layer 4, and the gradation of the gravel should be 10-31.5; finally, a layer 1.5m wide and 1.5m thick is laid on the gravel filter layer along the direction of the post-casting zone 2 0.5mm plastic film isolation layer9.

[0019] 2. Before the reinforcement of the base plate is bound, place mortar stoppers 8 at the lower part of the post-pouring belts on both sides, and place the lower steel bars of the bottom reinforcement mesh in the grooves of the mortar stoppers 8 to prevent the c...

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Abstract

The invention discloses a construction method for a basement floor post-cast strip waterproofing structure and belongs to the technical field of waterproofing of buildings. The construction method comprises the following steps: laying a main drain pipe and a branch drain pipe in a water filtering tank to a floor sump, fully laying graded broken stone in the water filtering tank to form a broken stone water filtering layer, arranging mortar stop blocks on two sides at the lower part of a post-cast strip, and mounting floor reinforcing bars; mounting mortar stop blocks on two sides at the upper part of the post-cast strip after mounting a post-cast strip side form; and pouring post-cast strip concrete after pouring floor concrete on two sides of the post-cast strip, and curing concrete under a strip-film heat and moisture preservation condition for not less than 14 days. The construction method provided by the invention can reduce water pressure of a basement floor, realizes the waterproofing function of the basement floor post-cast strip and guarantees the pouring quality of concrete.

Description

technical field [0001] The invention belongs to the technical field of building waterproofing, and in particular relates to a construction method for a post-cast waterproof structure of a basement bottom plate. Background technique [0002] In the construction of large-scale basement structures, it is necessary to set up post-casting belts to solve the problems of poor settlement and reduce shrinkage stress. The structural design and construction technology of post-casting belts will affect the construction quality of the entire basement structure, and even affect the normal use function. At present, the waterproof construction of the basement bottom slab post-casting belt mainly adopts the construction method of plugging, and the structural measures of pre-embedding steel plate waterstops in the bottom slab and setting a waterproof layer at the bottom of the slab, but there are still different degrees of seepage in the basement bottom slab post-casting belt. leakage situati...

Claims

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Application Information

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IPC IPC(8): E02D29/16E02D29/045E02D31/02
CPCE02D29/045E02D29/16E02D31/02
Inventor 江国栋
Owner CHINA MCC17 GRP
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