Construction method of oblique bottom plate in the connecting section with variable height difference in basement

Abstract

The invention relates to a construction method of a basement variable height difference joint section inclined bottom plate. The construction method mainly comprises the construction steps including the first step of embedded part installing, the second step of inclined plate cavity waterproof layer construction, the third step of cavity refilling, the fourth step of steel formwork manufacturing, the fifth step of steel formwork fixing, the sixth step of upper bottom plate, lower bottom plate and inclined plate longitudinal rib fixing and the seventh step of concrete pouring. The construction method has the beneficial effects that operation is easy, and connecting strength between components is large, and good economic and technical benefits are achieved.

Description

technical field [0001] The construction method of the oblique bottom plate of the height difference joint section of the present invention particularly relates to the construction method of the inclined bottom plate of the variable height difference joint section of the basement. technical background [0002] Underground garages of high-rise buildings with podiums often have an additional floor due to building function requirements, which causes a local level difference in the floor, and it is necessary to set up inclined plates to connect the upper and lower floors. According to the existing engineering experience, structural joints often appear when the section of the basement floor is suddenly thick or in some weak links, especially in places where the stress concentration and negative bending moment are large; when the soil layer below the basement floor appears When the settlement is uneven, the force on the floor will be uneven, and some parts of the floor will be subj...

AI Technical Summary

Problems solved by technology

According to the existing engineering experience, structural joints often appear when the section of the basement floor is suddenly thick or in some weak links, especially in places where the stress concentration and negative bending moment are large; when the soil layer below the basement floor appears When the settlement is uneven, the force on the bottom plate will be uneven, and some parts of the bottom plate will be subjected to tensile stress, which will lead to the appearance of settlement cracks and poor waterproof conditions.

[0003] In general, the structural design requires that the inclined floor should be constructed on the base soil layer after the pit bottom reinforcement treatment in the support structure; the enclosure design is to ensure that the support belt of the floor can form a strong force transmission effect when the support structure is removed , to prevent kicking damage to the enclosure structure, it is necessary to construct the lower floor to the edge of the enclosure piles of the support structure, resulting in the lack of bearing soil layer below the inclined floor, which makes the construction conditions and structural design conditions differ greatly, resulting in formwork Difficulty and formwork rigidity cannot be guaranteed

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