Uneven settlement reinforcing leveling repairing method for existing building floors

Abstract

The invention discloses an uneven settlement reinforcing leveling repairing method for existing building floors, and belongs to the technical field of civil engineering construction. The uneven settlement reinforcing leveling repairing method for the existing building floors comprises the following steps that grouting is carried out to form a composite foundation reinforcing platform, specifically, grouting is carried out at the bottom of the floor to form the composite foundation reinforcing platform so as to raise and level the floor; grouting is carried out to form a plurality of composite pile foundations, specifically, grouting is carried out at the bottom of the composite foundation reinforcing platform to form the composite pile foundations so as to support the composite foundation reinforcing platform and the upper load. The uneven settlement reinforcing leveling repairing method for the existing building floors has the characteristics of capability of improving foundation bearing capacity and improving overall foundation stability and durability, lifting and leveling repairing, no interference, economy and short construction period.

Description

technical field [0001] The invention relates to the technical field of reinforcement and leveling of building floors, in particular to a method for reinforcing, leveling and repairing uneven settlement of existing building floors. Background technique [0002] With the rapid development of modern industry, there is a strong demand for industrial buildings, which has led to an increasing number of large-scale industrial plants in China. In order to put industrial plants into production as soon as possible, the construction period of industrial plants is gradually shortened. Therefore, in the construction process, foundation treatment has become an important In the construction process, especially in areas with special soil layers such as coastal areas and northwest hilly areas, foundation treatment is even more important. For example, large power plants, logistics warehousing, and industrial production workshops have high requirements for building floors. They need to meet th...

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Problems solved by technology

[0006] For example, the technical defects of injecting expansive polyurethane mixture: the permeability of expansive polyurethane mixture to the foundation soil layer is weak, the penetration is uneven, and hollowing is easy to form; the strength of expansive polyurethane mixture is low after curing; the expansive polyurethane mixture starts to expand after 20 seconds of injection , the expansion amount is 1.5-20 times of the original volume, so the difference between the expansion amount and the original volume is large, it is not easy to control, and the floor is easy to bulge after expansion; due to the uneven penetration of the slurry, the overall stability is poor

[0007] Another example is to get rid of the technical defects of new flooring: this method only treats the symptoms but not the root cause. After the new floor is clean and level in a short period of time, but the foundation soil layer is not reinforced, there are still disadvantages of uneven settlement; the new floor needs to stop production, which affects The normal operation of the factory causes economic losses; the finished products in the factory are not effectively protected, and it is easy to cause damage to the equipment and goods in the factory to varying degrees; the cost is high and the construction period is long

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