Novel foundation strengthening method and structure

Abstract

The invention relates to a novel foundation strengthening method and structure, and belongs to the technical field of building strengthening. The foundation strengthening method includes the steps that a surrounding sleeve is formed on the periphery of an original foundation through pouring, outer corners on the periphery of the original foundation are connected with the surrounding sleeve with the embedded steel bar technology, and the original foundation is accordingly strengthened. The foundation strengthening structure comprises the original foundation and the surrounding sleeve, and a plurality of embedded steel bars are distributed at the contact positions of the outer corners of the original foundation and the surrounding sleeve to serve as connecting pieces between the original foundation and the surrounding sleeve; a sixth reinforcing steel bar is additionally arranged to provide balance force S, and the space effect of the surrounding sleeve is sufficiently achieved; meanwhile, the sixth reinforcing steel bar right serves as a supporting point to achieve the anti-bending effect of a third reinforcing steel bar in the surrounding sleeve due to the existence of the sixth reinforcing steel bar. Reliable strengthening between the original foundation and the surrounding sleeve is fundamentally achieved, technical measures are simple and ingenious, the effect is remarkable, the leveraging effect is achieved, electrowelding operation in a traditional strengthening scheme in the field can be eliminated, a first reinforcing steel bar is not used, and therefore the construction working loads are greatly reduced.

Description

technical field [0001] The invention relates to the technical field of building reinforcement, is applied to an independent foundation under a reinforced concrete column to increase the bottom area, and in particular relates to a method for realizing enclosure reinforcement and its structure. Background technique [0002] The independent foundation under the reinforced concrete column adopts the enclosure reinforcement method when the bottom area increases, that is, the enclosure structure is added outside the foundation to make the bottom foundation larger. [0003] like figure 1 , figure 2 As shown, in order to strengthen the interaction between the original foundation and the external enclosure, the conventional method needs to lengthen the steel bars 71 in the original foundation 7 at the bottom by welding before pouring the concrete enclosure to obtain the first steel bars 1 . For this reason, workers need to drill holes from outside to inside at the bottom of the en...

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Problems solved by technology

[0006] 2) Consider adding a third steel bar 3, which is arranged radially and is located at the lower layer of the concrete body enclosure thickness: it can resist bending, but the maximum bending moment is at the side of the column, and the structural reinforcement φ12200 is too small to be effective, so only Can enhance the integrity of the enclosure

[0009] The above adopts the electric welding connection between the extended first steel bar 1 and the original foundation internal steel bar 71, and various improvement measures are added at the same time, and the construction workload is huge (especially the first steel bar 1 is welded around the bottom of the foundation). The program has many limitations and needs to be improved

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