Old pile lower pile splicing structure and construction method thereof

Abstract

The invention relates to an old pile lower pile splicing structure. The old pile lower pile splicing structure comprises a bearing platform and old piles, wherein the old piles are arranged under the bearing platform, lower pile holes are formed in the bottoms of the old piles, the cross section of each lower pile hole is in a circular shape, a symmetrical fan shape or an oval shape, and the cross section contour of each lower pile hole is larger than the minimum envelope contour of the outer edge of the corresponding old pile; lower piles are arranged in the lower pile holes, the lower piles correspond to 2-4 old piles under the same bearing platform, and the lower piles are overlapped with the old piles; and upper pile holes are formed in one sides of the old piles in parallel, the cross section contour of each upper pile hole is smaller than the cross section contour of the corresponding lower pile hole, upper piles are arranged in the upper pile holes, the upper piles are overlapped with the lower piles, and the bearing platform, the lower piles, the upper piles and the old piles are poured into a whole. The invention further relates to an old pile lower pile splicing construction method. According to the old pile lower pile splicing structure and the construction method thereof, the upper piles are implanted beside the old piles, the lower piles are implanted below the old piles, so that the upper piles, the lower piles and the old piles are poured into a whole, the cooperative bearing capacity of a new structure and an old structure can be improved, and the old pile lower pile splicing structure and the construction method thereof can well serve the construction of old city reconstruction and building reconstruction and expansion.

Description

technical field [0001] The invention relates to the technical field of utilizing old building piles, in particular to a structure for connecting piles under old piles and a construction method thereof. Background technique [0002] The vigorous development of my country's urbanization has given birth to the transformation of old cities and the reconstruction and expansion of buildings. Old city reconstruction and building reconstruction and expansion usually involve the demolition of old buildings and reconstruction of high-rise buildings. For soft soil areas or poor soil areas, old buildings mostly use pile foundations. When new buildings in this area use pile foundations, the construction of new pile foundations will be affected by the pile foundations of old buildings. [0003] The common way to eliminate the impact of old pile foundations is to remove caps and pull out old foundation piles. After the old pile foundations are pulled out, new piles are constructed. Howev...

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Problems solved by technology

[0006] In order to solve the problem that the construction of old piles is difficult to pull out and easily affect the bearing capacity of the foundation, the present invention provides a structure for connecting piles under old piles and a construction method thereof. By splicing and combining old piles and new piles, the use of old pile foundations is extended. life, making it suitable for new construction

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