Cast-in-place pile construction method for underground engineering structure
A technology of underground engineering and construction methods, which is applied in the direction of foundation structure engineering, sheet pile walls, buildings, etc., can solve problems affecting the quality of cast-in-situ piles, affecting the smooth progress of projects, engineering accidents and risks, etc., and achieve good control of risks, Guarantee the effect of stability and great applicability
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[0023] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments to facilitate a clear understanding of the present invention, but they do not limit the present invention.
[0024] As shown in the figure, the present invention provides a construction method for cast-in-place piles for underground engineering structures, comprising the following steps:
[0025] 1. Within the construction scope of the cast-in-place pile 8, excavate the soil 3 above the roof 4 of the existing structure on a slope; after excavation, the soil 3 above the roof 4 of the existing structure forms an hourglass-shaped pit body, and the exposed existing structure The area of the top plate 4 is larger than the section of the steel casing 6, so that the steel casing 6 can enter the existing structure top plate 4;
[0026] 2. Within the construction scope of the steel casing 6, it is ensured that the steel casing 6 can pass throug...
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