Building foundation treatment pile construction process

Abstract

The invention discloses a building foundation treatment pile construction process. The building foundation treatment pile construction process is characterized by comprising the advantages of flexiblecombination between precast piles and cast-in-place piles, wide application range, high bearing capacity of single piles and reduction of the scene concrete casting quantity by the precast piles at the lower part; and the diameters of the precast piles are smaller than the diameters of the cast-in-place piles, so that the stress mechanisms of the piles are met, the concrete consumption is saved,the construction speed is greatly accelerated, the production cost is reduced, and the problem of incapability of driving long cast-in-place piles due to the height limiting of a pile receiver is solved through use of the precast piles at the lower parts.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction technique for treating building foundations into piles. Background technique [0002] my country's high-rise building foundation construction and foundation treatment technology is close to the international advanced level. Pile foundation is currently the most widely used foundation form. Due to vibration, noise pollution, soil squeezing effect and other defects, the use of concrete prefabricated piles is relatively reduced. The fastest growing and most widely applicable is the cast-in-place pile, because it can be applied to any stratum soil quality, and can form any pile diameter and pile length to meet different bearing capacity requirements. [0003] In recent years, cast-in-situ piles have been widely used in our country, and a lot of experience in design and construction has been accumulated, and the construction technology of cast-in-situ pile...

AI Technical Summary

Problems solved by technology

At present, there are many patented techniques for reinforcing the pile end with filler to form an enlarged pile head, especially the patented construction method of concrete piles, all of which need to be filled in to ensure the compactness of the filler such as the three-strike penetration and the compactness of the underlying soil. A large amount of filler including construction waste, in order to prevent the pile from penetrating damage due to excessive settlement, it is also necessary to fill in a large amount of dry hard concrete, so the pile construction time is long, the construction is difficult, and the work efficiency is low

Moreover, it is not suitable to fill too much filler in this soil layer, otherwise the ground will rise and the adjacent piles will float up. The underlying soil is not well compacted, so the amount of concrete is very large. If the length of the prefabricated pile is increased to increase the bearing capacity of the single pile, the friction of the ground will generate greater resistance, making it difficult to sink the pile and consume a lot of energy. Sometimes there will be burst piles, and the shear strength of prefabricated pipe columns is not as good as that of solid piles