Construction method of bored pile in sand seam geology, application of chemical sludge dado to same, and pile foundation

Abstract

The invention discloses a construction method of a bored pile in sand seam geology, application of chemical sludge dado to the same, and a pile foundation, and relates to the technical filed of building operations so that the problems that collapsing holes, broken drill points or drill stems are likely to happen in the existing bored pile in sand seam geology construction process can be improved. The construction method of the bored pile in sand seam geology can guarantee that the chemical sludge dado has fine effect protective shelter, prevent the collapsing holes, effectively cool drill bits and lubricate drilling tools, and reduce the problems of broken drill points or drill stems so that it is guaranteed that drilling work can go on smoothly. The application of the chemical sludge dado in the construction method of the bored pile in sand seam geology are also provided, so that construction progresses and construction quality are effectively ensured, construction risks are reduced, economic benefits and social benefits are significantly increased, and accordingly the chemical sludge dado is suitable for popularization and application. A pile foundation obtained through the method is also provided. The integrity of the foundation pile is tested by ultrasonic testing, which shows that the foundation pile is I-grade pile and has good construction quality.

Description

technical field [0001] The invention relates to the technical field of building construction, in particular to a construction method of sand layer geological bored piles, application of chemical mud retaining walls therein and pile foundations. Background technique [0002] With the continuous development of pile machinery for hole-forming operations, bored piles are widely used in foundation infrastructure projects such as high-rise buildings, highway bridges or large structures. Bored pile refers to a pile made by mechanically drilling a pile hole in the foundation soil at the project site, and pouring concrete into it (or first hanging a steel cage in the hole and then pouring concrete). Drilling methods include mud wall drilling and dry drilling. The construction process of the bored pile with mud wall protection includes measuring the pile position, laying the casing, preparing mud, forming holes, clearing holes, lowering the reinforcement cage and pouring concrete. ...

AI Technical Summary

Problems solved by technology

[0005] The first object of the present invention is to provide a construction method for bored piles in sand layer geology, so as to improve the existing technology of hole collapse, drill tip or drill rod breakage in the construction process of sand layer geological bored piles question