Integrated construction method for artificial dug pile and steel pipe concrete column

Abstract

The invention discloses an integrated construction method for an artificial dug pile and a steel pipe concrete column. According to the method, a steel casing for avoiding quicksand in construction of the artificial dug pile is directly used for construction of the steel pipe concrete column of the upper structure; a mode of digging soil and sinking a steel pipe at the same time is adopted; in the process of sinking the steel pipe, after the previous section of steel pipe completely enters the soil layer, the second section of steel pipe is sleeved, and the operation is stopped after the design depth is dug; and the steel pipe sections are spirally connected by adopting male and female ports and fixed with the internal concrete through pins. A flange serving as a guard plate is welded at the contact position of a steel cylinder and a bottom plate, so that the contact area of the steel cylinder and the bottom plate is enlarged. By the method, the construction period can be shortened, the consumption of steel is reduced, the stability and the integrity of the structure are improved, the construction efficiency is improved, and the engineering cost is reduced.

Description

technical field [0001] The invention relates to a construction technology in the technical field of underground construction engineering, in particular to a construction method for integrating artificial hole-digging piles and steel pipe columns. Background technique [0002] Manually dug piles refer to reinforced concrete piles that are manually excavated and poured and tamped on site. The manual excavation piles are generally larger in diameter, and the smallest is more than 800mm, which can bear the structural main body with high base pressure. Manual hole-digging piles are widely used because of their simple construction technology, convenient and quick construction, no need for large-scale mechanical equipment, simultaneous construction of multiple piles, and saving equipment investment. Moreover, the manual hole-digging pile has a high bearing capacity of a single pile, and can directly check the shape and size of the pile and the condition of the bearing layer. It h...

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Problems solved by technology

[0005] The purpose of the present invention is to address the above defects, to provide a construction method for the integration of manual digging piles and steel pipe columns, to overcome the problem of separation and disconnection between the construction of manual digging piles and the construction of steel pipe columns in the above background technology, and to reduce material waste , reduce engineering costs, and ensure the integrity and stability of the upper and lower structures at the pile position

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