One-reinforced concrete pile and two-plain concrete pile combined type pile-forming method for occlusive pile of deep loose rockfill layer

Abstract

The invention relates to the technical field of occlusive pile construction and discloses a one-reinforced concrete pile and two-plain concrete pile combined type pile-forming method for an occlusivepile of a deep loose rockfill layer. The method comprises the following steps that (1) the occlusive pile structure is divided into a plurality of construction combinations, and each construction combination comprises a non-reinforcement plain concrete pile, a reinforced concrete pile occluded with the non-reinforcement plain concrete pile and another non-reinforcement plain concrete pile occludedwith the reinforced concrete pile; (2) an occlusive pile guide wall is manufactured; (3) the reinforced concrete pile in the construction combination and the two reinforced concrete piles meshed withthe two sides of the construction combination are subjected to hole forming and backfilling; (4) rotary excavating and hole forming are carried out on the construction combination; (5) a reinforcement cage which is constructed and combined is manufactured, a guide pipe is lowered, and a pile is formed through pouring; (6) repeating the steps (3)-(5), to complete the construction of the next construction combination; (7) rotary excavating pile-forming operation is carried out on the reinforced concrete pile between the two construction combinations; and (8) the steps (6)-(7) are cycled, to complete all construction combination construction.

Description

technical field [0001] The invention relates to the technical field of occlusal pile construction, in particular to a combined pile-forming method of occlusal piles in deep loose rock-fill layers. Background technique [0002] The occlusal pile is a foundation pit enclosure structure in which the piles are interlocked and arranged. The piles are arranged in a continuous interval between an unreinforced plain concrete pile (A pile) and a reinforced concrete pile (B pile). Arrangement, the diameters of piles A and pile B can be the same, or a special-shaped layout in which the diameter of pile B is larger than that of pile A can also be used. Usually, during the construction of occlusal piles, the A pile is generally constructed first, and then the B pile is embedded and occluded between the two A piles to form a support structure with good overall waterproof and soil retaining performance. It is widely used in pit support. [0003] There are usually three technological meth...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a deep loose rock-fill layer occlusal pile-meat-two-vegetable combined pile-forming method, aiming at solving the problem of piling construction efficiency caused by deep loose rock-fill layers in the construction process of foundation pit support occlusal piles Low quality, difficult to guarantee occlusal quality, and high overall cost

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