A bored cast-in-place pile and its construction method

Abstract

The invention relates to a bored cast-in-place pile and a construction method thereof, comprising: a steel reinforcement cage, which is arranged in a pile hole, and the reinforcement cage is annular, so that a cavity is formed in the reinforcement cage; a water pipe frame, It is arranged in the cavity, the water pipe rack includes at least one water inlet hollow pipe and at least one water outlet hollow pipe communicated with the water inlet hollow pipe, the water inlet hollow pipe and the water outlet hollow pipe are all along the extending in the axial direction of the reinforcement cage; and a pile body, which is formed on the reinforcement cage and the water pipe frame by pouring concrete. The present invention relates to a bored cast-in-place pile and its construction method. Since a water pipe frame is arranged in the cavity of the steel cage, and the water pipe frame has a water inlet hollow pipe and a water outlet hollow pipe, in the process of pouring to form the pile body, The temperature effect of the pile forming process can be adjusted through the water inlet hollow pipe and the water outlet hollow pipe, so as to ensure the pile forming quality.

Description

technical field [0001] The invention relates to the field of bridge pile foundation construction and civil engineering, in particular to a bored cast-in-place pile and a construction method thereof. Background technique [0002] Bored cast-in-place piles refer to piles formed in the foundation soil by means of mechanical drilling, steel pipe excavation or manual excavation at the bridge construction site, and then placing steel cages and pouring concrete in them. Bored piles are widely used in conventional bridge construction because of their convenient construction, low economic cost, good durability and reliability. [0003] In the related art, with the increase of bridge span, the diameter of bored piles is also increasing, and there are more and more large diameter (for example, >5m) bored piles. A large amount of hydration heat is generated, which leads to problems such as difficulty in controlling the quality of mass concrete. [0004] Therefore, it is necessary t...

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Problems solved by technology

[0005] The embodiment of the present invention provides a bored cast-in-situ pile and its construction method to solve the problem in the related art that a large amount of heat of hydration is generated during the concrete pouring process and the quality of large-volume concrete is difficult to control

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