Design and construction method of reinforced cage structure of bored pile

Abstract

The invention provides a cast-in-situ bored pile reinforcement cage, comprising main reinforcements, stirrups, an upper hoop ring, a lower hoop ring, a hydraulic push rod and sector-ring-shaped steelplates, main reinforcement lantern rings are arranged on the outer sides of the upper hoop ring and the lower hoop ring respectively, and the upper hoop ring and the lower hoop ring are both fixed tothe inner side of the bottom of the cast-in-situ bored pile reinforcement cage; at least one sector-ring-shaped steel plate is hinged to the inner side of the lower hoop ring; the two ends of the hydraulic push rod are hinged to the upper hoop ring and the sector-ring-shaped steel plates respectively. The cast-in-situ bored pile reinforcement cage is further provided with a hydraulic pipe, and oneend of the hydraulic pipe is connected with the hydraulic push rod. By the adoption of the cast-in-situ bored pile reinforcement cage, engineering accidents caused by insufficient pile end bearing capacity can be reduced or eradicated. The invention further provides a cast-in-situ bored pile reinforcement cage manufacturing method and a construction method by adopting the cast-in-situ bored pilereinforcement cage.

Description

technical field [0001] The invention belongs to the technical field of geotechnical engineering pile foundations, and in particular relates to a technology for reinforcing and treating sediment at the bottom of large-diameter bored cast-in-place piles. Background technique [0002] Bored piles use different drilling methods to form a pile hole with a certain diameter in the soil. After reaching the design elevation, the steel cage is lifted into the pile hole and the pile foundation is formed by pouring concrete. According to different hole-forming methods, cast-in-situ piles can be divided into several categories such as immersed tube cast-in-place piles, bored cast-in-place piles, and hole-dug cast-in-situ piles. According to the nature of the foundation soil, generally, dry operation to form holes, mud retaining wall to form holes, etc. can be used. The bored pile with mud retaining wall is drilled slowly under the condition of mud retaining wall by the pile driver, and ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a reinforced cage for bored piles and its production and construction methods, which can solve the problem of low bearing capacity of the pile body and poor performance of pile end resistance in the prior art due to unclean pile tip sediment cleaning. Technical problems of engineering accidents such as ideal and large pile foundation settlement

Images