Centering device and method for reinforced cage of bored pile

Abstract

A reinforcement cage centering device for bored piles, comprising two sets of guard piles arranged on the ground around the pile hole and a centering plate arranged on the reinforcement cage, the single set of guard piles includes two guard piles, the same The connection line between the two protective piles in the group passes through the center of the pile hole. The first pair of centering ropes are arranged on the two groups of protective piles. The first pair of centering ropes bypass the protective piles and are arranged in a cross shape. A downward-facing laser transmitter is bound; a centering plate is set at the center of the inner circle in the steel cage, and the center of the centering plate is printed with a centering qualified area. The above-mentioned device can effectively solve the safety hazards of the hand-held pendant hammer, and saves the installation of the pedal. It is suitable for construction conditions with dark light, and the structure of "ring plate + movable rod" can be further improved. The centering accuracy provides favorable prerequisites for subsequent pile foundation construction.

Description

technical field [0001] The invention relates to the field of bored pile construction, in particular to a centering device and a centering method for a reinforced cage of a bored pile. Background technique [0002] In the construction of bridges, the pile foundation is used as the foundation structure, and its construction quality has always been the focus of engineering attention. In order to ensure the centering of the reinforcement cage of the pile foundation, four protective pile traction wire ropes are often used in engineering to mark the center of the drilling hole at the cross point, and at the same time, the four main bars perpendicular to each other on the top of the reinforcement cage are bound to mark the center of the reinforcement cage, and finally pass the check Control the alignment between the center of the guard pile and the center of the reinforcement cage. During on-site construction, workers often use the method of holding a hanging hammer to check the c...

AI Technical Summary

Problems solved by technology

However, this method still has certain defects. When drilling a large-aperture hole, the distance between the center of the hole and the wall of the hole is relatively long, and it is time-consuming and labor-intensive to set up a pedal protection. Under some conditions, there is a risk of accidental fall when the hand-held pendant is centered; night construction Insufficient light in the hole affects the alignment accuracy, and hand-held lighting takes up construction resources; when the wire rope is tied, the wire rope is not stretched straight, which causes the center to shift during alignment, which affects the alignment accuracy

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