Foundation pile vertical uplift detecting connector

Abstract

The invention discloses a foundation pile vertical uplift detecting connector which comprises a counter-force beam, a jack, a support plate, a pull rod and a cylinder. The counter-force beam is rested right above a foundation pile. The jack is located on the counter-force beam. The support plate is disposed on the jack. The cylinder is fixedly connected with the main reinforcement cage of the foundation pile. Two ends of the pull rod are respectively fixedly connected with the support plate and the cylinder. The foundation pile vertical uplift detecting connector has the advantages that the jack and the support plate are disposed on the counter-force beam, the cylinder is connected with the main reinforcement cage of the foundation pile, traditional point contact is replaced by surface contact, stress strength is increased, the cylinder is in even connection with the main reinforcement cage to allow main reinforcement bars to be parallel and even in stress, and safety, reliability and high operability during an uplift process are achieved.

Description

[0001] technical field [0002] The invention relates to the technical field of pile detection, in particular to a vertical pullout detection connector for foundation piles. Background technique [0003] Single pile vertical pull-out static load test detection is a method of test detection for piles in the project to determine the vertical pull-out ultimate bearing capacity of single pile; determine whether the vertical pull-out bearing capacity meets the design requirements; pass the pile Body internal force and deformation test to measure the pullout friction resistance of the pile. [0004] The traditional detection method is to weld the main reinforcement of the long pile reinforcement cage and then wrap it symmetrically on the reaction beam. It cannot guarantee that the main reinforcement of the pile will not be vertical when stretched, resulting in uneven tension. The welding operability is not strong. When lapping the reaction beam The edge of the steel bar and the r...

AI Technical Summary

Problems solved by technology

[0004] The traditional detection method is to weld the main reinforcement of the long pile reinforcement cage and then wrap it symmetrically on the reaction beam. It cannot guarantee that the main reinforcement of the pile will not be vertical when stretched, resulting in uneven tension. The welding operability is not strong. When lapping the reaction beam The edge of the steel bar and the reaction beam is in point contact. When it is stressed, it is easy to be cut, which has potential safety hazards. The reasons are as follows: ⑴The steel bar is lapped on the reaction beam, and the overlapping section is in contact with the reaction beam in a certain arc shape, that is There is a point contact method at the two edges of the reaction beam. This contact method has disadvantages. This point is prone to cutting during the tensile process.

(2) After the main reinforcement of the reinforcement cage is lapped on the reaction beam, it is under tension in an inverted triangle shape. The concrete in the middle of the reinforcement cage on the top of the pile is under compression, and the main reinforcement is not free and vertical.

Images