Annular connecting device for connecting of all-casing drilling occlusive piles and structural bottom plate steel bars

Abstract

The invention discloses an annular connecting device for connecting of all-casing drilling occlusive piles and structural bottom plate steel bars. The annular connecting device comprises an annular shell internally provided with an annular cavity, a plurality of butting holes distributed circumferentially are formed in the annular shell in the mode of penetrating through the annular cavity, double layers of first inserting grooves located between any two adjacent butting holes are formed in the inner wall of the inner circle of the annular shell in a penetrating mode, the annular connecting device further comprises a cylinder shell located at the center of the annular shell and provided with an upwards opening, second inserting grooves corresponding to the first inserting grooves one to one are formed in the inner wall of the side face of the cylinder shell in a penetrating mode, and double layers of fixing rods distributed in the front-back direction are fixedly connected between the end face of the side face of the cylinder shell and the side face of the inner wall of the annular shell, wherein the end face of the side face of the cylinder shell is located between every two adjacent second inserting grooves, and the side face of the inner wall of the annular shell is located between every two adjacent first inserting grooves; and the fixing rods are fixedly connected with stabilizing loops surrounding the cylinder shell, and a stabilizing ring is arranged on the stabilizing loop between every two adjacent fixing rods.

Description

technical field [0001] The invention relates to the technical field of underground construction facilities, in particular to an annular connection device for connecting a full-sleeve bored occlusal pile with a structural bottom plate steel bar. Background technique [0002] Bored occlusal pile refers to the reinforced concrete "pile wall" formed by the interlocking of adjacent piles in the row of piles arranged in the plane (the piles are embedded in the circumference). It is used as the deep foundation pit support structure of the structure and plays a good role Waterproof effect. The bored occlusal pile was discovered by Professor Wang Zhenxin, a well-known expert in my country's underground engineering field, during his investigation abroad, and introduced it to China and recommended it to the Shenzhen Metro Project. At present, through a large number of engineering practices, bored occlusal piles have become a very mature construction technology for supporting structure...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a ring-shaped connecting device for the connection between the full casing bored occlusal pile and the steel reinforcement of the structural floor, which fundamentally solves the problem of the rough connection between the existing drilled occlusal pile and the structural steel reinforcement and the narrow space at the joint It has the advantages of simple structure, convenient operation, body shape matching, automatic connection and stable connection, etc.

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