Method for moulding female end of heavy caliber socket reinforced concrete pipe

Abstract

The invention relates to a concrete pipe joint die, in particular to a method for moulding a female end of a heavy caliber socket reinforced concrete pipe. The method comprises the following steps of: placing a bottom die on the ground and leveling, and coaxially arranging a positioning support; sleeving a steel ring of the female end in a lower die, and connecting the lower die with the steel sleeve ring; hoisting the lower die and the steel ring onto the bottom die, and cancelling the connection between the lower die and the steel sleeve ring; coaxially connecting the lower die and the bottom die, and sleeving the steel sleeve ring on the positioning support; adjusting a screw on the lower die to adjust the circular degree of the steel sleeve ring; arranging a middle die on a flange; arranging an upper die on the middle die; and arranging an inner die and pouring a concrete structure. The method has the advantages that: the shape of the bottom of the steel sleeve ring at the female end is restrained by the cylinder on the positioning support, and the shape of the end part of the steel sleeve ring at the female end is regulated by rotating the screw in a positioning hole to ensure the moulding accuracy of the steel sleeve ring.

Description

technical field [0001] The invention relates to a concrete pipe joint mold, in particular to a forming method for the socket end of a large-diameter socket-type reinforced concrete pipe. Background technique [0002] Concrete pipes are widely used in jacking construction, and are generally used in areas where it is difficult to slot, have high requirements for the construction environment, and cannot cause ground subsidence under specific geographical conditions, such as railways, highways, etc. Underground construction under objects. At present, the main structure of reinforced concrete pipes used in jacking method construction is: a steel cage is embedded in the concrete pipe wall, and the steel cage is assembled by two coaxial cylindrical steel skeletons through erecting steel bars. One end of the wall is fixed with a steel collar as a socket, and the other end of the concrete pipe wall is grooved outside as a socket, and the connection between the two concrete pipes is ...

AI Technical Summary

Problems solved by technology

Since the socket end needs to be equipped with a steel collar, and when the roundness and precision of the steel collar meet the requirements after expansion, due to the large diameter and relatively thin thickness, deformation will inevitably occur during the hoisting process, resulting in Its roundness is reduced and errors occur, which in turn affects the precision after molding

At present, the existing molds cannot effectively correct the roundness of the steel collar before pouring, and cannot meet the accuracy requirements of large-diameter reinforced concrete pipes, and the larger the diameter, the greater the absolute error. Therefore, in the manufacturing process of large-diameter socket-type reinforced concrete pipes There is a need for a mold that can correct the roundness of steel collars

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