A swivel spherical joint at the top of a pier with the function of preventing falling beams and its swivel method

Abstract

A swivel ball joint at the top of a pier with the function of anti-fall beams, including an upper ball joint connected with the beam body, a lower ball joint connected with the pier abutment, a pin shaft and a permanent support, and the center of the upper ball joint and the lower ball joint There is a through hole for the pin shaft to pass through. The lower part of the pin shaft is fixedly connected with the lower ball hinge. The through hole of the lower ball hinge is a central circular through hole. The central circular through hole matches the outer circle of the pin shaft. The through hole is an inner square hole, and a slider is set on the pin shaft in the inner square hole of the upper ball hinge. The slider can rotate with the upper ball hinge with the pin shaft as the axis. The outer surface of the slider has four The four faces of the inner square hole of the upper ball hinge are respectively flush with the plane, and there is a movement gap between the four planes of the slider and the corresponding faces of the inner square hole of the upper ball hinge. Before the rotation, the slider The top surface is in contact with the bottom surface of the beam body by adjusting the backing plate. After the rotation, the top surface of the slider does not contact the bottom surface of the beam body, which solves the design problem of the swivel cap on the top of the bridge pier and effectively reduces the structural size of the pier abutment , reduce the cost of bridge rotation.

Description

technical field [0001] The invention belongs to the field of bridges and building structures, and specifically relates to a pier top swivel spherical hinge with the function of preventing falling beams and a swivel method. Background technique [0002] In recent years, with the continuous innovation and development of bridge swivel construction technology and construction technology, bridge swivel construction has been widely used in the construction of bridges across existing railway lines, expressways, mountains and valleys with heavy traffic. The bridge swivel construction can transform the space construction of the bridge axis into the construction along the coastline or the ground with better conditions, and provide a reliable guarantee for the safety, quality and progress of bridge construction under special conditions. Swivel construction technology is more and more favored by bridge builders because of its economy, convenience and reliability. [0003] At present, t...

AI Technical Summary

Problems solved by technology

In this way, the swivel spherical hinge can realize the swivel function and the bridge limit function at the same time, which solves the design problem of the swivel cap at the top of the bridge pier, effectively reduces the structural size of the pier abutment, and reduces the cost of the bridge swivel

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