A swivel type steel pipe arch bridge installation adjusting structure and a construction method thereof

CN122446631APending Publication Date: 2026-07-24CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST +2
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA MERCHANTS CHONGQING COMM RES & DESIGN INST
Filing Date
2026-06-16
Publication Date
2026-07-24

AI Technical Summary

Technical Problem

In existing technologies, during the construction of steel pipe arch bridges, crosswinds can easily cause the bridge structure to rotate in the opposite direction. In low-temperature environments, the rotation friction of the ball joints is unstable. The angle adjustment accuracy before the bridge closure is insufficient, and there are potential risks in load transfer and frame fixing.

Method used

A rotating steel pipe arch bridge installation and adjustment structure is adopted, including a connecting seat, ball joint, support assembly, limit assembly, fine-tuning assembly and stabilizing assembly. Through components such as ratchet pawl, graphite strip lubrication, fine-tuning bolt and electric push rod, the bridge body can be stably rotated, precisely adjusted and safely lowered.

Benefits of technology

It effectively disperses lateral wind force, ensures smooth rotation of the bridge body, improves the alignment accuracy of the closure, realizes smooth load transfer and fixation, avoids positional deviation, and enhances connection stability and construction safety.

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    Figure CN122446631A_ABST
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Abstract

The application discloses a swivel type steel pipe arch bridge installation adjusting structure and a construction method thereof. The structure is provided with a ball hinge, a ratchet and a ratchet pawl which are matched with each other at the connection position of a bridge body and a bridge pier to resist the reverse force caused by lateral wind. A graphite contact structure is matched to optimize the rotating lubrication condition under low temperature conditions. Position adjusting components with different driving forms are arranged on both sides of the bridge pier to complete fine alignment of the bridge body. A support structure filled with steel sand is used to control the falling rhythm of the bridge body. A guide component and a multiple engagement structure are additionally arranged to improve the connection stability of the bridge body after falling. The structure can be used for the whole process construction of overall swiveling, joint butt joint, load conversion and fixed landing of various swivel type steel pipe arch bridges. The problems that the bridge body is easily reversed by lateral wind during open-air construction, the ball hinge rotating friction is unstable under low temperature conditions, the angle adjusting precision of the bridge body before joint is insufficient, and hidden troubles exist in the load conversion and frame fixing of the bridge body are solved.
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