Manufacturing method of arch hinge of steel arch bridge

Abstract

The invention discloses a manufacturing method of an arch hinge of a steel arch bridge and belongs to the technical field of bridge steel structure machining and manufacturing. The manufacturing method of the arch hinge of the steel arch bridge includes the following steps that hinge shaft and bearing bush plate materials are obtained; holes are evenly drilled in the hinge shaft plate material with the axial center generatrix of the contact face of a hinge shaft and a bearing bush being a symmetry line; the ends of the hinge shaft and the bearing bush plate materials are pressed through a veneer reeling machine, and a hinge shaft cylinder and the bearing bush are reeled; a generatrix is formed in the axial center of the bearing bush in an etched manner and coincides with the axial center generatrix of the hinge shaft, and rear rolling bolts of drilled hole groups are arranged; a transverse space ring is placed in the hinge shaft, the transverse space ring in the hinge shaft and a longitudinal structure are welded, and then a hinge shaft end plate is welded; the hinge shaft and a bearing bush plate which are connected together through bolts are hoisted into a bearing bush base to be welded; the hinge shaft and the bearing bush bolts are disassembled, and the arch hinge is obtained after bolt holes are plugged; the gap between the hinge shaft and the bearing bush is detected; and the hinge shaft is disassembled to be welded together with an arch foot section. The manufacturing method of the arch hinge of the steel arch bridge increases material utilizing rate, is not limited by machining of large mechanical cutting equipment, and is low in cost and short in manufacturing period.

Description

technical field [0001] The invention relates to the technical field of bridge steel structure processing and manufacturing, in particular to a method for manufacturing an arch hinge of a steel arch bridge. Background technique [0002] In the design and construction of large-scale steel structure arch bridges, in order to adjust the alignment of the arch ribs in a timely manner, arch hinges are generally set at the arch feet, so that the arch ribs and abutments are in a hinged state during the cantilever construction stage, and the alignment is closed after adjustment Then the arch-hinge sealing is converted into a rigid connection. This type of hinge is mostly designed in the form of a hinge shaft and a bearing pad, and has high requirements on the contact surface between the hinge shaft and the bearing pad. It is usually completed by large-scale machining and cutting equipment, which has low material utilization rate, long manufacturing cycle, and processing cost. High, a...

AI Technical Summary

Problems solved by technology

[0003] The invention provides a method for manufacturing the arch hinge of a steel arch bridge, which solves or partially solves the problem that the hinge shaft and the bearing bush are completed by large-scale machining and cutting equipment in the prior art, the material utilization rate is low, the manufacturing cycle is long, the processing cost is high, and Technical Problems of Limited Resources of Large-Scale Machining and Cutting Equipment

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