Assembling construction method for arch ribs of tied arch bridge

Abstract

The invention relates to a method or a device exclusively used for erecting or assembling bridges, and to the field of general bridge technology. More specifically, the present invention relates to an assembling construction method for arch ribs of a tied arch bridge comprising the following steps: (1) constructing a box girder; (2) hoisting the arch ribs by means of transporting a crane A to a working surface and using the crane A to hoist sections of the arch ribs; (3) pumping concrete; (4) mounting and inspecting accessories; (5) coating the arch ribs. By coating with the last topcoat after appropriately adjusting a suspender force, only the crane A is needed for hoisting the arch ribs, so that a crane with a larger hoisting load on the ground for hoisting the sections of the arch ribs is not needed, and the hoisting height and hoisting distance of the crane are greatly reduced in the process of hoisting the sections of the arch ribs. In addition, because the crane A with a small hoisting load is used while hoisting the sections of the arch ribs and the crane with the larger hoisting load is only needed for hoisting the crane A, the ground trimming especially for the crane with the larger hoisting load is not needed, so that the construction cost is saved and the construction period is shortened.

Description

technical field [0001] The invention relates to a method or equipment specially used for erecting or assembling bridges and the general technical field of bridges, in particular to a construction method for assembling arch ribs of a tied arch bridge. Background technique [0002] A bridge is a special artificial structure with load-bearing capacity used for railways, roads, channels, pipelines, etc. to cross rivers, valleys or other traffic lines. When the bridge needs to cross the railway, it needs a larger span, especially the bridge position and the railway. When the angle of intersection is large, the distance that the bridge needs to span increases greatly. When building a bridge, cranes are required to hoist the bridge components. However, when the span of the bridge is large and the vault of the bridge is relatively high, a large crane is required to operate during the construction of the arch ribs. The geographical conditions near the site have relatively high requi...

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is: the angle between the newly built bridge and the existing railway is so large that the vertical and horizontal distances between the crane support position and the bridge vault are large, and there are no roads at both ends of the newly built bridge to directly transport the components To the bridge deck, it is necessary to use super-large cranes for arch rib construction. A method for assembling arch ribs of tie-bar arch bridges is provided. Large cranes are used to lift small cranes to the bridge deck for construction, so that only small cranes are needed. Arch rib construction

Images