Bridge fabrication machine capable of building and assembling two bridge segments

Abstract

The invention belongs to the technical field of bridge construction and discloses a bridge fabrication machine capable of building and assembling two bridge segments. The bridge fabrication machine is characterized in that a main beam of the bridge fabrication machine adopts two horizontal truss structure sets, each truss structure set comprises two integrally crossed main truss and a short tail truss segment, a lower joist system is arranged on the lower portion of each the main truss, supporting wheel trains are arranged below the truss structures to support on bridge span piers to be built, and girder cranes are arranged upon the truss structures and longitudinally move along the trusses. The bridge fabrication machine is characterized in that box girder segments preset in a girder fabrication yard beside a bridge site are adopted and conveyed to the tail portion of the bridge fabrication machine by a girder conveying vehicle, then the girder cranes hoist the girder segments in places, concrete wet joints are cast, pre-stressed tendons are tensed to form the bridge, and the bridge fabrication machine punches. The bridge fabrication machine has the advantages such that bearing load is high, two bridge segments are achieved by one punching, construction period is shortened, and construction cost is low and is suitable to construction of simple-supported box girder bridges on high speed railways, passenger special lines or expressways having span of 40m or above.

Description

technical field [0001] The invention belongs to the technical field of bridge construction. Background technique [0002] At present, the segmental box girder assembly bridge building machines at home and abroad are usually composed of a working span and front (rear) guide beams. Box girder segments are placed on the working span, concrete wet joints are poured, and prestressed tendons are stretched to complete. Fabrication of a one-hole bridge. This type of bridge building machine can make bridges with large spans and heavy girders, and is widely used in bridge construction with spans of more than 40m. However, this type of bridge building machine can only assemble and construct a bridge with one hole at a time, and then the bridge building machine moves forward through the hole to carry out the assembling operation of the segmental box girder in the next hole. The bridge task takes more than ten days on average, and the cost is relatively high. Contents of the inventio...

AI Technical Summary

Problems solved by technology

However, this type of bridge building machine can only assemble and construct a bridge with one hole at a time, and then the bridge building machine moves forward through the hole to carry out the assembling operation of the segmental box girder in the next hole. The bridge task takes more than ten days on average, and the cost is relatively high

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