Novel large-tonnage bridge girder erection machine and construction method thereof

Abstract

The invention discloses a novel large-tonnage bridge girder erection machine and a construction method thereof. The novel large-tonnage bridge girder erection machine comprises a main frame structure composed of a bridge girder erection machine main girder, a main girder front-linkage straining beam, a main girder rear-linkage straining beam. The main frame structure is provided with a middle supporting device, a front auxiliary supporting device and a rear auxiliary supporting device which are sequentially connected. The novel construction method of the novel large-tonnage bridge girder erection machine includes a bridge girder erection machine via hole process, a via hole and girder erection conversion process, a bridge girder erection machine girder erection process, a girder erection and via hole conversion process, a normal girder erection and tail span conversion process, a variable span construction process, a small curved section construction process and a pack transferring construction process. The novel large-tonnage bridge girder erection machine achieves the purpose that a prefabricated bridge is mounted through the bridge girder erection machine under the conditions of a large span, a large tonnage, small curvature, various changes of the span and amplitude, frequent transferring and the like and has the advantages of being safe, efficient, easy to operate and maintain, good in stability, dispersed in construction load and the like.

Description

technical field [0001] The invention belongs to the technical field of bridge construction, and in particular relates to a novel large-tonnage bridge erecting machine and a construction method thereof. Background technique [0002] Many large-scale bridge projects spanning bays in the world are generally designed as long-span and large-tonnage prefabricated box girders. Prefabricated girders located in deep water areas can be erected with large-tonnage floating cranes, which is more efficient. However, the shallow water area or tidal flat area cannot be reached by floating cranes, so other processes and supporting equipment are needed to solve the problem of prefabricated beam erection. [0003] The construction method of erecting prefabricated bridges using bridge erecting machines has been very mature in the installation and construction of prefabricated beams in general bridge engineering, and the construction efficiency is high, so it has been widely used in the erection...

AI Technical Summary

Problems solved by technology

[0005] In order to solve the deficiencies in the prior art, the present invention provides a new type of large-tonnage bridge erecting machine and its construction method, which solves the problem of large span, large tonnage, small curvature, many changes in span and amplitude, and frequent field transitions. Prefabricated bridges are installed with bridge erecting machines, which have the advantages of safety, high efficiency, simple operation and maintenance, good stability, and construction load dispersion.

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