A support for fast and precise positioning of truss nodes in truss bridges

Abstract

The invention relates to a support for fast and precise positioning of truss nodes of a truss bridge, comprising a truss positioning system, a support fine-tuning system and a support unloading device, the truss positioning system is arranged above the support fine-tuning system, and the support fine-tuning system is arranged on the support unloading device Above; the supporting and unloading device adopts a sulfur sand box; the truss positioning system includes a steel frame and positioning rollers for positioning the truss. The steel frame is composed of a left inclined frame, a right inclined frame, an upper beam, a lower beam, and a left inclined The beam, the right inclined support beam and the vertical beam are connected; the upper beam, the lower beam, the left inclined support beam, the right inclined support beam and the vertical beam are all length-adjustable tie rod beam structures; there are multiple positioning rollers, which are installed separately On the left side inclined frame and the right side inclined frame and arranged up and down in sequence along the corresponding inclined frame; the support fine-tuning system includes a roller mounting steel frame, a plurality of support rollers, prefabricated steel plates and left and right positioning adjustment screws. This support can adapt to different truss constructions.

Description

technical field [0001] The invention belongs to the technical field of truss bridge construction, and relates to a fast and precise assembly and positioning construction technology of truss bridge truss nodes, in particular to a support for fast and precise positioning of truss bridge truss nodes. Background technique [0002] Due to the complexity of the structure of the truss bridge itself, the intersection of the installation of the upper truss and the pouring of the main girder during the construction process, as well as the long construction period and the complex construction environment, the shape and position of the truss bridge during the truss erection process vary greatly. difficult to control. In the process of truss construction, the support is an important factor to determine the safety, speed and economic cost of its construction positioning. At present, the research on support design in China is not deep enough, and the perfect combination of design theory a...

AI Technical Summary

Problems solved by technology

At present, the research on support design in China is not deep enough, and the perfect combination of design theory and engineering practice has not yet been achieved. Therefore, it is necessary to select appropriate supports and construction methods corresponding to different bridge conditions to adjust the structural shape and position of the truss during the construction process. The splicing accuracy and the design requirements after the completion of the construction have become urgent technical problems to be solved in the development of truss bridges

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