Mal-position assembly in-position method of truss bridge

Abstract

The invention relates a mal-position assembly in-position method of a truss bridge. The method comprises the steps of building an assembly platform: excavating a roadway at a bridge abutment to form a work platform or erecting a steel tube bracket platform in the middle of a bridge, and arranging a girder assembling platform in the middle of a work platform or a bracket platform; firstly assembling the truss bridge: firstly assembling the truss bridge on an assembly platform, longitudinally moving the truss bridge to empty the space of the assembly platform part; assembling the truss bridge for the second time, the longitudinally moving the truss bridge to empty the space of the assembly platform part; repeating the steps to assemble the truss bride for the third time, the fourth time and the like and putting the truss bridge in position, taking width of the assembly platform as the limit, rotating the whole truss bridge by an angle to be in position, or longitudinally positioning or horizontally positioning. According to the mal-position method of the truss bridge, the technical difficulty that the truss bridge is difficult to be in position by one step when a high-pier truss bridge is erected at a complex terrain area, the operation is simple and convenient, the truss bridge assembling efficiency is high, and the alignment is accurate.

Description

Technical field [0001] The present invention involves a bridge installation method, which specifically involves the place where the truss beam is abnormal. Background technique [0002] At present, in the bridge engineering, the abnormal assembly of the truss beam is generally used to build a direct lifting position. The specific method is to flatten the nearby nearby venues as an assembly platform.After the beam assembly is completed, two cranes are lifted directly, or the transportation is completed after the assembly is completed.These two methods have high requirements for terrain. When the environmental conditions in which the project is located, the terrain is complicated, and the bridge type is curved, slopes, and oblique.For transportation, it is often difficult for the truss beam to assemble in one step in the process of setting up. It is difficult for the existing technology to meet the construction of high -pier truss beams under the complex conditions of the mountain ...

AI Technical Summary

Problems solved by technology

These two methods have high requirements on the terrain. When the environmental conditions of the project site are harsh, the terrain is complex, and the bridge type is curved, sloped, or inclined, it is difficult to achieve a flat site for assembling the truss beam near the bridge span, and it is also difficult to assemble the truss beam on the site. It is often difficult to assemble the truss girders in one step during the erection process, and the existing technology is difficult to meet the construction of high-pier truss girders under the complex terrain conditions in mountainous areas.

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