Integral gusset accuracy locating method for steel truss stiffened continuous rigid frame

Abstract

The invention provides an integral gusset accuracy locating method for a steel truss stiffened continuous rigid frame. Two 8 m double 45a I-steels which are used as longitudinal beams and two double 28 a I-steels which are used as cross beams are welded together with the top surfaces of double 45 a I-steel lower flange plates and web plates to form a framework; the distance between two double 45 aI-steels in the framework is 1368 mm; the distance between the two double 28 a I-steels in the framework is 2930 mm; the distance from the double 28 a I-steel web plate on the left side to an embedded gusset plate on the right side is 155 mm; and the distance from the double 28 a I-steel web plate on the right side to an embedded gusset plate on the left side is 175 mm. During construction, as the gusset plates are controlled in designed positions by using a hanging basket track anchoring rib tension fixed steel skeleton, the integral gusset accuracy locating method for the steel truss stiffened continuous rigid frame has the characteristics of accurate locating, convenient assembling and disassembling, reusability and so on. According to the integral gusset accuracy locating method for the steel truss stiffened continuous rigid frame, the locating accuracy of the embedded gusset plates can be greatly improved, and the construction quality can be effectively improved.

Description

technical field [0001] The invention relates to a positioning device for the construction of a large-span continuous steel structure, in particular to a positioning construction tool and a construction method for a buried integral gusset plate of a large-span stiffened steel-bit continuous steel structure for railways and highways. Background technique [0002] Taking the design of large-span continuous steel structures (or continuous beams) for high-speed railways as an example, as the design span of the beam increases, steel trusses are usually installed to improve the structural stress and reduce the deflection of the beam later. During the construction of the beam body, it is necessary to pre-embed the steel truss gusset plate at the designated position of the beam body. The gusset plate has the characteristics of heavy weight, large volume, many construction procedures, and high requirements for pre-embedded precision, which increases the difficulty of cantilever constru...

AI Technical Summary

Problems solved by technology

During the construction of the beam body, it is necessary to pre-embed the steel truss gusset plate at the designated position of the girder body. The gusset plate has the characteristics of heavy weight, large volume, many construction procedures, and high requirements for pre-embedded precision, which increases the difficulty of cantilever construction

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