Specially-shaped box girder erection construction process based on bowstring type center line positioning method

Abstract

The invention discloses a specially-shaped box girder erection construction technology based on the bowstring type center line positioning method; the process comprises the steps: S1, arranging a track extension pile foundation in a driving mode, and building a stable sliding rail foundation; S2, after the construction of the slide rail foundation is completed, prefabricating a special-shaped track beam, and mounting a bearing rail beam embedded part; and S3, erecting a specially-shaped box girder by adopting a method based on bowstring type center line positioning, and assembling the specially-shaped box girder and the slide rail foundation; according to the process, the specially-shaped beam is erected through a bowstring type center line positioning method, the problem that a traditional line positioning method in specially-shaped beam erection is more in restriction is effectively solved, and the technology has the advantages of being few in input personnel, high in precision, safe to operate, high in dynamic nature and free of large influence of local wind and sand.

Description

technical field [0001] The invention relates to the technical field of special-shaped beam erection, in particular to a construction process for special-shaped box girder erection based on a bowstring center line positioning method. Background technique [0002] The rocket sled is a kind of aerodynamic test equipment, which uses a powerful rocket booster to push the test object forward at high speed on a special slide rail similar to a railway, and then uses a high-speed camera and other equipment to record data to analyze its aerodynamics Performance; to put it more vividly: you can think of it as a rocket lying on the rails; the rocket sled can be used to develop nuclear weapons, hypersonic missiles and aircraft, catapults on aircraft carriers, fighter rocket ejection seats, and spaceships Cutting-edge equipment such as escape towers and electronic warfare weapons; it is an important device for supersonic experiments on land. At present, only a few countries such as the Un...

AI Technical Summary

Problems solved by technology

[0006]Aiming at the above-mentioned problems, the present invention aims to provide a special-shaped box girder erection construction process based on the bowstring center line positioning method. The method of erecting special-shaped beams effectively solves the problem of many constraints of traditional line positioning and traditional methods in the erection of special-shaped beams. It has the characteristics of less investment, high precision, safe operation, strong dynamics, and is not greatly affected by local wind and sand.

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