In-situ assembling and lifting construction in-position butt joint method for multi-layer steel truss

Abstract

The invention discloses an in-situ assembling and lifting construction in-position butt joint method for a multi-layer steel truss. The method is characterized in that multi-layer steel truss chord rods and corbels both adopt an oblique joint mode, all layers of chord rods are cut off in a staggered mode, the projection distance between the upper layer of chord rod and the adjacent lower layer ofchord rod is staggered by 100 mm or above so as to ensure that the truss is not interfered all the time in the lifting process, adjustment is carried out again when in-position butt joint is achieved,during in-position operation, the truss is ensured to be quickly and stably in place through quick connection joints, the whole construction process is safe and efficient, the practicability is veryhigh, the construction process is improved, the interference is less, the construction efficiency is high, the performance is stable, and the effects of being safe and reliable are achieved. The in-situ assembling and lifting construction in-position butt joint method has a wide application prospect in the multi-layer steel truss in-situ assembling and lifting construction.

Description

technical field [0001] The invention belongs to the technical field of steel structure engineering construction, and in particular relates to a corresponding method for in-situ assembly, lifting and construction of multi-layer steel trusses. Background technique [0002] At present, when the multi-layer steel truss is assembled and lifted in-situ, the steel truss chords and corbels are generally directly butt joints, and the chords of each layer are disconnected at the same distance. The disadvantage of such a counterpart is that the entire truss is in its own state during the lifting process, and there will be a certain amount of swing. Once the lowermost corbel interferes with the uppermost chord, it needs to be dealt with on the spot, which may cause too many dry times during the lifting process. , and the disadvantage of direct butt is that the upper and lower flange plates and the web of the chord may interfere at the same time. Another method is to short-circuit the s...

AI Technical Summary

Problems solved by technology

The disadvantage of this kind of counterpart is that the whole truss is in its own state during the lifting process, and there will be a certain swing. Once the lowermost corbel interferes with the uppermost chord, it needs to be handled on site, which may cause too many times of dryness during the lifting process. , and the disadvantage of direct butt joint is that the upper and lower flanges of the chord and the web may interfere at the same time

Another method is to short-circuit the steel truss chords, which solves the interference problem, but greatly increases the workload of on-site welding, and the short-connection of components also has a certain impact on the quality of the project

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