A construction method of steel triangular brace

Abstract

The invention discloses a construction method of a steel triangular brace, which comprises the following steps: in the first step, first and second steel box beams are prefabricated, and the first steel box beam is provided with a grouting hole, an overflow hole and an overflow observation hole; In the second step, the upper port of the second steel box girder is welded to the right part of the first steel box girder; in the third step, the first steel box girder and the second steel box girder are lifted to the design height, and then the first steel box girder is hoisted to the design height. The left end of the box girder is welded to the pre-embedded steel box column of the frame column, and the lower port of the second steel box girder is welded to the pre-embedded steel box column under the first steel box girder; the fourth step, the grouting pipe Penetrate the inner cavity of the second steel box girder, inject micro-expanded concrete into the inner cavity of the second steel box girder, and stop grouting until the slurry overflows in the overflow hole. The present invention is grouting from the connection between the second steel box girder and the first steel box girder, the first steel box girder provides an operation surface for pouring, reduces the construction difficulty, and can also ensure the first steel box girder and the second steel box girder. The tight fit between them improves the connection stability.

Description

technical field [0001] The invention relates to a steel triangle brace grouting technology, in particular to a construction method for a steel triangle brace. Background technique [0002] In recent years, the application of steel triangular braces in the field of construction has become more and more extensive. For example, steel triangular braces are usually set at the connection between the tower and the connecting body to improve the stability of the connecting body. Most of the steel triangle braces are box-shaped structures, including horizontal steel box girders and inclined steel box girders. The horizontal steel box girders and inclined steel box girders are welded together with the steel box columns in the vertical walls or columns to form a triangular support. In addition, when the steel triangular brace bears a large load, micro-expansion concrete is often poured into the inclined steel box girder to increase the bearing capacity of the inclined steel box girder....

AI Technical Summary

Problems solved by technology

However, this construction method has the following technical problems in actual construction: first, the horizontal steel box girder and the inclined steel box girder need to be welded together at high altitude and respectively welded to the steel box column, and the welding workload is large; Due to the lack of operating surface when pouring concrete, an additional cantilever platform needs to be erected, which increases the difficulty of construction; moreover, the use of holes on the slope of the inclined steel box girder cannot guarantee the close fit of the inclined steel box girder and the horizontal steel box girder. Gaps are prone to appear at the joints of the latter, and the connection stability is poor

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