A kind of steel structure pre-assembly method

Abstract

The invention relates to a steel structure pre-assembly method, comprising the following steps: measuring and generating a sub-component model, which includes the external dimensions of the sub-component and the position dimensions of the positioning hole system on the sub-component; loading the first sub-component; The two holes with the farthest relative distance in the positioning hole system of the component are respectively loaded with standard bolts, and the standard bolts are tangentially matched with the holes; the second sub-component is installed so that the second sub-component needs to be connected with the first sub-component. The hole sleeves in the positioning hole system matched with the standard bolts are inserted into the standard bolts and tangentially matched with the standard bolts; if all the above-mentioned holes can realize the tangential fit with the corresponding standard bolts, it is qualified; if the above-mentioned holes cannot be all If it achieves a tangential fit with its corresponding standard bolt, it is unqualified. It fully considers the impact of the margin between the bolt and the hole on the actual assembly, and can more truly reflect the connection relationship between the bolt and the hole in the actual assembly.

Description

technical field [0001] The invention relates to the technical field of steel structures, in particular to a steel structure pre-assembly method. Background technique [0002] Steel structure buildings have the advantages of high strength, light weight, good seismic performance, low foundation cost, large building area, high building quality, suitable for industrialized and standardized production, not affected by the construction season, and low comprehensive cost. As a representative of green buildings, it has reached a high level in design, manufacturing and installation technologies, mastered the design and construction technologies of various complex buildings, and has built many large-scale and complex-structured steel buildings all over the country. Structural factory buildings, long-span steel structure civil buildings and railway bridges, etc., steel structures are generally made in the factory to complete the components (including enlarged components), transported t...

AI Technical Summary

Problems solved by technology

[0004] However, in the virtual pre-assembly method of steel structures in the prior art, the cooperation between the bolts and the holes adopts the way that the center of the circle coincides with the center of the circle. There is an assembly allowance between the bolts, and the matching method of the center of the bolt and the hole and the center of the circle in the prior art cannot reflect the influence of the assembly allowance between the hole and the bolt on the actual assembly

For example, when M20 bolts are used for connection and fastening, a hole with a diameter of 24mm is generally designed to match it, so that the bolt has a 4mm movable margin in the hole, and this movable margin can allow a certain amount of assembly during the actual assembly process. The error plays a very important role, but the existing pre-assembly technology does not take this activity margin into account, so it cannot truly simulate and reflect the actual assembly process

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