Arrangement and requirements of steel structure bolts

Category： Industry News

Time：2020-07-08

The connection methods of steel structure buildings are bolted connection and welding, riveting, of which bolted connection is one of the most common connection methods. The connection of steel structure is an important factor related to the stability of steel structure, so steel structure bolts should pay special attention to the arrangement and structural requirements when connecting the structure.

Therefore, in the face of steel structure engineering buildings, we must clearly and accurately judge what arrangement is more appropriate during the construction process. Regardless of the arrangement, the mid-range, end and margin of the bolt on the member should also meet the following requirements:

1. The force requires that the middle distance of the bolt should not be too small, otherwise the cross-section of the component will be weakened too much. When the steel structure components in Chengdu are under pressure, the middle distance in the direction of pressure should not be too large, otherwise it is easy to produce drum music in the connected plates. In order to prevent the end steel plate of the component from being cut, the outermost row of bolts along the direction of internal force should have sufficient end distance.

2. The structure requires that the middle distance of the bolt should not be too large, otherwise the steel plate cannot be closely fitted. The middle distance, margin and end distance of the outer row bolts should not be too large, otherwise the contact surface is not close enough, so that moisture intrusion causes rust.

3. The construction requires that a sufficient distance should be maintained between the bolts to facilitate the turning of the wrench to tighten the nut.

The link method of steel structure building

seems simple, but it is actually quite important, do a good job in every detail of the steel structure construction process, in order to ensure the quality and stability of the steel structure, the so-called details determine success or failure, only fully do the details work to complete a qualified steel structure building.

The arrangement of bolts on the components should be simple and uniform, and strive to be compact, usually in the form of parallel and staggered. The parallel is relatively simple and neat, and the size of the connecting plate used is small, but due to the existence of bolt holes, the cross-section of the component is greatly weakened. The wrong column reduces cross-section weakening, but the arrangement is more complex and the size of the connecting plate is larger.

Keywords： Arrangement and requirements of steel structure bolts

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