Connection form of steel structure: in-depth analysis of high-strength bolt connection

In steel structure engineering, the choice of connection form is directly related to the overall performance and safety of the structure. Among many connection methods, high-strength bolt connection occupies a place in the field of steel structure with its unique advantages.

1. Advantages of high-strength bolt connection

High-strength bolt connection stands out in steel structure engineering with its high strength, high elasticity, and easy installation process. Compared with the traditional welding connection, a high-strength bolt connection does not need a heat source, avoiding the possible deformation of heat-affected areas and residual stress in the welding process. In addition, high-strength bolt connection also has better anti-fatigue performance, suitable for bearing large power loads and bending moment of steel structure connections.

2. The principle and application of high-strength bolt connection

High-strength bolt connection produces friction between the connecting plates through the pre-tensioning force, to realize the connection between the steel materials. When subjected to external forces, the bolts and the connection plate are jointly stressed to form a whole, ensuring the stability of the structure. High-strength bolt connection is suitable for various steel structure connection scenarios, such as bridges, high-rise buildings, industrial plants, and so on.

3. Design and construction suggestions for high-strength bolt connection

Bolt selection: According to the stress situation and design requirements of the connection part, choose suitable high-strength bolts to ensure that the bearing capacity and shear strength of the bolts meet the requirements.

Preload control: preload control is the key to high-strength bolt connection. In the construction process, special tools should be used to pre-tighten the bolts to ensure that the pre-tensioning force meets the design requirements.

Connection plate processing: the processing quality of the connection plate directly affects the tightness and stability of the bolt connection. In the process, the dimensional accuracy and flatness of the connection plate should be ensured.

4. Quality control and safety management

In the construction process of high-strength bolt connection, the quality of bolts, the construction environment and other factors should be strictly controlled to ensure the construction quality. At the same time, strengthen the safety management of the construction site, and take necessary protective measures to ensure the safety of construction personnel.