Rigid connection node capable of bearing dynamic load and needing fatigue analysis of equipment supporting system

Abstract

The invention provides a rigid connection node capable of bearing a dynamic load and needing a fatigue analysis of an equipment supporting system and relates to a beam column rigid connection node capable of bearing the dynamic load and needing the fatigue analysis of a steel structure supporting system, which is applied to large-sized mining equipment. A flange at one side of a steel column (1) is welded with an H-shaped bracket (4) which is higher than the height of the section of a horizontal steel beam; the H-shaped bracket (4) is provided with a plurality of flange webs (5) of the bracket; the inclined plane of the H-shaped bracket (4) is welded with a first end plate (6); the first end plate (6) is connected with a second end plate (7) through a bolt (8); one end of a steel beam upper surface reinforcing armpit (9) is connected with the second end plate (7); and the other end of the steel beam upper surface reinforcing armpit (9) is connected with the steel beam (3). According to the rigid connection node disclosed by the invention, the requirements of all mechanical properties under fatigue acting forces can be met, the acting force has good engagement with equipment, and the safety and reliability and the construction convenience of field installation are met.

Description

Technical field: [0001] The invention relates to the technical field of structural engineering, in particular to a beam-column rigid connection node which is applied to a steel structure support system of a large-scale mining equipment and bears a dynamic load and needs fatigue checking. Background technique: [0002] In the current domestic steel structure design, for the structural part bearing the dynamic load, the structural design is generally carried out by multiplying the dynamic load by an appropriate amplification factor based on experience based on the vibration frequency of the equipment generating the dynamic load. Nodal connection between them, fatigue calculation is no longer considered, but in actual situations, the connection between structures plays a very important role in the safety and stability of the entire structure, especially the parts bearing dynamic loads, which play the role of connection The bearing capacity of the bolts or welds is far from the ...

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Problems solved by technology

[0002] In the current domestic steel structure design, for the structural part bearing the dynamic load, the structural design is generally carried out by multiplying the dynamic load by an appropriate amplification factor based on experience based on the vibration frequency of the equipment generating the dynamic load. Nodal connection between them, fatigue calculation is no longer considered, but in actual situations, the connection between structures plays a very important role in the safety and stability of the entire structure, especially the parts bearing dynamic loads, which play the role of connection The bearing capacity of the bolts or welds is far from the static load, so it is very necessary and important to consider the fatigue calculation when making joints, especially for the steel structure support system of large mining equipment, such as for screening iron ore Funnel equipment, and the supporting steel structure system of the ore conveyor belt equipment, only consider the influence of fatigue in the structural design and ignore the node treatment of the structural connection, which is very dangerous and the consequences are very serious. The conventional structural connection form It is often unable to meet the force requirements under constant vibration conditions

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