Steel structure connections include riveting, welding, hybrid riveting joints, bolt connections, etc. The advantages of riveting are reliable force transmission, good toughness and plasticity, easy quality inspection, and strong resistance to dynamic loads. But the riveting method also has its drawbacks: complex structure, steel and labor consumption.
Steel structure is a type of building structure mainly composed of steel, which is a major form of building structure. The main structures are steel beams, columns, trusses, and other components, usually welded. Connect screws or rivets together. Due to its light weight and lightweight work, it can be used in large workshops, taverns, high-rise residential areas, and other directions in a grand atmosphere. There are three normal ways of overlapping steel structures: welding connection, bolt connection, and riveting.
- Welded joints: For rigid structures that can withstand bending moments, except for structures that directly bear dynamic loads, welding connections can be used at ultra-low temperatures.
- Bolted connection: It is hinged (zero bending moment) and can generally be used, with fast on-site operation, convenient disassembly and repair.
- Riveting: The force on the riveted structure is relatively small.
The function of joining is to combine plates or shaped steel in a certain way, or to combine several parts into a whole structure, so that they work together.
Weld connection
Advantages:
Reduce section size and save steel structure;
It can be connected into various states of parts, and can be welded immediately when connected. Normally, there is no need for additional overlapping parts, making the parts simple and time-saving in production;
Good connection sealing and high stiffness;
Easy to operate automatically and with high productivity.
Disadvantages:
The material in the heat affected zone near welding is slightly brittle;
The existence of welding residual stress and deformation has adverse effects on the construction of the structure;
Especially at low temperatures, due to the problem of cracks, if cracks appear inside, they can quickly expand to the entire cross-section, especially at low temperatures where fracture is prone to occur.
For ordinary arc welding work and equipment, Shielded metal arc welding normally has semi-automatic Submerged arc welding welding and automatic Submerged arc welding.
