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What are the connection methods of steel structure?
Steel structure connection refers to the mutual connection between steel structure members or components. Steel structure is composed of steel materials, which is one of the main building structure types. Steel structure has the advantages of high material strength, steel toughness, good plasticity, uniform material and high structural reliability. The steel structure connection methods applied by Dalian Guangtong Steel Structure Co., Ltd. are as follows:
1. Weld connection
The welding seam connection in steel structure mainly adopts electric arc welding (that is, at the joint of components, the welding rod or welding wire metal at the welding position is melted by the high temperature generated by the arc, so that the components are connected together). Arc welding is divided into industrial welding, automatic welding and semi-automatic welding. Automatic welding and semi-automatic welding, submerged arc welding or gas (such as carbon dioxide gas) welding can be used.
The advantages of weld connection are strong adaptability to geometry, no weakening of cross-section, automatic operation, good tightness and high structural stiffness.
2. Ordinary bolt connection
The connecting pieces of ordinary bolt connection include bolt rod, nut and washer. Ordinary bolts are made of ordinary carbon structural steel or low alloy structural steel; they are divided into rough bolts and refined bolts. The rough bolt is made of unprocessed round rod. The hole diameter of the bolt is 1.0-1.5mm larger than the diameter of the bolt rod. It is convenient for loading and unloading and installation. It is suitable for the connection of secondary components or temporary fixation on the construction site, or for the connection of transferring tension force by bolts. The refined bolt is made of bar steel by cutting on the lathe. The diameter of the rod is 0.3-0.5mm smaller than the diameter of the hole. The shear strength of the refined bolt is better than that of the rough bolt.
The ordinary bolt connection has the advantages of convenient loading and unloading, convenient installation and so on.
High strength bolt connection
High strength bolt connector is also composed of bolt rod, nut and washer. It is made of steel with higher strength after superheating treatment. The high strength bolt connection uses the special wrench to tighten the high strength bolt, applies the prescribed pre tension to it. High strength bolt shear connection can be divided into friction type and shear compression type (or pressure bearing type).
The high strength bolt connection has the advantages of friction type, small shear deformation and good elastic performance, which is especially suitable for the structure with follow-up load. The bearing capacity of pressure bearing type is higher than that of friction type, and the connection is compact.
4. Rivet connection
Rivets are made of rivet steel with good upset performance. The construction procedure of rivet connection is to make holes 1.0-1.5mm larger than the diameter of nails on the connected components. Then the rivet with a semicircular head at one end is heated to a cherry red color, inserted into the hole, and then riveted with a rivet gun or rivet machine to fill the rivet hole and make another rivet head. The rivets are cooled and contracted after riveting, which produces clamping force on the connected plate bundles, which is conducive to force transmission. The results show that the toughness and plasticity of rivet connection are good, and it is suitable for large-span steel structure under large dynamic load.
Rivet connection has the advantages of reliable force transmission, good toughness and plasticity, easy quality inspection and good dynamic load resistance.
Dalian Guangtong Steel Structure Co., Ltd. adheres to the concept of "honesty and pragmatism, innovation and win-win, satisfactory service, and the most outstanding". Based on the brand-new management mode, perfect technical business, considerate service and excellent quality, it constantly provides high-quality service, continues to improve management, upholds customer first, and strives to provide customers with satisfactory products and considerate services, and pursues to share with customers Win common development, strive to build into a sustainable development, excellent enterprise.
