The Analysis And Calculation Of Steel Structural Connection

The connection of steel structures is an important part for the steel structural member. The types of connections which are commonly used in practical engineering, such as welding, bolting, high-strength bolting and mixed connections are discussed in this paper. Except the introduction of the types and calculation under different state loading, the technique, quality test, examination and acceptance for the steel connections are also summarized in this paper by author's years practical experiences. The commonly used methods of connections, especially the high-strength bolted connection and welding with bolting mixed connections are discussed in more detail. The analysis for the problems, such as partial penetrated butt weld and welding deformation is also discussed in the paper. The selection of connection materials, connection processes, quality control, assurance etc. are discussed also.Some steel projects which have been used for years, may have troubles caused by changing of loads and possible hidden problem during construction. So some members in the original steel structures need strengthening. So this paper gives a brief introduction on the rules and methods about connection strengthening.This paper ends up with two living examples concerning connection techniques. One is the strengthening and overhauling of steel ladle in Bao Steel. The other one is overhauling of No.2 blast furnace frames also in Bao Steel. These examples prove that the applications of connection techniques are popular and reliable. In addition, they also show that the management, equipments, materials technique, operations and security of connection projects are more important.