The Optimum Design Of Beam-Pillar-Join Connection Of The Steel Structure

Along with the steady development of the economy, the steel structures are being application extensively Because of the special function. But at the same time, the troubles of the steel structures that appear in the process of construction and the breakage in the earthquake, the people know that the safety and credibility of the steel structure beam-Pillar connection have affect safety of the whole function of the steel structure and the steel structure engineering deeply. By the function of undertaking power the conjunction of the steel structure beam-Pillar Connection can is divided into: The rigid connection, the hinge connection and semi- rigid connection between the both above. The beam-pillar connection of the steel frame structure usually being according to the rigid connection design in which there is enough rigid in the connection of main beam-pillar. According to the conjunction method, the steel structure beam-pillar conjunction can is divided into: weld conjunction, the bolt connection node and bolt- weld connection.Firstly, in this thesis, by contrast, the complete analysis and study had been done about the three kinds of main connection form: weld connection, the bolt connection joint and bolt- weld connection. At the same time, the influence of various joints function of connection form to the steel frame structure.Secondly, on the foundation of existing research result, consulting the research method of other scholars, some typical rigid degree parameter had been computed. The influence of various joints function of conjunction form to the steel frame structural had been analyzed by rigid degree parameter.Thirdly, it had been elaborated in detail the design thought of improving steel frame beam -pillar joints by making use of the dog-bone connection. A great deal of operation had been carried on by ANSYS procedure in order to contrast and analyze the function of undertaking various power of the two form: dog-bone connection and common connection. A conclusionhad been draw out: when dog-bone connection had been adopted, if the size of beam edge being weaken adequately, the stress biggest value of beam-pillar connection under power will appear at the part which had been weaken on beam edge where there is a great deal of transform ability, deviating beam-pillar joints where the brittleness breakage had taken place most easily in lot of actual engineering. The purpose of increasing structure ductility had been attained. At the same time the reasonable position and sizes of dog-bone conjunction had been discussed.Finally according to the conclusion drawn above, dog-bone connection form which are economy and reasonable and fitting and some suggests about construction had been put forward in this thesis.