Research On Behavior And Design Method Of Beam-Column End-plate In Steel Frame

The revelation was gained after the 1994 Northrige earthquake and the 1995 Kobe earthquake earthquake, which bolt conection have a good behavior. These earthquake alse arouse engineers to resurvey the behavior of end-plate connections, it is well known that end-plate connection have an excellent energy dissipating mechanism, which can provide more capacity for yielding and ductility, belong to semi-rigid connections, become the hotspot of research and application at present. Because of the geometry complexity of bolted beam-column end-plate connections, the strength models presented in the past few decades can not predict the ultimate strength of end-plate connection in a satisfactory precision, and bolt is a impotant problem, so research on behavior of beam-column end-plate connection is not only significant for theoretical aspect, but also important in practice.Using the general finite element programming package of ANSYS8.0, The study of Steel beam-column end-plate connections is made, considering synthetically nonlinear (material, geometry and contact). Elastic-plastic finite element analyses are carried out among 15 species of 6 series under monotonic loads , in order to discuss the influence of parameters including thickness and width of end-plate, stiffening rib, friction coefficients, bolt diameter and bolt pretension forces. The main scopes of this paper include Elastic-plastic finite element analyses are carried out between monotonic loads in order to study the behavior of end-plate . The main result of this paper indicate: (1) Carrying capacity of joints mostly lies on the thickness of end-plate and the rib stiffeners, changing bolt pretension forces and friction coefficients and so on have little effect on it. Carrying capacity of connections and initial connection stiffness will be increasing, when the thickness of end-plate is increasing. Intercalating the rib stiffeners is better than adding the thickness of end-plate, when the thickness of end-plate is same.(2) changing bolt diameter , pretension forces and friction...