Semi-rigid Steel Beam-column Minor Axis Mechanical Properties Of The Connection

With the development of national economy, the steel frame structure because of its light weight and good seismic performance advantages be widely applied. Steel frame for the growing number of high-level analysis, The analysis must take into account the senior mechanical properties of beam-column joints, Design of beam-column connection is assumed to be completely rigid or articulated vision, but the actual project is completely rigid beam-column joints and ideals that is semi-rigid connections between articulated and rigid. Semi-rigid connections are divided into the strong axis and minor axis of semi-rigid connections semi-rigid connections, the current study of semi-rigid connections are mostly concentrated in the strong axis connections, but rather on the minor axis of less semi-rigid connections. end-plate connections using minor beams can improve the ductility of the structure, so that the structure under the earthquake has a certain energy dissipation capacity, and construction is convenient, fast, has obvious economic advantages. On the minor-axis semi-rigid end-plate connections at home and abroad scholars node force factors affecting the performance of some studies, Summed up the beam of extended end plate thickness calculating method, but is still in its infancy. To further study the minor axior end-plate Connections mechanical properties, this paper designed a new form of the minor axior end-plate connections, its theoretical analysis and numerical calculation, the principal tasks include:(1)To understand the research results of beam-column connections of steel frame structures, The design of new forms of the minor axis end-plate connections, to study its cross-section beams connected to stress, also strain and deformation characteristics of connection, furthermore examine mechanical properties and failure mechanism, and to determine the main factors of impacting anti-link bending properties.(2)Make theoretical analysis to the connection form and analysis methods of key performance indicators and derivate the formula. Put forward a comprehensive evaluation of construction proposals designed according to the theoretical results and proposed recommendations to design and construction.(3)Ansys software is built using a finite element model, considering the geometric nonlinearity, material nonlinearity and contact nonlinearity effects, concentrated loads on the design of the numerical calculation of the specimen The columns were collected from different web thickness, bolt diameter, minor axis plate semi-rigid connections parameter analysis of the mechanical properties of.Calculate the corresponding ultimate strength, and get moment-rotation curves to determine the impact of connection strength and stiffness of the main factors(4) Make recommendations for future relevant research according to the results of this study.