The Study Of Hysteresis Behavior Of Semi-rigid Double Web Angle Steel Connections

Steel frames are structural systems which are used usually in the multi-story and high-rise structures,and beam-to-column connections are the major parts in the steel frames whose behavior directly affects the whole structural behavior in the loads,particularly in the dynamic load.Nowadays in the analysis and designs of the steel frames, beam-to-column connections are generally assumed to be either full-rigid connection or ideal pin.Although the assumption simplifies the analysis and designs of the steel frames,the actual structures are very difficult to get the two states for the factors such as manufacturing cost and constructions the two states are not rational in many conditions,even are erroneous.Many tests indicate that beam-to-column connections of the steel frames are always between full-rigid connections and ideal pin,that is to say,semi-rigid connections.So the semi-rigid connections are considered in the the analysis and designs of the steel frames in order to estimate the steel frames' actual behavior rationally.Hysteresis behavior of two types of semi-rigid double web angle steel connections is studied in my article in cyclic loads.Two types of semi-rigid double web angle steel connections: angles welded to beam web and bolted to column flange and angles bolted to the beam web and column flange.Some test speciments are selected.Similar cyclic load is applied to each test speciment using displacement control and the moment-rotation hysteresis loops and the failure modes of all the tests are presented which are compared with experimental results,so that we can find some value conclusion.