Combination Of Dual-channel Section Members Hysteretic Behavior Under Cyclic Bending Moment

Staggered truss system because of its economy and building layout flexibility andmany other advantages, more and more attention by the engineering community. Inorder to improve the mechanical properties of the structural system, in this paper, byimproving the energy dissipation capacity of fasting section chord, chord makes fastingfestival first formed plastic hinge or the occurrence of repairable damage, which can bea greater level of seismic energy consumption. Dual-channel composite sectionbecause of its material use reasonable overall stiffness, torsional performanceadvantage has been suggested to be applied to the fasting section chord. Domestic andinternational norms and procedures of this section forms the components under cyclicbending moment to make detailed provisions, so the combination of dual-channelsection members seismic performance of important engineering practice significance.In this paper, finite element analysis software ABAQUS combination of dualchannel section beam under cyclic bending moment hysteretic behavior of the finiteelement analysis, considering material and geometric the nonlinear C3D8R solidelements, the use of elastic-perfectly plastic material constitutive model and considerthe Bauschinger effect on the material properties, finite element model, the process ofanalysis does not consider the member initial imperfections and residual stress. Bycontrast with the existing test results to verify the correctness of the finite elementmodel.Hysteretic behavior influencing factors in order to study the combination ofdual-channel section members, we calculate the length of the fill plate spacing, webheight, web thickness, flange width and flange thickness and other geometric parameters for component lateral, dual-channel composite section members parametricanalysis under cyclic bending moment. Component hysteresis curves, skeleton curves,bearing capacity degradation, stiffness degradation, ductility factor and energydissipation factor analysis results were compared with analysis of the seismicperformance of the dual-channel composite section, draw the parameters ofdual-channel hysteretic behavior of composite section members were investigated.