Stiffness Matrix for Lshaped Columns Considering Shear Deformation Effects

Abstract:

In noninertial coordinate system,the Lshaped columns element stiffness matrix was derived from the study of loadbearing capacity of the Lshaped columns considering shear deformation effects.Using the matrix,a finite element program of Lshaped column frame structure internal forces analysis was compiled.A 3layer frame structure was calculated and a comparative study is made of the ANSYS calculation results and the calculation results of equivalent rectangular columns.Conclusions are drawn that shear deformation of the Lshaped column is greatly different from that of equivalent rectangular column;the torque of Lshaped column is influenced greatly whether considering the effects of reverse or not.