Experimental and FEM analysis of reduced beam section moment endplate connections under cyclic loading

2014 ◽  
Vol 59 ◽  
pp. 320-329 ◽  
Author(s):  
C.E. Sofias ◽  
C.N. Kalfas ◽  
D.T. Pachoumis
Keyword(s):  
Cyclic Loading ◽  
Fem Analysis ◽  
Reduced Beam Section ◽  
Endplate Connections ◽  
Beam Section

Reduced beam section moment connections subjected to cyclic loading: Experimental analysis and FEM simulation

2009 ◽  
Vol 31 (1) ◽  
pp. 216-223 ◽  
Author(s):  
D.T. Pachoumis ◽  
E.G. Galoussis ◽  
C.N. Kalfas ◽  
A.D. Christitsas
Keyword(s):  
Cyclic Loading ◽  
Experimental Analysis ◽  
Fem Simulation ◽  
Moment Connections ◽  
Reduced Beam Section ◽  
Beam Section

Research on Seismic Behavior of Concrete Filled Square Tubular Joints with Reduced Beam Section under Cyclic Loading

2011 ◽  
Vol 243-249 ◽  
pp. 885-888
Author(s):  
Jia Xiang Chi ◽  
Shao Feng Nie ◽  
Tian Hua Zhou ◽  
Tao Sun
Keyword(s):  
Cyclic Loading ◽  
Bearing Capacity ◽  
Seismic Behavior ◽  
Plastic Hinge ◽  
Steel Beams ◽  
Nonlinear Fem ◽  
Reduced Beam Section ◽  
Weld Joints ◽  
Tubular Joints ◽  
Beam Section

The 3D nonlinear FEM models of concrete-filled square tubular column with internal diaphragms and steel beams with reduced beam section bolt-weld joints, involving geometric, materials and contact nonlinear were founded. The results of FEM are agreed to that of tests, so we can conclude that FEM in this paper is correct. Then the bearing capacity behavior of joints under cyclic loading are analyzed, including P-Δskeleton curves, P-Δ hysteretic curves, the dissipating energy ability and destruction form. The analysis results show that the plastic hinge in the joint with reduced beam section is removed to the reduced beam region. The joints that studied in this paper present excellent ductility and dissipating energy ability, therefore, all of them have a good seismic behavior.

scholarly journals Behavior of RBS Beams Reinforced by Stiffeners Subjected to Cyclic Loading

2018 ◽  
Vol 2018 ◽  
pp. 1-8
Author(s):  
Iori Kanao ◽  
Tianrui He ◽  
Zheng Yu ◽  
Kiyotaka Morisako
Keyword(s):  
Stress Concentration ◽  
Cyclic Loading ◽  
Numerical Study ◽  
Local Buckling ◽  
Lateral Buckling ◽  
Strength Deterioration ◽  
Reduced Beam Section ◽  
Beam Section ◽  
Lateral Bracing

This paper presents a numerical study of reduced beam section (RBS) beams with vertical and horizontal stiffeners. For RBS beams, it is speculated that strength deterioration will be caused by lateral buckling and local buckling. Supplemental lateral bracing (SLB) can prevent lateral buckling but not prevent local buckling in the RBS portion. In the previous research, the effect of vertical or horizontal stiffeners in RBS portion was shown to restrain local buckling of the RBS portion. But RBS with vertical stiffeners causes stress concentration at flange, and strength of RBS with horizontal stiffeners is lower than RBS with vertical stiffeners. In this paper, various patterns of placing stiffeners at the RBS portion are presented. The effect of vertical stiffeners and horizontal stiffeners arranged at the RBS portion is discussed based on length. It is confirmed that, without placing supplemental lateral bracing (SLB), vertical and horizontal stiffeners can delay the occurrence of local buckling and prevent stress concentration. Moreover, the strength can be sustained above 0.8Mp.

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