Bending–shear interaction in short coupling steel beams with reduced beam section

2016 ◽  
Vol 122 ◽  
pp. 190-197 ◽  
Author(s):  
Andrei Crisan ◽  
Dan Dubina
Keyword(s):  
Steel Beams ◽  
Reduced Beam Section ◽  
Beam Section

Study on Mechanical Behavior of Concrete-Filled Square Tubular Column and Bolt-Weld Steel Beam Joints with Reduced Beam Section

2010 ◽  
Vol 163-167 ◽  
pp. 620-623
Author(s):  
Shao Feng Nie ◽  
Tian Hua Zhou ◽  
Xiang Bin Liu ◽  
Xiu Mei Wang
Keyword(s):  
Plastic Hinge ◽  
3D Models ◽  
Steel Beams ◽  
Steel Beam ◽  
Initial Stiffness ◽  
Nonlinear Fem ◽  
Reduced Beam Section ◽  
Weld Joints ◽  
Beam Section ◽  
3D Solid

The 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 established. The 3D models of beam-to-column joints with internal diaphragms by 3D solid elements are founded. The bearing capacity behavior of joints under the monotonic loading are analyzed, including P-Δ curves, the stresses distribution of beam, the dissipating energy ability and destruction form. The analysis results show that the initial stiffness of joint with reduced beam section is close to that of non-reduced beam section joint. The bearing capacities of joints with reduced beam section are lower a little than that of non-reduced beam section joint. The plastic hinge in the joint with reduced beam section is removed to the reduced beam region.

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.

VULNERABILITY REDUCTION OF STEEL MOMENT RESISTING FRAMES BY MEANS OF REDUCED BEAM SECTION

2017 ◽  
Vol 4 (1) ◽  
Author(s):  
Rosario Montuori
Keyword(s):  
Seismic Load ◽  
Steel Moment Resisting Frames ◽  
Reduced Beam Section ◽  
Load Combination ◽  
Plastic Mechanism ◽  
Moment Resisting ◽  
Final Design ◽  
Mechanism Control ◽  
Beam Section ◽  
The Cost

The idea and the developed example of this work are based on the attainment of seismic performance improvement by simply trimming the flanges of the beam-ends. This strategy is to be applied by considering both the results of the theory of plastic mechanism control and the rules assuring the yielding of reduced beam sections (RBS) when seismic loads are applied to the structure. The results of such strategy are not always effective. In fact, there are several conditions that are to be satisfied in order to obtain an actual seismic improvement. Notwithstanding, when these conditions are satisfied, the cost of intervention can be considered as negligible. For this reason, this strategy can be very interesting and the rules applied in this work can clarify which is the effect of RBS taking into account all the parameters playing a role in the final design, i.e. existing column sections, resistance and ductility of existing connections, vertical loads acting in seismic load combination, amount of the reduction of beam section and its distance from the connection.

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