FEM Analysis on Seismic Behavior of Hybrid Coupled Wall System with Steel Boundary Elements

2012 ◽  
Vol 166-169 ◽  
pp. 98-103
Author(s):  
Yun Shi ◽  
Ming Zhou Su ◽  
An Liang Song
Keyword(s):  
Seismic Behavior ◽  
Plastic Hinge ◽  
Fem Analysis ◽  
Boundary Elements ◽  
Hysteretic Behavior ◽  
Steel Beams ◽  
Fem Model ◽  
Coupled Wall ◽  
3D Solid ◽  
Wall System

A nonlinear 3D solid model of hybrid coupled wall system with steel boundary elements has been founded by using FEM software ABAQUS to study its hysteretic behavior under cyclic loading, which considering the geometric large deformation and materials nonlinearity. To verify the efficiency of the model, two specimens with various coupling ratios of 30% and 45% are analyzed, and the results of analysis are compared with test ones. As the bearing capacities of both agree well in different loading stages, so the FEM model has enough accuracy and could be used to study the seismic behavior of hybrid coupled wall system with steel boundary elements. In addition, the results show that this new system dissipates energy by shear deformation of steel beams along and plastic hinge deformation at the bottom of wall, so it has better seismic performance.

Hysteretic Behavior of Reinforced Concrete Coupling Beams with Diagonal Headed-Bars

2013 ◽  
Vol 351-352 ◽  
pp. 734-737
Author(s):  
Wan Shin Park ◽  
Young Soo Chun ◽  
Hyun Do Yun ◽  
Soo Yeon Seo ◽  
Jin Kyu Song ◽  
...  
Keyword(s):  
Seismic Behavior ◽  
Shear Wall ◽  
Hysteretic Behavior ◽  
Test Results ◽  
Coupling Beam ◽  
Reinforcing Bars ◽  
Coupling Beams ◽  
Coupled Shear Wall ◽  
Test Variable ◽  
Wall System

This paper addresses the seismic behavior of coupling beams with headed reinforcing bars in coupled shear wall system. Test variable included the replacement ratios of headed reinforcing bars. The results show that Specimen HB 50 exhibits a better stable behavior in comparison with Specimens Specimen CON and Specimen HB 30. Test results showed that the amount of diagonal reinforcing bars in the coupling beam may be reduced when headed reinforcing bars are utilized.

Seismic Performance on Dumbbell-Shape Connection between Steel Beams and Rectangular Concrete-Filled Tubular Column

2010 ◽  
Vol 163-167 ◽  
pp. 4546-4554
Author(s):  
Xiu Li Wang ◽  
Qiong Li
Keyword(s):  
Plastic Hinge ◽  
Steel Tube ◽  
Hysteretic Behavior ◽  
Steel Beams ◽  
Strength Deterioration ◽  
Design Concepts ◽  
Weak Beam ◽  
Force Transfer ◽  
Connection Type ◽  
Force Transfer Mechanism

Referancing to the connection characteristic and mechanical behavior as well as the defects in application of joints on concrete-filled steel tube between columns and beams, a new connection type of steel beam throughout joints model is proposed. The inner force transfer mechanism and stress distribution situation of the joint under the monotonous load and hysteretic behavior, ductility, energy dissipation under cyclically lateral load are analyzed using the software ANSYS. The result indicated that the stress of steel pipe is reduced effectively when continious web plate joint is used. Meanwhile, the rigidity of the joint is enhancedand. It is also accord with the seismic design concepts, that is “strong column-weak beam“. During this process of the jiont working, plastic hinge occurs out of joint area on the beam. The hysteretic curves of all the specimens are of a plump shuttle shape .The curves don’t show strength deterioration and stiffness degradation obviously. All these show that this type of joint is effective.

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.

Study on shear performance of the connection with external stiffening ring between square steel tubular column and unequal-depth steel beams

2020 ◽  
pp. 136943322098166
Author(s):  
Shuhao Yin ◽  
Bin Rong ◽  
Lei Wang ◽  
Yiliang Sun ◽  
Wuchen Zhang ◽  
...  
Keyword(s):  
Failure Modes ◽  
Plastic Hinge ◽  
Steel Tube ◽  
Nonlinear Finite Element ◽  
Steel Beams ◽  
Finite Element Models ◽  
Test Results ◽  
Panel Zone ◽  
Load Paths ◽  
Shear Performance

This paper studies the shear performance of the connection with the external stiffening ring between the square steel tubular column and unequal-depth steel beams. Two specimens of interior column connections were tested under low cyclic loading. The deformation characteristics and failure modes exhibited by the test phenomena can be summarized as: (1) two specimens all exhibited shear deformation in steel tube web of the panel zone and (2) weld fracture in the panel zone and plastic hinge failure at beam end were observed. Besides, load-displacement behaviors and strain distributions have been also discussed. The nonlinear finite element models were developed to verify the test results. Comparative analyses of the bearing capacity, failure mode, and load-paths between the equal-depth and unequal-depth beam models have been carried out.

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