Seismic behavior of RC cantilever beams under low cyclic loading and size effect on shear strength: An experimental characterization

2016 ◽  
Vol 122 ◽  
pp. 93-107 ◽  
Author(s):  
Liu Jin ◽  
Xiuli Du ◽  
Dong Li ◽  
Xiao Su
Keyword(s):  
Shear Strength ◽  
Cyclic Loading ◽  
Size Effect ◽  
Seismic Behavior ◽  
Cantilever Beams ◽  
Experimental Characterization ◽  
Low Cyclic Loading

Experimental Research on Seismic Behavior of RC Column with Different Concrete under Horizontal Low Cyclic Loading

2011 ◽  
Vol 374-377 ◽  
pp. 2041-2045
Author(s):  
Jing Wu ◽  
Fa Zhou Wang ◽  
Yue Li ◽  
Wen Yang ◽  
Shu Guang Hu
Keyword(s):  
Cyclic Loading ◽  
Seismic Behavior ◽  
Lightweight Concrete ◽  
Concrete Strength ◽  
High Strength ◽  
Frame Structure ◽  
Dead Weight ◽  
Elastic Plastic ◽  
Rc Column ◽  
Low Cyclic Loading

On the premise of maintaining certain vertical bearing capacity, the frame structure dissipates seismic energy by elastic-plastic deformation in elastic-plastic stage of earthquake action. Using lightweight concrete in structure not only can reduce the its dead weight, decrease the earthquake power; also meet the concrete strength, stiffness and elastic modulus requirements of important structure, so as to improve its energy dissipation capacity. This paper researched the effect of concrete materials, including or such as C60 high strength Lightweight concrete (HSLC), high strength concrete (HSC) and high strength Light weight aggregate concrete (HSLAC), on the seismic behavior of RC column under horizontal low cyclic loading, respectively and the match relationship between concrete and steel reinforcement cage was analyzed.

Effect of Stirrup Ratio on Seismic Behavior of Cross-Shaped Columns with HRB500 Reinforcement

2012 ◽  
Vol 166-169 ◽  
pp. 2605-2608
Author(s):  
Yan Yan Li ◽  
Xian Rong ◽  
Jian Xin Zhang
Keyword(s):  
Cyclic Loading ◽  
Great Improvement ◽  
Seismic Behavior ◽  
Displacement Ductility ◽  
Accumulated Damage ◽  
Hysteretic Performance ◽  
Result Show ◽  
Low Cyclic Loading ◽  
Load Displacement ◽  
Damage Characteristic

Three cross-shaped columns were tested under low cyclic loading in order to research the effect of stirrup ratio on seismic behavior of cross-shaped columns with HRB500 reinforcement. The damage characteristic, hysteretic curve, load, displacement, ductility and accumulated damage were analyzed. The result show the damage characteristic is improved, the hysteretic performance has great improvement and the ductility of cross-shaped columns is enhanced with the increase of volume stirrup ratio. Besides, the degree of accumulated damage of specially shaped columns with HRB500 reinforcement can also be lighten.

Experimental Study on Shear Capacity of Broad-Limb Special-Shaped Columns

2011 ◽  
Vol 250-253 ◽  
pp. 2412-2417 ◽  
Author(s):  
Tie Cheng Wang ◽  
Xiang Shang Chen
Keyword(s):  
Experimental Study ◽  
Shear Strength ◽  
Cyclic Loading ◽  
Shear Capacity ◽  
Thickness Ratio ◽  
Skeleton Curve ◽  
Low Cyclic Loading ◽  
Current Code

The experimental study on shear capacity of 24 broad-limb special-shaped columns subjected to low cyclic loading were executed. The characteristic of hysteretic curve and skeleton curve were analyzed. The influences of the lateral bevel loads and the limb’s width-thickness ratio on the shear strength of the T-shaped and L-shaped broad-limb special-shaped columns were studied. The application of the shear formula in the current code for the broad-limb special-shaped columns was verified. It is shown that using the formula to calculate the shear strength of broad-limb special-shaped columns is safe from the results.

Analysis on the Seismic Behavior of Extended End-Plate Connections of Steel Frame Structure

2012 ◽  
Vol 193-194 ◽  
pp. 1405-1413 ◽  
Author(s):  
Zhu Ling Yan ◽  
Bao Long Cui ◽  
Ke Zhang
Keyword(s):  
Finite Element ◽  
Cyclic Loading ◽  
Seismic Performance ◽  
Seismic Behavior ◽  
Frame Structure ◽  
End Plate ◽  
Rigid Connection ◽  
Extended End Plate ◽  
Plate Connections ◽  
Steel Frame Structure

This paper conducts analysis on beam-column extended end-plate semi-rigid connection joint concerning monotonic loading and cyclic loading of finite element through ANSYS program, mainly discussed the influence of parameters such as the form of end plate stiffening rib on anti-seismic performance of joint.

scholarly journals Microstructure and mechanical properties of an ultrasonic spot welded aluminum alloy: the effect of welding energy

2021 ◽  
Author(s):  
He Peng ◽  
Daolun Chen ◽  
Xianquan Jiang
Keyword(s):  
Shear Strength ◽  
Aluminum Alloy ◽  
Cyclic Loading ◽  
Crack Growth ◽  
Failure Mode ◽  
Spot Welding ◽  
Energy Levels ◽  
Lap Shear Strength ◽  
Pull Out ◽  
Lap Shear

The aim of this study is to evaluate the microstructures, tensile lap shear strength, and fatigue resistance of 6022-T43 aluminum alloy joints welded via a solid-state welding technique–ultrasonic spot welding (USW)–at different energy levels. An ultra-fine necklace-like equiaxed grain structure is observed along the weld line due to the occurrence of dynamic crystallization, with smaller grain sizes at lower levels of welding energy. The tensile lap shear strength, failure energy, and critical stress intensity of the welded joints first increase, reach their maximum values, and then decrease with increasing welding energy. The tensile lap shear failure mode changes from interfacial fracture at lower energy levels, to nugget pull-out at intermediate optimal energy levels, and to transverse through-thickness (TTT) crack growth at higher energy levels. The fatigue life is longer for the joints welded at an energy of 1400 J than 2000 J at higher cyclic loading levels. The fatigue failure mode changes from nugget pull-out to TTT crack growth with decreasing cyclic loading for the joints welded at 1400 J, while TTT crack growth mode remains at all cyclic loading levels for the joints welded at 2000 J. Fatigue crack basically initiates from the nugget edge, and propagates with “river-flow” patterns and characteristic fatigue striations. Keywords: aluminum alloy; ultrasonic spot welding; EBSD; microstructure; tensile strength; fatigue

Sign in / Sign up

Export Citation Format

Share Document