scholarly journals FAILURE MECHANISM OF RC BEAM UNDER REVERSED CYCLIC LOADING AFTER FLEXURAL YIELDlNG CAUSED BY LATERAL STRAIN ACCUMULATION IN PLASTIC HINGE REGION ON SLIP REGION

2000 ◽  
Vol 65 (538) ◽  
pp. 147-153 ◽  
Author(s):  
Hideyuki KINUGASA ◽  
Setsurou NOMURA
Keyword(s):  
Cyclic Loading ◽  
Failure Mechanism ◽  
Plastic Hinge ◽  
Hinge Region ◽  
Lateral Strain ◽  
Rc Beam ◽  
Strain Accumulation ◽  
Reversed Cyclic Loading ◽  
Slip Region ◽  
Reversed Cyclic

scholarly journals Behaviour of Hybrid Steel and FRP-Reinforced Concrete—ECC Composite Columns under Reversed Cyclic Loading

Sensors ◽  
2018 ◽  
Vol 18 (12) ◽  
pp. 4231 ◽  
Author(s):  
Fang Yuan ◽  
Liping Chen ◽  
Mengcheng Chen ◽  
Kaicheng Xu
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Plastic Hinge ◽  
Local Buckling ◽  
Hinge Region ◽  
Reinforced Concrete Column ◽  
Reversed Cyclic Loading ◽  
Reversed Cyclic ◽  
Frp Bars ◽  
Strength And Ductility

Fibre-reinforced polymer (FRP) is used widely in concrete structures owing to its noncorrosive, light-weight, nonmagnetic, and high tensile-strength properties. However, the FRP-reinforced concrete flexural member exhibits low ductility owing to the linear–elastic property of FRP reinforcement. Hybrid steel—FRP-reinforced concrete members exhibit good strength and ductility under flexure owing to the inelastic deformation of steel reinforcement. The existing investigations have focused on the mechanical behaviours of the hybrid steel—FRP-reinforced flexural members. Only few studies have been reported on the members under combined flexural and compression loads, such as columns, owing to the poor compressive behaviour of FRP bars. We herein propose a new type of hybrid steel—FRP-reinforced concrete—engineered cementitious composite (ECC) composite column with ECC applied to the plastic hinge region and tested it under reversed cyclic loading. The hybrid steel—FRP-reinforced concrete column was also tested for comparison. The influence of matrix type in the plastic hinge region on the failure mode, crack pattern, ultimate strength, ductility, and energy dissipation capacity, of the columns were evaluated systematically. We found that the substitution of concrete with ECC in the plastic hinge zone can prevent the local buckling of FRP bars efficiently, and subsequently improve the strength and ductility of the column substantially.

Axial Strain of Reinforced Concrete Columns

2010 ◽  
Vol 163-167 ◽  
pp. 1858-1861 ◽  
Author(s):  
Jong Wook Park ◽  
Sang A Cha ◽  
Ji Eun Kang ◽  
Mohamad Mansour ◽  
Jung Yoon Lee
Keyword(s):  
Reinforced Concrete ◽  
Cyclic Loading ◽  
Axial Force ◽  
Axial Strain ◽  
Plastic Hinge ◽  
Rc Columns ◽  
Reversed Cyclic Loading ◽  
Depth Ratio ◽  
Short Span ◽  
Reversed Cyclic

The reinforced concrete members are designed to fail in flexural member to behave ductilely. Also the failure doesn’t impose on columns but beams. But according to the plastic collapse mechanism, the plastic hinge potentially developed at the bottom of the RC column near the base of the structure after flexural yielding. These columns are generally dominated by shear which led to sudden failure in post yielding region because of its relatively short span-to-depth ratio, so special care is needed. The deformability of column with short span-to-depth ratio is small compared with larger span-to-depth ratio column under reversed cyclic loading. Therefore the design of these kinds of RC columns necessitates the prediction of both the shear strength after flexural yielding and corresponding ductility of such members. Ten RC columns with varying axial force ratio and shear reinforcement ratio were tested under monotonic and reversed cyclic loading. The most affectable factor to column behavior was the axial force. The result indicates that concrete contribution to shear resistance in the plastic hinge region and axial strain were decreased as axial force.

Behavior of HPFRC Connections for Precast Concrete Frames Under Reversed Cyclic Loading

PCI Journal ◽  
1998 ◽  
Vol 43 (6) ◽  
pp. 58-71 ◽  
Author(s):  
Rosa M. Vasconez ◽  
Antoine E. Naaman ◽  
James K. Wight
Keyword(s):  
Cyclic Loading ◽  
Precast Concrete ◽  
Concrete Frames ◽  
Reversed Cyclic Loading ◽  
Reversed Cyclic
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