Experimental Research on Ductility and Bearing Capacity of T-Shaped Columns with HRB500 Reinforcement

2012 ◽  
Vol 166-169 ◽  
pp. 1450-1453
Author(s):  
Yan Yan Li ◽  
Jin Li Qiao ◽  
Jian Xin Zhang
Keyword(s):  
Bearing Capacity ◽  
Seismic Design ◽  
Deformation Behavior ◽  
Ultimate Load ◽  
Hysteretic Behavior ◽  
Displacement Ductility ◽  
Yield Load ◽  
Curvature Ductility ◽  
Low Cyclic Loading ◽  
Damage Characteristic

In order to research the effect of stirrup ratio on ductility and bearing capacity of T-shaped columns with HRB500 reinforcement, three T-shaped columns with HRB500 reinforcement were tested under low cyclic loading. The damage characteristic, hysteretic curve, yield load, ultimate load, displacement ductility and curvature ductility were analyzed. It is shown that the T-shaped column with HRB500 reinforcement have excellent ductility, higher bearing capacity and better deformation behavior, which can meet the requirement of anti-seismic design. With the increase of stirrup ratio, the curvature ductility of T-shaped columns with HRB500 reinforcement increases and the hysteretic behavior improves.

Effect of Axial Compression Ratio on Ductility and Bearing Capacity of Specially Shaped Columns with HRB500 Reinforcement

2012 ◽  
Vol 204-208 ◽  
pp. 1066-1069
Author(s):  
Yan Jun Li ◽  
Ping Liu
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
Ultimate Load ◽  
Deformation Capacity ◽  
Displacement Ductility ◽  
Yield Load ◽  
Axial Compression Ratio ◽  
Low Cyclic Loading ◽  
Specially Shaped Column

Four specially shaped columns with HRB500 reinforcement were tested under low cyclic loading. The hysteretic curve, yield load, ultimate load, displacement ductility and rigidity degradation were compared in order to research the effect of axial compression ratio on ductility and bearing capacity of specially shaped column with HRB500 reinforcement. It is shown that the axial compression ratio has greater influence on ductility and bearing capacity. With the increase of axial compression ratio, the bearing capacity of HRB500 reinforcement concrete specially shaped column can be enhanced while the deformation capacity becomes worse. The hysteretic characteristic of specially shaped columns with HRB500 reinforcement is improved and the stiffness degeneration becomes slow with the decrease of axial compression ratio.

Experimental Research on Ductility and Bearing Capacity of Prestressed High Strength Concrete Pipe Piles

2013 ◽  
Vol 405-408 ◽  
pp. 2511-2514
Author(s):  
Xian Rong ◽  
Jian Xin Zhang ◽  
Yan Yan Li ◽  
Yan Feng Chen
Keyword(s):  
Bearing Capacity ◽  
Deformation Behavior ◽  
High Strength Concrete ◽  
Steel Fiber ◽  
High Strength ◽  
Hysteretic Behavior ◽  
Strength Concrete ◽  
Concrete Pipe ◽  
Low Cyclic Loading ◽  
Damage Characteristic

Based on the low cyclic loading experiments on prestressed high strength concrete pipe piles, in which one of them was reinforced by steel fiber, another stirrup ratio, the other was not reinforced, the authors compare the results in terms of damage characteristic, hysteretic curve, bearing capacity, displacement and ductility. It is shown that the bearing capacity and ductility of prestressed high strength concrete pipe piles reinforced by steel fiber increases. With the increase of stirrup ratio, the hysteretic behavior and the deformation behavior of prestressed high strength concrete pipe piles improves.

Experimental Research on Hysteretic Behavior of L-Shaped Columns with HRB500 Reinforcement

2013 ◽  
Vol 275-277 ◽  
pp. 947-950
Author(s):  
Kun Liu ◽  
Jing Xian Tian ◽  
Yan Yan Li
Keyword(s):  
Energy Dissipation ◽  
Cyclic Loading ◽  
Experimental Research ◽  
Ultimate Load ◽  
Hysteretic Behavior ◽  
Energy Dissipation Capacity ◽  
Low Cyclic Loading ◽  
Damage Characteristic

Three L-shaped columns with HRB500 reinforcement were tested under low cyclic loading. The effect of stirrup ratios on damage characteristic, hysteretic characteristic, rigidity degradation and energy dissipation capacity was analyzed to research the hysteretic behavior of L-shaped columns with HRB500 reinforcement. The result shows that the damage characteristic and the hysteretic characteristic of L-shaped columns with HRB500 reinforcement are improved with the increase of stirrup ratios. The energy dissipation capacity of L-shaped column was also enhanced after ultimate load with the increase of stirrup ratios.

Experimental Research on Seismic Behavior of Interior Joints of Specially Shaped Columns Reinforced by Fiber

2011 ◽  
Vol 94-96 ◽  
pp. 551-555 ◽  
Author(s):  
Xian Rong ◽  
Jian Xin Zhang ◽  
Yan Yan Li
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Seismic Behavior ◽  
Steel Fiber ◽  
Polypropylene Fiber ◽  
The Core ◽  
Low Cyclic Loading ◽  
The Moment ◽  
Specially Shaped Column ◽  
Damage Characteristic

Based on the low cyclic loading experiments on three interior joints with specially shaped columns, in which one of them was reinforced by polypropylene fiber in the core zone of joint, another steel fiber, the other was not reinforced, the authors compare the results in terms of damage characteristic, bearing capacity, displacement and ductility, hysteretic curve of the moment-rotation, rigidity degradation and energy dissipation. It is shown that seismic behavior of specially shaped column interior joints reinforced by fiber is improved significantly. The interior joint of specially shaped column reinforced by polypropylene fiber has a better damage characteristic and energy dissipation while that by steel fiber shows a higher yield load and bearing capacity.

An Investigation of Strength and Deformation Behavior on Shale Ceramsite Concrete Shear Walls

2012 ◽  
Vol 204-208 ◽  
pp. 3835-3842 ◽  
Author(s):  
Wei Chao Chen ◽  
Wei Jun Yang ◽  
Tong Wang
Keyword(s):  
Deformation Behavior ◽  
Shear Walls ◽  
Static Tests ◽  
Displacement Ductility ◽  
Curvature Ductility ◽  
Resistance Moment ◽  
Deformation Behaviors ◽  
Strength And Deformation ◽  
Analytical Result ◽  
Ductility Ratio

With cyclic quasi-static tests, the strength and deformation behaviors of five shale ceramsite concrete shear walls specimens were studied, the effect of height-width ratios and reinforcement ratios of shear walls were considered. The failure feature, strength, deformation behaviors of shale ceramsite concrete shear walls were analyzed after the test. Analytical result indicates that, the shale ceramsite concrete shear walls have good strength and deformation behavior and it can meet the requirements of the structure seismic. The calculation formula of resistance moment and the relationship between curvature ductility ratio and displacement ductility ratio were established for shale ceramsite concrete shear walls and the calculate results were compared with test results.

Study on Flexural Performance of RC Beams Strengthened with Bonded Prestressed CFL

2014 ◽  
Vol 578-579 ◽  
pp. 1338-1342
Author(s):  
Jin Lin Huang ◽  
Pei Yan Huang ◽  
Jin Hui Xie
Keyword(s):  
Bearing Capacity ◽  
Experimental Research ◽  
Ultimate Load ◽  
Static Load ◽  
Rc Beam ◽  
Rc Beams ◽  
Load Bearing ◽  
Yield Load ◽  
Flexural Performance ◽  
Flexural Bearing Capacity

Based on experimental research and calculation theory of flexural bearing capacity, a method for calculating the ultimate load bearing of normal section member strengthened with prestressed CFL is proposed. Static load experimental results of two beams show that when prestress level is 20%, the cracking load and yield load of RC beams strengthened with prestressed CFL are 37.5% and 39.3% respectively. It is larger than that of RC beam strengthened with nonprestressed CFL.

Comparing Hysteretic Behavior of Flexible Piers with Different Stirrup Ratio and Slenderness Ratio

2011 ◽  
Vol 261-263 ◽  
pp. 576-580
Author(s):  
Xiao Jing Yuan ◽  
Fan Liu
Keyword(s):  
Energy Dissipation ◽  
Bearing Capacity ◽  
Slenderness Ratio ◽  
Experimental Studies ◽  
Bridge Engineering ◽  
Hysteretic Behavior ◽  
Hysteresis Curve ◽  
Skeleton Curve ◽  
Displacement Ductility ◽  
Ductility Factor

Flexible piers have been widely used in bridge engineering due to its superior ductility. The stirrup ratio and slenderness ratio were deemed to have a most important impact on hysteretic behavior of them. Five flexible piers were made under static vertical loads and low cyclic horizontal reversed loads. The process of test was introduced and failure mechanism, hysteretic behavior, skeleton curve, ductility, energy dissipation capacity, and stiffness degeneration of flexible piers were analyzed. Experimental studies show that (1) Failure mode of specimen is bending failure and their ductility factor falls between 4.15 and 6.30; (2) displacement ductility factor improves with increasing of the stirrup ratio. Stirrup could greatly improve the capacity on ductility and energy dissipation, while it has little impact on the bearing capacity; (3) ultimate bearing capacity decline with the increase of slenderness ratio, however, when the slenderness ratio member is larger, the hysteresis curve is fuller and energy-dissipation is better.

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 Research on Seismic Performance of PHC Pipe Piles

2015 ◽  
Vol 744-746 ◽  
pp. 100-104
Author(s):  
Yi Fan Li ◽  
Ping Liu ◽  
Jian Xin Zhang
Keyword(s):  
Bearing Capacity ◽  
High Strength ◽  
Hysteretic Behavior ◽  
Concrete Pipe ◽  
Steel Bars ◽  
Two Measures ◽  
Energy Dissipation Capacity ◽  
Low Cyclic Loading ◽  
Prestressed Reinforcement ◽  
Research Show

Four prestressed high strength concrete pipe piles were tested under low cyclic loading, the failure characteristic, bearing capacity, ductility performance and hysteretic characteristic were analyzed. The research show that the bearing capacity and the ductility performance could be improved a lot by two measures of adding non-prestressed reinforcement and filling the pile core. The hysteresis loop of pile specimen adding non-prestressed steel bars is fuller, the energy dissipation capacity is larger, and the hysteretic behavior is better.

Analysis on the Mechanical Properties of Connections on Cold-Formed Square Steel Column and Beam

2010 ◽  
Vol 163-167 ◽  
pp. 676-680 ◽  
Author(s):  
Yong Yao ◽  
Yun Peng Chu
Keyword(s):  
Mechanical Properties ◽  
Bearing Capacity ◽  
Ultimate Load ◽  
Plastic Hinge ◽  
Steel Structure ◽  
Initial Stiffness ◽  
Yield Load ◽  
Finite Element Software ◽  
Steel Column ◽  
Welding Joints

The profiled steel structure of cold-formed square steel tubular has better seismic behavior and is suitable for reconstruction in seismic disastrous area. The joint is the key to the design of structure, so it needs further research on the mechanical properties. Using finite element software ANSYS to analysis two kinds of welding joints which under monotonic loading, the results show that: (1)The ultimate bearing capacity and yield load of improved joints greatly enhanced compared to conventional joints, and the plastic hinge moved to outward from the beam and column interface. (2)Until loading to the yield load, the improved joints has longer yield platform and better ductility. (3)The axial compression ratio has stronger effect on the conventional joints than improved joints on bearing capacity and initial stiffness.(4)Until loading to the ultimate load, degree of stress concentration on the improved joints is less than conventional joints, and the plastic hinge moved to outward, avoid brittle fracture of the joint.

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