Seismic behavior of circular fly ash concrete columns reinforced with low-bond high-strength steel rebar

Structures ◽  
2020 ◽  
Vol 27 ◽  
pp. 1335-1357
Author(s):  
J.H. Wang ◽  
Y.P. Sun ◽  
T. Takeuchi ◽  
T. Koyama
Keyword(s):  
Fly Ash ◽  
High Strength Steel ◽  
Seismic Behavior ◽  
High Strength ◽  
Concrete Columns ◽  
Fly Ash Concrete ◽  
Steel Rebar

Behavior of high strength fly ash concrete columns under fire conditions

2012 ◽  
Vol 46 (5) ◽  
pp. 857-867 ◽  
Author(s):  
Wasim Khaliq ◽  
Venkatesh Kodur
Keyword(s):  
Fly Ash ◽  
High Strength ◽  
Concrete Columns ◽  
Fly Ash Concrete ◽  
Fire Conditions

scholarly journals Research on Concrete Columns Reinforced with New Developed High-Strength Steel under Eccentric Loading

2019 ◽  
Author(s):  
Yonghui Hou ◽  
Shuangyin Cao ◽  
Xiangyong Ni ◽  
Yizhu Li
Keyword(s):  
Yield Strength ◽  
Bearing Capacity ◽  
High Strength Steel ◽  
High Strength ◽  
Concrete Columns ◽  
Lower Amount ◽  
Transverse Reinforcement ◽  
Longitudinal Reinforcement ◽  
Small Eccentricity ◽  
Failure Patterns

The use of new developed high-strength steel in concrete members can reduce steel bars congestion and construction costs. This research aims to study the behavior of concrete columns reinforced with new developed high-strength steel under eccentric loading. Ten reinforced concrete columns were fabricated and tested. The test variables are transverse reinforcement amount and yield strength, eccentricity, and longitudinal reinforcement yield strength. The failure patterns are compression and tensile failure for columns subjected to small eccentricity and large eccentricity, respectively. The same level of post-peak deformability and ductility only can be obtained with lower amount of transverse reinforcement when high-strength transverse reinforcements are used in columns subjected to small eccentricity. The high-strength longitudinal reinforcement can improve bearing capacity and post-peak deformability of concrete columns. Besides, three different equivalent rectangular stress block (ERSB) parameters in predicting bearing capacity of columns with high-strength steel were discussed based on test and simulated results. It is concluded that the Code of GB 50010-2010 overestimates the bearing capacity of columns with high-strength steel, whereas bearing capacities computed using Codes of ACI 318-14 and CSA A23.3-04 agree well with test results.

Study on the Behaviors of Steel Reinforced Concrete Cloumns

2011 ◽  
Vol 368-373 ◽  
pp. 248-252
Author(s):  
Bao Sheng Yang ◽  
Yun Yun Li
Keyword(s):  
Bearing Capacity ◽  
Axial Compression ◽  
Compression Ratio ◽  
High Strength Concrete ◽  
Seismic Behavior ◽  
Slenderness Ratio ◽  
High Strength ◽  
Concrete Columns ◽  
Axial Compression Ratio ◽  
High Strength Concrete Columns

The influence on columns behaviors of slenderness ratio are analyzed, and the influence on columns’ anti-seismic behavior of axial compression ratio, stirrup ratio and steel form are analyzed through the test on bearing capacity and level load of low cycle reverse of steel reinforced high-strength concrete columns. The bearing capacity of the long columns reduces along with the slenderness ratio increasing and augments along with concrete strength increasing. Probability of suddenly destruct increases along with the column slenderness ratio augmenting through the test. In addition, anti-seismic behavior of columns are effected not only axial compression ratio, but also steel form. Axial compression coefficien of the steel reinforced high-strength concrete columns with different steel form may be adjusted, however, the influence of stirrup ratio is very little on anti-seismic behavior of columns.

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