Axial Compression Ratio Limit of Regional Confined Concrete Columns

2013 ◽  
Vol 438-439 ◽  
pp. 501-504
Author(s):  
Jun Yan Lu ◽  
Wei Wang Pang ◽  
Shuai Chang
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Simulation Experiment ◽  
Concrete Columns ◽  
Hysteretic Behavior ◽  
Confined Concrete ◽  
Earthquake Simulation ◽  
Related Factors ◽  
Axial Compression Ratio ◽  
Ratio Limit

Through earthquake simulation experiment of nine regional confined concrete columns with different axial compression ratio, the bearing capacity and seismic behavior of regional confined concrete columns were studied in this paper. Considering the ductility, stiffness, energy-dissipation performance and related factors of regional confined concrete columns under different axial compression ratio, by comparative analysis of the hysteretic behavior of the specimens, the limit of axial compression ratio of regional confined concrete columns is proposed for seismic design.

Axial Compression Ratio Limit of L-Shaped Reinforced Concrete Columns with Different Limb Lengths

2013 ◽  
Vol 438-439 ◽  
pp. 522-525
Author(s):  
Fu Lai Qu ◽  
Pei Yuan Tian ◽  
Lu Yang Qi
Keyword(s):  
Reinforced Concrete ◽  
Numerical Method ◽  
Axial Compression ◽  
Compression Ratio ◽  
Concrete Columns ◽  
Neutral Axis ◽  
Reinforced Concrete Columns ◽  
Axial Compression Ratio ◽  
Minimum Value ◽  
Ratio Limit

Axial compression ratios of L-shaped columns with different directions of neutral axis were calculated by numerical method. It can be found that the axial compression ratio reaches the minimum value when neutral axis is parallel to the section edge and the shorter limb is compressed, the section scale has little influence on the axial compression ratio of L-shaped columns. On the base of analysis, axial compression ratios of L-shaped columns with different limb lengths are given out.

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.

Axial compression ratio limit for self-centering precast segmental hollow piers

2017 ◽  
Vol 18 (5) ◽  
pp. 668-679 ◽  
Author(s):  
Zhen Wang ◽  
Jing-Quan Wang ◽  
Tong-Xu Liu
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Axial Compression Ratio ◽  
Ratio Limit

Experimental Study on Seismic Performance of AAS-CFST Column

2014 ◽  
Vol 670-671 ◽  
pp. 344-348 ◽  
Author(s):  
Wen Feng Chen ◽  
Xiao Hui Yuan ◽  
Bin Li
Keyword(s):  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
Deformation Mode ◽  
Steel Tube ◽  
Hysteretic Behavior ◽  
Initial Stiffness ◽  
Skeleton Curve ◽  
Smooth Test ◽  
Axial Compression Ratio

Three model specimens of alkali-activated slag concrete filled steel tube (AAS-CFST) with different axial compression ratio and steel ratio were designed and tested in the present study. The seismic performance of the structures were evaluated by testing them with combined lateral constant compression and vertical cyclic loads. The structural performance, such as the testing observations, hysteretic behavior, skeleton curve, stiffness degradation, energy dissipation capacity and ductility performance was discussed in detailed. The results show that all the specimens’ damage were bending deformation mode, and the hysteretic curves are relatively smooth. Test data indicated that increased the axial compression ratio improved the load bearing capacity, initial stiffness.

Research on Hysteretic Behavior of the Concrete Filled Square CFRP-Steel Tubular (S-CFRP-CFST) Beam-Columns (II): Experimental Results and Analysis

2010 ◽  
Vol 163-167 ◽  
pp. 3575-3579
Author(s):  
Yuan Che ◽  
Qing Li Wang ◽  
Yong Bo Shao ◽  
Xu Zhang
Keyword(s):  
Axial Compression ◽  
Compression Ratio ◽  
Steel Tube ◽  
Experimental Results ◽  
Hysteretic Behavior ◽  
Transverse Strain ◽  
Beam Columns ◽  
Axial Compression Ratio ◽  
Opposite Action ◽  
Seismic Behaviors

Based on analysis of the hysteretic experimental results of the concrete filled square CFRP-steel tubular (S-CFRP-CFST) beam-columns, it shows that the steel tube and the CFRP material can work concurrently both in longitudinal and transverse directions, the longitudinal strain and the transverse strain at a same point have opposite action. Additionally, the deflection curves of all the specimens are close to half sinusoidal shape. Analysis indicates that there is some strength degradation. The axial compression ratio and strengthening factor of the longitudinal CFRP can enhance the strength and the stiffness of the members and they can also delay the stiffness degradation. However, they will decrease the accumulated energy dissipation of the members. The axial compression ratio is beneficial to seismic behaviors to some extent.

Study on the Sensitivity Factors Affecting the Anti-Seismic Performances of Steel Reinforced High-Strength Concrete Columns

2013 ◽  
Vol 405-408 ◽  
pp. 845-849
Author(s):  
Yun Yun Li ◽  
Bao Sheng Yang
Keyword(s):  
Axial Compression ◽  
Seismic Performance ◽  
Compression Ratio ◽  
High Strength Concrete ◽  
High Strength ◽  
Concrete Columns ◽  
Limit Values ◽  
Strength Concrete ◽  
Axial Compression Ratio ◽  
High Strength Concrete Columns

Through the experimental tests on 6 steel reinforced high-strength concrete columns under low cyclic horizontal loads, the influence on anti-seismic performance of the columns under different axial compression ratio, stirrup ratio and steel form is analyzed, and that anti-seismic performance of the columns is affected not only by axial compression ratio, but also by steel form. For steel reinforced high-strength concrete columns with different steel forms, the limit values of axial compression ratio may be adjusted, while the influence of stirrup ratio is not prominent.

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