Experimental investigation on axial compression behavior of steel reinforced concrete columns with welded stirrups

2020 ◽  
Vol 208 ◽  
pp. 109924
Author(s):  
Lele Sun ◽  
Qijie Ma ◽  
Fei Han ◽  
Zexin Liu ◽  
Jinglong Li ◽  
...  
Keyword(s):  
Experimental Investigation ◽  
Reinforced Concrete ◽  
Axial Compression ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Compression Behavior ◽  
Steel Reinforced Concrete

Discussion on Limit Values of Axial Compression Ratio of Steel Reinforced Concrete Columns

2014 ◽  
Vol 578-579 ◽  
pp. 37-40 ◽  
Author(s):  
Yun Yun Li ◽  
Bao Sheng Yang
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Compression Ratio ◽  
Experimental Test ◽  
Concrete Columns ◽  
Reinforced Concrete Columns ◽  
Limit Values ◽  
Displacement Ductility ◽  
Steel Reinforced Concrete ◽  
Axial Compression Ratio

Through the experimental test, influences of axial compression ratio on seismic ductility of SRC columns are analyzed. The limit values of axial compression ratio of the columns are obtained, corresponding to different stirrup ratios at a certain level of displacement ductility.

scholarly journals Axial Compressive Performance of Steel-Reinforced Concrete Columns with Monosymmetric Cross-Shaped Steel

2021 ◽  
Vol 2021 ◽  
pp. 1-17
Author(s):  
Jipeng Yu ◽  
Tianhua Zhou ◽  
Yu Zhang ◽  
Yapeng Li
Keyword(s):  
Reinforced Concrete ◽  
Axial Compression ◽  
Concrete Strength ◽  
Concrete Columns ◽  
Eccentricity Ratio ◽  
Reinforced Concrete Columns ◽  
Steel Reinforced Concrete ◽  
Steel Ratio ◽  
Axial Capacity ◽  
Compressive Performance

The axial compressive performance of steel-reinforced concrete columns with monosymmetric cross-shaped steel (SRCC-MCS) was investigated in this study. Tests were conducted under pure axial compression to determine the effects of cross-shaped steel eccentricity ratio, concrete strength, steel ratio, and stirrup spacing on the resulting failure mode, load-strain curves, and load-displacement curves. The results indicated that increasing the cross-shaped steel eccentricity ratio reduced the axial capacity and ductility, increasing the concrete strength markedly enhanced the axial capacity but reduced the ductility, and increasing the steel ratio and reducing the stirrup spacing increased the axial capacity and ductility. Two calculation methods for determining the axial capacity of an SRCC-MCS under axial compression were proposed considering the effective lateral confinement pressures provided by the stirrups and monosymmetric cross-shaped steel. The proposed equations were compared with those in three extant codes and found to exhibit improved accuracy and consistency.

A combined experimental and numerical analysis on the seismic behavior of short reinforced concrete columns with different structural sizes and axial compression ratios

2017 ◽  
Vol 27 (9) ◽  
pp. 1416-1447 ◽  
Author(s):  
Liu Jin ◽  
Shuai Zhang ◽  
Dong Li ◽  
Haibin Xu ◽  
Xiuli Du ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Energy Dissipation ◽  
Axial Compression ◽  
Seismic Behavior ◽  
Load Capacity ◽  
Concrete Columns ◽  
Simulation Method ◽  
Reinforced Concrete Columns ◽  
Mesoscopic Simulation ◽  
Energy Dissipation Capacity

The results of an experimental program on eight short reinforced concrete columns having different structural sizes and axial compression ratios subjected to monotonic/cyclic lateral loading were reported. A 3D mesoscopic simulation method for the analysis of mechanical properties of reinforced concrete members was established, and then it was utilized as an important supplement and extension of the traditional experimental method. Lots of numerical trials, based on the restricted experimental results and the proposed 3D mesoscopic simulation method, were carried out to sufficiently evaluate the seismic performances of short reinforced concrete columns with different structural sizes and axial compression ratios. The test results indicate that (1) the failure pattern of reinforced concrete columns can be significantly affected by the shear-span ratio; (2) increasing the axial compression ratio could improve the load capacity of the reinforced concrete column, but the deformation capacity would be restricted and the failure mode would be more brittle, consequently the energy dissipation capacity could be deteriorated; and (3) the load capacity, the displacement ductility, and the energy dissipation capacity of the short reinforced concrete columns all exhibit clear size effect, namely, the size effect could significantly affect the seismic behavior of reinforced concrete columns.

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