scholarly journals 2067) A Study on Collapse of Reinforced Concrete Columns under Lateral and Axial Loads : Relation of Lateral Force and Deflection under Several Axial Loads(Structure)

1960 ◽  
Vol 66.1 (0) ◽  
pp. 477-480
Author(s):  
Hajime Umemura ◽  
Tsuneo Miyatake
Keyword(s):  
Reinforced Concrete ◽  
Concrete Columns ◽  
Lateral Force ◽  
Axial Loads ◽  
Reinforced Concrete Columns

Study on Ultimate Bearing Capacity of Reinforced Concrete Columns Combined with FRP

2011 ◽  
Vol 94-96 ◽  
pp. 820-825
Author(s):  
Sai Wu ◽  
Jun Hai Zhao ◽  
Xue Ying Wei
Keyword(s):  
Reinforced Concrete ◽  
Bearing Capacity ◽  
Concrete Columns ◽  
Ultimate Bearing Capacity ◽  
Axial Loads ◽  
Strength Theory ◽  
Rc Columns ◽  
Reinforced Concrete Columns ◽  
Unified Strength Theory ◽  
Good Agreement

This paper based on the unified strength theory, analyzed the ultimate bearing capacity of the reinforced concrete columns combined with FRP under axial loads. First, analyzed the mechanical property of the RC columns combined with FRP. Second, based on the unified strength theory, deduced the three-direction compressive stress of the core concrete and got the unified formula for calculating the ultimate bearing capacity of RC columns combined with FRP. Last, compared the analytical results obtained in this paper with the relevant experimental data, good agreement can be found and it proved the good applicability of the formula. Comparing with other methods in calculating the ultimate bearing capacity of RC columns combined with FRP，this method is well-founded, so it has a significant value in analysis of RC columns combined with FRP.

scholarly journals Experimental Study of Hollow Slender Reinforced Concrete Columns Subjected to Eccentric Loads

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Alaa Mohammed Sahi ◽  
Mohammed Salih Abd Ali
Keyword(s):  
Reinforced Concrete ◽  
Ultimate Load ◽  
Rectangular Cross Section ◽  
Concrete Columns ◽  
Transverse Reinforcement ◽  
Rectangular Hole ◽  
Axial Loads ◽  
Reinforced Concrete Columns ◽  
Cfrp Sheet ◽  
Circular Holes

Abstract This paper was focused on the investigating on the behavior of hollow slender reinforced concrete columns subjected to the axial loads. A total of seven specimens were designed as slender reinforced columns and these were divided into two groups. Each column is symmetrical and had a rectangular cross section of 140 × 80 mm and 2000 mm in length. The column was reinforced by 6Ø6mm for longitudinal reinforcement and Ø6@6 mm bars were used for transverse reinforcement ties. The effect of strengthening by CFRP sheet on the buckling of column, eccentricity 20, 40 and 120 mm and opening shape were studied. The results showed that the strengthened columns by CFRP caused an in the ultimate load CFRP were 26.3 % and 76.3 % for strengthened lengths of L/4 and L respectively compared with the un-strengthened column. The ultimate load of columns is reduced with existing the load eccentricity and amount of losses in strength increased with increasing the eccentricity. Also, it was found the hollow columns having circular holes had better performance compared to hollow columns having rectangular hole

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