scholarly journals Analytical Study of Single Skin Steel Tube Confined Reinforced Concrete Columns Exposed to Different Fire Conditions

2020 ◽  
Vol V9 (06) ◽  
Author(s):  
Anjaly Pradeep ◽  
Keyword(s):  
Reinforced Concrete ◽  
Analytical Study ◽  
Concrete Columns ◽  
Steel Tube ◽  
Reinforced Concrete Columns ◽  
Fire Conditions

Experimental Study on Seismic Performance of RC Composite Core Walls with Steel Tube-Reinforced Concrete Columns and Concealed Steel Trusses under Eccentric Horizontal Loading

2010 ◽  
Vol 163-167 ◽  
pp. 2267-2273 ◽  
Author(s):  
Hong Ying Dong ◽  
Wan Lin Cao ◽  
Jian Wei Zhang
Keyword(s):  
Reinforced Concrete ◽  
Seismic Performance ◽  
Load Capacity ◽  
Concrete Columns ◽  
Steel Tube ◽  
Reinforced Concrete Columns ◽  
Deterioration Process ◽  
Combined Action ◽  
Process Energy ◽  
Steel Trusses

Two 1/6 scale core walls, including one RC core wall with steel tube-reinforced concrete columns and concealed steel trusses and one conventional RC core wall, were tested under eccentric horizontal cyclic loading. The load-capacity, ductility, hysteresis characteristics, stiffness, stiffness deterioration process, energy dissipation and damage characteristics of the two specimens were compared and discussed in this paper. It shows that the seismic performance of the RC core walls under combined action could be improved by setting the concealed steel trusses in the walls and using the steel tube-reinforced concrete columns as the boundary elements.

scholarly journals The use of Grade 380 steel for transverse confining reinforcement in columns

1987 ◽  
Vol 20 (2) ◽  
pp. 99-115
Author(s):  
F. A. Zahn ◽  
R. Park ◽  
M. J. N. Priestley
Keyword(s):  
Reinforced Concrete ◽  
Axial Load ◽  
Analytical Study ◽  
Concrete Columns ◽  
Lateral Loading ◽  
Transverse Reinforcement ◽  
Reinforced Concrete Columns ◽  
Ductility Factor ◽  
Strain Behaviour ◽  
Curvature Ductility

The results of recent experimental and analytical studies of the stress-strain behaviour of concrete confined by New Zealand manufactured Grade 275 or Grade 380 reinforcing steel are presented. First, the behaviour of three pairs of concentrically loaded reinforced concrete columns containing spirals from either Grade
275 or Grade 380 steel are compared, including the stage at which spiral fracture occurred. Second, the results of tests on four reinforced concrete columns containing Grade 380 spiral or rectangular hoop reinforcement and subjected to combined axial
load and cyclic lateral loading are reported. An analytical
study which was conducted to determine the available curvature ductility factor at the stage of fracture of the transverse reinforcement is described. The results are used to give a guideline for the safe use of Grade 380 steel as transverse confining reinforcement.

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