Table of Experimental Studies on Load Transfer in CFT Systems
General Information
Reference | Experiment Synopsis | Number of Tests | Loading Method | Results Reported | Main Parameters | Comments |
---|---|---|---|---|---|---|
Kilpatrick and Rangan 1999 | Bond tests of circular CFT columns and beams having various interface conditions including maximum bond, partial bond and minimum bond. HT tubes were also tested under axial load |
|
|
|
|
|
Morishita and Tomii 1982 | Cyclic push-out tests of square CFTs |
24 |
|
|
|
|
Mouli and Khelafi 2007 | Push-out test of rectangular CFTs with normal weight and light weight concrete |
4 Rectangular Hollow Section CFTs |
Tested in Standard Compression machine |
P vs. slip |
|
Bond strength and squash load tested |
Parsley, Yura, and Jirsa 2000 | Push-out test of rectangular CFTs with and without shear tab connections supporting the steel tube |
8 |
|
|
|
|
Roeder, Cameron, and Brown 1999 | Push-out tests of circular CFTs filled with concrete having moderate or little shrinkage potential |
20 |
|
|
|
|
Shakir-Khalil 1993 | Push-out tests of square and circular CFTs with shear connectors Push-out tests of rectangular, square and, circular CFTs with dry or oiled interface |
56 (30 square, 26 circular) 40 (16 rectangular, 12 square, 12 circular) |
|
|
|
|
Shakir-Khalil and Hassan 1994 | Push-out test of rectangular CFTs |
52 |
Monotonic axial loading of the concrete alone at the top while the column supported on the steel tube at the bottom |
|
|
|
Tomii, Yoshimura, and Morishita 1980 | Push-out tests of circular CFTs |
91 |
Axial load applied at the top on the concrete alone and the column supported on the steel tube at the bottom |
|
|
|
Virdi and Dowling 1980 | Push-out tests of circular CFTs |
91 |
Axial load applied at the top on the concrete alone and the column supported on the steel tube at the bottom |
|
|
Specimen Information
Reference | Length (L) (in) | Interface Length (in) | Bond Strength (fb) (psi) | Shear Connectors |
---|---|---|---|---|
Kilpatrick and Rangan 1999 | 13.78 (stub) 40.83 (short) 76.85 (slender) 82.68 (beam) |
13.78 (stub) 40.83 (short) 76.85 (slender) 82.68 (beam) |
1.5-114.0 |
|
Morishita and Tomii 1982 | 35 |
29 |
21.3-49.8 |
none |
Mouli and Khelafi 2007 | 21.65 |
Fy = 49.3-52.65 ksi |
117.48-121.83 (NWC), 60.92-62.37 (LWC) |
none |
Parsley, Yura, and Jirsa 2000 | 48-60 |
47-59 |
27.0-71.0 |
none |
Roeder, Cameron, and Brown 1999 | 46 |
41.5 |
N.A. |
none |
Shakir-Khalil 1993 | 17.7 9.8, 17.7, 25.6 |
15.8 7.9, 15.7, 23.6 |
63.8, 120.4 29.0-580.2 |
|
Shakir-Khalil and Hassan 1994 | 17.72 |
15.74 |
28.4-77.3 |
|
Tomii, Yoshimura, and Morishita 1980 | 28.94 |
29.53 |
28.5-56.9 (circular) 21.3-42.7 (square and octagonal) |
none |
Virdi and Dowling 1980 | 5.88-18.25 |
4.38-16.75 |
48.1-433.8 (avg. values) |
none |
Cross Section Information
Reference | Tube Dimensions | Steel Properties | Concrete Properties |
---|---|---|---|
Kilpatrick and Rangan 1999 |
|
Cold-formed Fy = 50.8 ksi |
f'c = 15.30 ksi |
Morishita and Tomii 1982 |
|
Cold-formed mild steel Fy = 49.2-50.9 ksi |
f'c = 3.32, 3.86, 5.08 ksi |
Mouli and Khelafi 2007 |
|
Fy = 49.3-52.65 ksi |
f'c = 6.5 (NWC) , 5.32 (LWC) ksi |
Parsley, Yura, and Jirsa 2000 |
|
Fy = 48.0 ksi |
f'c = 5.86-6.55 ksi |
Roeder, Cameron, and Brown 1999 |
|
N.A. |
f'c = 4.05-6.86 ksi |
Shakir-Khalil 1993 |
|
Mild steel Grade 43 |
f'c = 5.22-6.16 ksi f'c = 5.50-6.43 ksi |
Shakir-Khalil and Hassan 1994 |
|
N.A. |
f'c = 3.19-12.18 ksi |
Tomii, Yoshimura, and Morishita 1980 |
|
Cold-formed mild steel Fy = 36.6 ksi (smooth) 36.3 ksi (checkered) |
f'c = 2.42-6.69 ksi (expansive) 2.89-4.92 ksi (ordinary) |
Virdi and Dowling 1980 |
|
Mild steel |
f'c = 3.19-6.72 |