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RFSR‐CT‐2009‐0021

Design of joints to composite columns for improved fire robustness

ftp://openspace.dec.uc.pt/

SCFT‐UKPFC230_550_55_02‐07‐2010 2 July 2010 Reverse Channel Connection (UKPFC 230x90x32) to Square Concrete‐Filled Tube Test Result

v2_22 September 2010 1 Department of Civil & Structural Engineering

The University of Sheffield

Reaction Frame

Camera 2

Camera 1

Camera 3Macalloy Bars

Support Beam

Tested Connection

Link BarOven Bar

Reaction Frame

α

Load Jack

Jack Bar

Electrical Furnace

COMPFIRE

RFSR‐CT‐2009‐0021






View of Camera 1

View of Camera 2

View of Camera 3

Oven Bar

Link Bar

Jack Bar

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RFSR‐CT‐2009‐0021






Notes: 1. All steel members were Grade S275, except that the tubular

section was Grade S355 2. Cube strength of concrete on the day of testing was 52MPa 3. Difference between the actual dimension of the UC and UB

sections and their standard dimension given in ‘Steel Building Design: Design Data, In accordance with Eurocodes and the UK National Annexes 2009’ (SCI ‘Blue Book’) is negligible

4. Hexagon head screw ISO 4017‐M20x90‐8.8, hexagon nut ISO4032‐M20‐10 and washer ISO7091‐20‐100HV were used

5. Double nuts were used to bolt the reverse channel to beam endplate

6. All bolt holes were 22mm diameter

A

COMPFIRE

RFSR‐CT‐2009‐0021






Nominal Temperature: 550°C

Jack Load Beam Column Connection Oven Bar Time Temperature* Displacement Angle Rotation Rotation Rotation Force Tension Shear Moment**

(minute) Average (°C) (mm) α (°) (°) (°) (°) (kN) (kN) (kN) (kNm) 0 545.11 0.00 55.37 0.00 0.00 0.00 ‐9.19 ‐5.22 ‐7.56 ‐2.60 1 545.14 0.15 55.14 0.14 0.12 0.01 ‐5.96 ‐3.41 ‐4.89 ‐1.68 2 545.17 0.55 55.08 0.20 0.18 0.01 ‐3.39 ‐1.94 ‐2.78 ‐0.96 3 545.26 1.77 54.94 0.27 0.25 0.02 ‐1.58 ‐0.91 ‐1.29 ‐0.44 4 545.20 3.30 54.85 0.31 0.30 0.01 ‐0.25 ‐0.14 ‐0.21 ‐0.07 5 545.23 4.95 54.71 0.33 0.30 0.03 ‐0.18 ‐0.11 ‐0.15 ‐0.05 6 545.26 6.51 54.73 0.34 0.30 0.03 0.19 0.11 0.16 0.05 7 545.26 7.72 54.36 0.35 0.32 0.03 0.51 0.30 0.41 0.14 8 545.29 8.66 54.23 0.38 0.34 0.04 1.58 0.92 1.28 0.44 9 545.32 10.22 53.98 0.44 0.40 0.04 3.05 1.80 2.47 0.85 10 545.34 12.04 53.94 0.50 0.46 0.04 4.54 2.67 3.67 1.26 11 545.33 13.53 53.81 0.55 0.48 0.06 5.93 3.50 4.79 1.64 12 545.39 15.09 53.69 0.62 0.53 0.09 7.71 4.57 6.21 2.13 13 545.47 16.54 53.57 0.69 0.56 0.13 9.56 5.68 7.69 2.63 14 545.52 17.93 53.56 0.75 0.61 0.14 11.13 6.61 8.95 3.06 15 545.59 19.29 53.52 0.79 0.64 0.15 12.29 7.31 9.88 3.38 16 545.57 20.83 53.55 0.84 0.66 0.18 13.41 7.97 10.78 3.69 17 545.61 22.35 53.48 0.90 0.71 0.19 14.54 8.65 11.69 3.99 18 545.64 23.70 53.50 0.97 0.75 0.22 15.40 9.16 12.38 4.23 19 545.65 25.10 53.55 1.05 0.81 0.24 16.21 9.63 13.04 4.46 20 545.63 26.77 53.56 1.13 0.89 0.24 17.49 10.39 14.07 4.81 21 545.71 28.21 53.57 1.21 0.93 0.28 19.41 11.52 15.61 5.34

COMPFIRE

RFSR‐CT‐2009‐0021






22 545.82 29.68 53.54 1.30 0.97 0.33 22.54 13.40 18.13 6.20 23 545.90 31.04 53.38 1.40 0.99 0.41 25.62 15.28 20.56 7.02 24 545.92 32.42 53.32 1.50 1.03 0.47 28.62 17.10 22.95 7.84 25 545.94 33.93 53.22 1.61 1.06 0.55 31.29 18.74 25.07 8.56 26 545.93 35.17 53.08 1.73 1.09 0.64 34.22 20.56 27.36 9.33 27 546.00 36.74 53.01 1.84 1.10 0.74 36.84 22.16 29.42 10.03 28 546.10 38.19 52.85 1.98 1.13 0.85 39.25 23.71 31.29 10.66 29 546.13 39.85 52.82 2.11 1.15 0.95 41.12 24.85 32.77 11.17 30 546.18 41.39 52.62 2.25 1.16 1.09 43.38 26.34 34.47 11.74 31 546.23 43.07 52.52 2.39 1.18 1.21 45.30 27.57 35.94 12.23 32 546.24 44.70 52.33 2.53 1.20 1.33 47.09 28.78 37.27 12.67 33 546.27 46.39 52.19 2.67 1.22 1.46 48.68 29.84 38.46 13.07 34 546.30 47.95 52.08 2.83 1.22 1.62 49.72 30.56 39.22 13.32 35 546.40 49.44 51.97 2.98 1.24 1.75 51.30 31.61 40.40 13.72 36 546.42 51.03 51.78 3.14 1.25 1.89 52.59 32.54 41.32 14.02 37 546.45 52.66 51.60 3.30 1.26 2.04 53.99 33.54 42.32 14.35 38 546.47 54.35 51.53 3.45 1.27 2.19 54.12 33.67 42.37 14.36 39 546.43 55.97 51.35 3.62 1.27 2.35 55.93 34.93 43.68 14.79 40 546.54 57.70 51.17 3.79 1.28 2.51 57.39 35.99 44.71 15.13 41 546.59 59.25 51.01 3.95 1.30 2.65 58.63 36.89 45.57 15.41 42 546.61 60.83 50.87 4.12 1.31 2.81 59.91 37.81 46.47 15.71 43 546.64 62.45 50.77 4.28 1.31 2.96 61.30 38.77 47.48 16.04 44 546.62 64.15 50.38 4.44 1.33 3.11 61.95 39.50 47.72 16.09 45 546.70 65.94 50.22 4.60 1.33 3.27 63.40 40.56 48.72 16.42 46 546.74 67.30 50.11 4.77 1.35 3.42 64.84 41.58 49.75 16.76 47 546.86 68.95 49.96 4.95 1.36 3.59 66.31 42.66 50.77 17.09 48 546.91 70.62 49.92 5.11 1.37 3.74 66.67 42.93 51.01 17.16

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RFSR‐CT‐2009‐0021






49 546.95 72.17 49.77 5.29 1.38 3.91 68.51 44.24 52.30 17.59 50 547.03 73.69 49.59 5.46 1.39 4.07 70.16 45.48 53.42 17.95 51 547.09 75.35 48.96 5.64 1.40 4.23 71.24 46.78 53.73 18.00 52 547.17 76.90 48.83 5.82 1.42 4.40 73.06 48.09 54.99 18.41 53 547.18 78.44 48.71 5.99 1.42 4.57 74.71 49.30 56.13 18.78 54 547.24 80.03 48.40 6.17 1.44 4.73 75.64 50.22 56.57 18.90 55 547.26 81.42 48.26 6.35 1.44 4.91 77.46 51.57 57.80 19.30 56 547.26 82.97 48.17 6.52 1.46 5.06 79.08 52.74 58.92 19.66 57 547.32 84.65 47.92 6.70 1.46 5.24 80.18 53.74 59.51 19.84 58 547.38 86.07 47.80 6.87 1.47 5.40 82.00 55.08 60.74 20.24 59 547.42 87.72 47.63 7.05 1.49 5.56 82.84 55.83 61.20 20.37 60 547.52 89.38 47.50 7.25 1.50 5.75 84.87 57.34 62.58 20.82 61 547.56 91.03 47.27 7.43 1.51 5.92 85.87 58.27 63.08 20.96 62 547.57 92.65 47.15 7.61 1.53 6.09 87.95 59.81 64.48 21.41 63 547.62 94.18 46.78 7.80 1.54 6.26 89.30 61.16 65.07 21.57 64 547.64 95.73 46.71 7.99 1.56 6.44 91.25 62.57 66.42 22.01 65 547.69 97.35 46.43 8.16 1.57 6.60 92.63 63.84 67.12 22.20 66 547.71 98.82 46.24 8.36 1.58 6.78 93.96 64.99 67.86 22.43 67 547.78 100.37 46.06 8.55 1.59 6.96 96.18 66.74 69.26 22.87 68 547.82 101.85 45.87 8.74 1.60 7.14 97.88 68.15 70.25 23.17 69 547.82 103.21 45.77 8.92 1.61 7.31 99.39 69.33 71.21 23.47 70 547.89 104.76 45.60 9.11 1.63 7.48 100.98 70.65 72.15 23.76 71 547.91 106.17 45.45 9.31 1.64 7.67 102.61 71.99 73.12 24.06 72 547.93 107.47 45.27 9.50 1.65 7.85 104.21 73.34 74.04 24.34 73 548.04 108.74 45.06 9.70 1.67 8.03 105.80 74.73 74.89 24.59 74 548.06 109.99 44.89 9.89 1.68 8.21 107.36 76.06 75.77 24.86 75 548.12 111.26 44.79 10.08 1.69 8.39 108.73 77.17 76.61 25.12

COMPFIRE

RFSR‐CT‐2009‐0021






76 548.21 112.56 44.63 10.27 1.70 8.57 110.24 78.45 77.44 25.37 77 548.20 113.93 44.48 10.46 1.71 8.75 111.84 79.80 78.36 25.65 78 548.25 115.45 44.31 10.67 1.72 8.95 113.38 81.13 79.20 25.90 79 548.29 117.13 44.24 10.87 1.73 9.14 114.36 81.93 79.79 26.08 80 548.38 118.57 44.09 11.08 1.74 9.33 115.92 83.26 80.65 26.34 81 548.46 120.04 43.95 11.28 1.75 9.53 117.22 84.39 81.35 26.55 82 548.48 121.51 43.80 11.49 1.75 9.74 118.31 85.39 81.89 26.70 83 548.51 123.13 43.76 11.71 1.77 9.94 119.72 86.47 82.80 26.99 84 548.48 124.61 43.54 11.92 1.78 10.14 120.87 87.61 83.26 27.11 85 548.55 126.19 43.52 12.14 1.78 10.36 121.33 87.98 83.56 27.20 86 548.63 127.68 43.33 12.37 1.79 10.57 122.83 89.34 84.29 27.41 87 548.72 129.32 43.31 12.59 1.80 10.79 123.49 89.85 84.71 27.54 88 548.75 130.93 43.17 12.82 1.80 11.02 123.83 90.31 84.73 27.53 89 548.78 132.40 42.97 13.05 1.81 11.24 124.94 91.42 85.16 27.63 90 548.82 134.01 42.84 13.29 1.81 11.49 125.33 91.90 85.23 27.64 91 548.86 135.50 42.70 13.53 1.81 11.72 125.37 92.14 85.02 27.54 92 548.92 137.09 42.65 13.77 1.81 11.96 126.02 92.68 85.38 27.65 93 548.97 138.78 42.36 14.03 1.82 12.21 126.13 93.21 84.98 27.47 94 549.03 140.39 42.35 14.28 1.81 12.46 125.54 92.78 84.58 27.34 95 549.05 141.90 42.08 14.55 1.81 12.74 124.91 92.71 83.71 27.02 96 549.11 143.59 42.00 14.82 1.81 13.01 123.40 91.71 82.57 26.63 97 549.13 145.16 41.87 15.10 1.80 13.30 120.70 89.88 80.55 25.96 98 549.22 146.65 41.67 15.41 1.79 13.62 117.66 87.88 78.23 25.18 99 549.21 148.26 41.43 15.73 1.76 13.96 112.44 84.31 74.40 23.91 100 549.35 150.44 41.14 16.36 1.63 14.73 79.45 59.84 52.27 16.77 101 549.46 152.28 40.49 16.75 1.58 15.17 71.03 54.01 46.12 14.73 102 549.51 153.89 40.54 17.08 1.57 15.51 68.30 51.91 44.40 14.19

COMPFIRE

RFSR‐CT‐2009‐0021






103 549.56 155.71 40.29 17.37 1.57 15.80 67.73 51.67 43.80 13.97 104 549.57 157.34 40.03 17.68 1.56 16.12 67.11 51.39 43.17 13.75 105 549.60 159.00 39.90 17.97 1.56 16.41 66.35 50.90 42.56 13.54 106 549.62 160.67 39.59 18.27 1.55 16.72 65.26 50.29 41.59 13.20 107 549.66 162.39 39.51 18.58 1.55 17.04 64.40 49.69 40.98 13.00 108 549.73 164.02 39.39 18.88 1.54 17.35 63.31 48.92 40.18 12.74 109 549.75 165.63 39.50 19.21 1.54 17.68 61.76 47.65 39.28 12.46 110 549.78 167.26 39.22 19.54 1.52 18.02 59.97 46.46 37.92 12.01 111 549.83 169.02 39.18 19.88 1.51 18.37 57.69 44.72 36.45 11.54 112 549.83 170.44 38.90 20.24 1.50 18.75 54.20 42.18 34.04 10.75 113 549.92 172.74 38.53 20.77 1.43 19.34 40.75 31.88 25.39 8.00 114 549.91 174.44 38.53 21.11 1.42 19.69 39.35 30.78 24.51 7.72 115 549.94 176.06 38.33 21.47 1.41 20.06 37.90 29.73 23.51 7.40 116 549.95 177.72 38.29 21.82 1.40 20.42 36.50 28.65 22.61 7.11 117 549.99 179.34 38.01 22.18 1.39 20.79 35.03 27.60 21.58 6.77 118 550.02 181.25 37.78 22.63 1.35 21.27 28.17 22.27 17.26 5.41 119 550.03 183.05 37.51 23.07 1.33 21.75 24.27 19.25 14.78 4.62 120 550.08 184.66 37.41 23.41 1.31 22.10 24.08 19.13 14.63 4.57 121 550.11 186.47 37.15 23.77 1.32 22.45 24.28 19.35 14.66 4.57 122 550.12 188.34 37.00 24.14 1.32 22.83 24.54 19.60 14.77 4.60 123 550.10 189.96 36.79 24.48 1.32 23.17 25.14 20.13 15.06 4.68

* Average temperature of the beam web, endplate, reverse channel and bolt ** Moment about Point A on the specimen drawing

COMPFIRE

RFSR‐CT‐2009‐0021






0

100

200

300

400

500

600

700

0 50 100 150 200 250 300 350

Temperature (°C)

Time (minute)

Temperature Distribution during Initial Heating‐up

1 2

3 4

5 6

7

765

42

1(5‐7)

3

(3)

(2)(4)

(1)(4) (2)

(1)

on Endplate

in Bolt

COMPFIRE

RFSR‐CT‐2009‐0021






�

0

100

200

300

400

500

600

0 20 40 60 80 100 120 140

Temperature (°C)

Time (minute)

Temperature Distribution during Loading

1 2

3 4

5 6

7

765

42

1(5‐7)

3

(3)(2)(4)

(1)(4) (2)

(1)

on Endplate

in Bolt

COMPFIRE

RFSR‐CT‐2009‐0021






�

‐20

0

20

40

60

80

100

120

140

0 5 10 15 20 25

Force (kN)

Connection Rotation (°)

0

5

10

15

20

25

30

0 20 40 60 80 100 120 140

Rotation (°)

Time (minute)

Beam Rotation

Column Rotation

Connection Rotation

‐20

0

20

40

60

80

100

120

140

0 20 40 60 80 100 120 140

Forces (kN)

Time (minute)

Oven Bar Force

Tension

Shear

COMPFIRE

RFSR‐CT‐2009‐0021






Photographs after Test

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