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REPORT
This report is an archived publication and may contain dated technical, contact, and link information
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Publication Number:  FHWA-HRT-14-070    Date:  September 2014
Publication Number: FHWA-HRT-14-070
Date: September 2014

 

Wind Tunnel Investigations of An Inclined Stay Cable With A Helical Fillet

APPENDIX A. DETAILED LIST OF RUNS AND EXPERIMENTAL CONDITIONS

Table 6. Description of all the runs completed during the 2011 wind tunnel test.

Day Tare Run No. No. of Pts Inclination (Degree) Spring Rotation (Degreea) Cable Rotation (Degreea) Case Description Freq. Sway (Hz) Freq. Heave (Hz) Freq. Ratio Damping Sway (Percent) Damping Heave (Percent) Sc Sway Sc Heave Comments
5/6   24 4 60 0 0 Dynamic Damping trace 1.39 1.39 1.0 0.08 0.10 1.6 2.1 pt1: sway; pt2: heave; pt3: end-to-end sway; pt4: end-to-end heave
5/6 25 27 19 60 0 0 Dynamic Increasing speed sweep               pt1–19: speed sweep
5/6 25 28 20 60 0 0 Dynamic Decreasing speed sweep               pt1–20: speed sweep
5/9 31 32 15 60 0 0 Static Increasing speed sweep               pt1–15: speed sweep
5/9 34 35 15 60 0 0 Static Decreasing speed sweep               pt1–15: speed sweep
5/9 36 37 12 60 0 27.7 Static Increasing speed sweep               pt1–12: speed sweep
5/10 38 39 15 60 0 -13.8 Static Increasing speed sweep               pt1–15: speed sweep
5/10 40 41 15 60 0 13.8 Static Increasing speed sweep               pt1–15: speed sweep
5/10   42 2 60 0 -13.8 Dynamic Damping trace 1.39 1.39 1.00 0.08 0.10 1.6 2.1 pt1: sway; pt2: heave
5/10 43 44 17 60 0 -13.8 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/10 45 46 17 60 0 -13.8 Dynamic Increasing speed sweep               pt1–17: speed sweep; repeat of run 44
5/10 45 47 5 60 0 -13.8 Dynamic Forced oscillations               pt1: 12m/s; pt2: 18m/s; pt3: 24m/s; pt4: 30m/s; pt5: 34m/s
5/11 48 49 17 60 0 -30 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/11 48 50 4 60 0 -30 Dynamic Forced oscillations               pt1: 24m/s; pt2: 26m/s; pt3: 28m/s; pt4: 34m/s
5/11 51 52 17 60 0 -40 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/11 51 53 3 60 0 -40 Dynamic Forced oscillations               pt1: 24m/s; pt2: 28m/s; pt3: 34m/s
5/11 55 56 17 60 0 -50 Dynamic Increasing speed sweep               pt1–7: speed sweep
5/11 55 58 2 60 0 -50 Dynamic Forced oscillations               pt1: 24m/s; pt2: 28m/s
5/11 59 60 17 60 0 -60 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/11 59 61 6 60 0 -60 Dynamic Forced oscillations               pt1: 14m/s; pt2: 22m/s; pt3: 22m/s; pt4: 30m/s; pt5/6: 36m/s
5/12 62 63 17 60 0 -75 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/12 62 64 3 60 0 -75 Dynamic Forced oscillations               pt1: 16m/s; pt2: 22m/s; pt3: 36m/s
5/12 65 66 19 60 0 -90 Dynamic Increasing speed sweep               pt1–19: speed sweep
5/12 65 67 17 60 0 -90 Dynamic Decreasing speed sweep               pt1–17: speed sweep
5/12 68 69 17 60 0 5 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/12 70 71 17 60 0 65 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/13 72 73 18 60 0 50 Dynamic Increasing speed sweep               pt1–18: speed sweep
5/13 74 75 20 60 0 -90 Dynamic Increasing speed sweep               pt1–20: speed sweep, repeat run 66
5/13 74 76 2 60 0 -90 Dynamic Aerodynamic damping test               pt1–2: aerodynamic damping at 32m/s
5/13 74 79 5 60 0 -90 Dynamic Aerodynamic damping test               pt1: 20m/s; pt2:data taken from 20–22m/s; pt3: data taken while increasing speed from 20 to 22m/s; pt4: aero damping at 32m/s
5/13 80 81 16 60 0 -90 Static Increasing speed sweep               pt1–16: speed sweep
5/13 84 85 15 60 0 -86 Static Increasing speed sweep               pt1–15: speed sweep
5/16 87 88 15 60 0 -88 Static Increasing speed sweep               pt1–15: speed sweep
5/16 89 90 15 60 0 -92 Static Increasing speed sweep               pt1–15: speed sweep
5/16 91 92 15 60 0 -94 Static Increasing speed sweep               pt1–15: speed sweep
5/16 93 94 15 60 0 -90 Static Increasing speed sweep               pt1–15: speed sweep, repeat run 81 (helical fillet lifted because of cold weather)
5/16   96 2 60 0 -90 Dynamic Damping trace 1.39 1.39 1.00         pt1: sway; pt2: heave
5/16   97 1 60 0 -90 Dynamic Damping trace 1.39             pt1: sway
5/16   98 1 60 0 -90 Dynamic Damping trace 1.4             pt1: sway
5/16   99 1 60 0 -90 Dynamic Damping trace 1.4             pt1: sway
5/16   100 3 60 0 -90 Dynamic Damping trace 1.4 1.4 1.00 0.15 0.40 3.0 8.1 pt1: sway; pt2: heave
5/17 100 101 20 60 0 -90 Dynamic Increasing speed sweep               pt1–20: speed sweep, two elastic bands broke during pt8
5/17 100 102 2 60 0 -90 Dynamic Aerodynamic damping test               pt1–2: aerodynamic damping at 36m/s
5/17   103 2 60 0 -90 Dynamic Damping trace 1.4 1.4 1.00         pt1: sway; pt2: heave
5/17   104 1 60 0 -90 Dynamic Damping trace 1.4             pt1: sway
5/17   105 1 60 0 -90 Dynamic Damping trace   1.4           pt1: heave
5/17   106 4 60 0 -90 Dynamic Damping trace 1.4 1.4 1.00 0.15 0.15 3.0 3.0 pt3: sway; pt4: heave, medium damping
5/17 107 108 18 60 0 -90 Dynamic Increasing speed sweep               pt1–18: speed sweep
5/17   109 2 60 0 -90 Dynamic Damping trace 1.4 1.4 1.00         pt1: sway; pt2: heave
5/17   110 2 60 0 -90 Dynamic Damping trace 1.4 1.4 1.00         pt1: sway; pt2: heave
5/17   111 1 60 0 -90 Dynamic Damping trace 1.39             pt1: sway
5/17   112 1 60 0 -90 Dynamic Damping trace 1.39             pt1: sway
5/17   113 1 60 0 -90 Dynamic Damping trace   1.4           pt1: heave
5/17   114 2 60 0 -90 Dynamic Damping trace   1.42           pt1: heave
5/17   115 1 60 0 -90 Dynamic Damping trace 1.4             pt1: sway
5/18   116 2 60 0 -90 Dynamic Damping trace 1.4 1.42 0.99 0.25 0.25 5.1 5.1 pt1: sway; pt2: heave, high damping
5/18 117 118 23 60 0 -90 Dynamic Increasing speed sweep               pt1–23: speed sweep
5/18   119 2 60 0 -90 Dynamic Damping trace 1.4 1.42 0.99         pt1: sway; pt2: heave
5/18   120 2 60 0 -90 Dynamic Damping trace 1.39 1.4 0.99 0.08 0.15 1.0 3.1 pt1: sway; pt2: heave, low damping
5/18 121 122 24 60 0 -90 Dynamic Increasing speed sweep               pt1–24: speed sweep
5/18 121 123 12 60 0 -90 Dynamic Decreasing speed sweep               pt1–12: speed sweep
End of Phase I and Start of Phase II
5/19 124 125 13 60 0 -88 Dynamic Increasing speed sweep               pt1–13: speed sweep
5/19   126 2 60 0 -88 Dynamic Damping trace 1.39 1.39 1.00         pt1: sway; pt2: heave
5/19   128 8 60 -54.7 -90 Dynamic Damping trace 1.4     0.12   2.5   pt1: sway
5/19   129 1 60 -54.7 -90 Dynamic Damping trace   1.42     0.20   4.2 pt1: heave
5/19 130 131 18 60 -54.7 -90 Dynamic Increasing speed sweep               pt1–18: speed sweep
Change to 45-Degree Inclination
5/24   133 3 45 0 -90 Dynamic Damping trace 1.42 1.37 1.04 0.12 0.10 2.4 2.1 pt2: sway; pt3: heave
5/24 135 136 15 45 0 -90 Dynamic Increasing speed sweep               pt1–15: speed sweep
5/25 137 137 21 45 0 0 Dynamic Increasing speed sweep               pt1–21: speed sweep
5/25   138 2 45 0 90 Dynamic Damping trace 1.42 1.39 1.02 0.12 0.08 2.4 1.6 pt1: sway; pt2: heave
5/25 139 140 17 45 0 90 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/25 141 142 17 45 0 23 Dynamic Increasing speed sweep               pt1–17: speed sweep
5/25 143 144 18 45 0 -25 Dynamic Increasing speed sweep               pt1–18: speed sweep
5/27   147 2 45 -54.7 -25 Dynamic Damping trace 1.42 1.43 0.99 0.09 0.07 1.8 1.4 pt1: heave; pt2: sway
5/27 148 149 24 45 -54.7 -25 Dynamic Increasing speed sweep               pt1–24: speed sweep, beating
5/27   150 1 45 -54.7 0 Dynamic Damping trace   1.43     0.05   1.0 pt1: heave
5/27 151 152 18 45 -54.7 0 Dynamic Increasing speed sweep               pt1–18: speed sweep, beating
5/27   153 2 45 -45 -25 Dynamic Damping trace 1.42 1.43 0.99 0.16 0.06 3.3 1.2 pt1: heave; pt2:sway
5/27 154 155 24 45 -45 -25 Dynamic Increasing speed sweep               pt1–23: speed sweep; pt24: deceleration, beating
5/30   157 3 45 -12.5 -25 Dynamic Damping trace 1.45 1.39 1.04 0.14 0.10 3.0 2.1 pt2: heave; pt3: sway
5/30 158 159 21 45 -12.5 -25 Dynamic Increasing speed sweep               pt1–23: speed sweep; pt24: deceleration, beating
Change Back to 60-Degree Inclination
6/1   161 4 60 -12.5 -90 Dynamic Damping trace 1.43 1.39 1.01 0.10 0.14 2.2 3.0 pt3: sway; pt4: heave
6/1 162 163 24 60 -12.5 -90 Dynamic Increasing speed sweep               pt1–23: speed sweep; pt24: deceleration run, very windy
6/1   164 2 60       Damping trace               pt1: sway; pt2: heave
6/7   165 2 60       Damping trace 1.43 1.39 1.03 0.09 0.10 2.0 2.2 pt1: sway; pt2: heave
6/7 166 167 31 60 -12.5 -90 Dynamic Increasing speed sweep               pt1–29: speed sweep; pt30–31: aerodynamic damping
6/7                               Repeat of run 163
6/7 166 168 1 60 -12.5 -90 Dynamic Ramp down from max speed to 0 m/s               pt1: deceleration run
6/7   171 2 60       Damping trace               pt1: sway
6/8   173 5 60       Damping trace 1.4 1.39 1.01 0.08 0.15 1.7 3.3 pt3: sway; pt4: heave
6/8 174 176 25 60 0 -92 Dynamic Increasing speed sweep               pt1–22: speed sweep; pt23–24: aerodynamic damping; pt25: deceleration
6/8 177 178 16 60 0 -90 Dynamic Increasing speed sweep               pt1–13: speed sweep; pt14–15: aerodynamic damping
6/15 179 180 4 60       Turbulent flow characteristic               Position 1 of the ladders upstream of the cable
6/15 181 182 5 60       Turbulent flow characteristic               Position 2 of the ladders(167.64 cm further away from the cable)
6/15 183 184 4 60       Turbulent flow characteristic               Position 2 of the ladders, first vertical measurement
6/15 185 186 4 60       Turbulent flow characteristic               Position 2 of the ladders, second vertical measurement
6/15 187 188 4 60       Turbulent flow characteristic               Position 2 of the ladders, third vertical measurement
6/16 189 190 4 60       Turbulent flow characteristic               Position 2 of the ladders, fourth vertical measurement
6/16 191 192 12 60       Turbulent flow characteristic               Calibration of the test section in turbulent flow, speed sweep
6/16 193 194 5 60       Turbulent flow characteristic               Position 2 of the ladders, measure of flow for different lateral positions
6/16   195 2 60 0 -90 Dynamic Damping trace 1.4 1.39 1.01 0.08 0.15 1.7 3.3 pt1: sway; pt2: heave
6/16 196 197 22 60 0 -90 Dynamic Increasing speed sweep, turbulent flow               pt1–19: speed sweep; pt20–21: aerodynamic damping; pt22: deceleration
6/16 198 199 24 60 0 -92 Dynamic Increasing speed sweep, turbulent flow               pt1–23: speed sweep; pt24: aerodynamic damping, one threaded rod broke after pt24
6/17   201 3 60 0 -88 Dynamic Damping trace 1.4 1.39 1.01 0.07 0.13 1.5 2.7 pt1: sway, pt2:heave
6/17 202 203 24 60 0 -88 Dynamic Increasing speed sweep, turbulent flow               pt1–21: speed sweep; pt22–23: aerodynamic damping; pt24: deceleration, new threaded rod
6/17 204 205 2 60 0 0 Dynamic Increasing speed sweep, turbulent flow               pt1: 0m/s; pt2: 4m/s
6/17 204 206 19 60 0 0 Dynamic Increasing speed sweep, turbulent flow               pt1–16: speed sweep; pt17–18: aerodynamic damping; pt19: deceleration
6/17 207 208 27 60 0 50 Dynamic Increasing speed sweep, turbulent flow               pt1–24: speed sweep; pt25–26: aerodynamic damping; pt27: deceleration
Removal of Helical Fillet
6/20   209 3 60 0 50 Dynamic Damping trace 1.4 1.39 1.01 0.07 0.15 1.5 3.2 pt1: sway; pt2: heave
6/20 210 211 20 60 0 50 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–17: speed sweep; pt16: lost laser heave top; pt18–19: aerodynamic damping; pt17–20: not good, the cable was touching the top opening of the wind tunnel and damped motion; pt20: deceleration
6/20   212 2 60 0 0 Dynamic Damping trace 1.4 1.39 1.01 0.08 0.12     pt1: sway; pt2: heave
6/20 213 214 23 60 0 0 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–19: speed sweep; pt20–21: aerodynamic damping; pt22: deceleration; pt23: tare
6/22 215 216 31 60 0 -90 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–28: speed sweep; pt29–30: aerodynamic damping; pt31: deceleration
6/22 218 219 19 60 0 -88 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–16: speed sweep; pt17–18: aerodynamic damping; pt19: deceleration
6/22   220 2 60 0 -92 Dynamic Damping trace 1.4 1.39 1.01 0.09 0.11 1.9 2.3 pt1: sway; pt2: heave
6/22 221 222 16 60 0 -92 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–15: speed sweep; pt16: data at 32m/s but one threaded rod broke after 38 s of data
6/22   223 2 60 0 -54.7 Dynamic Damping trace 1.4 1.39 1.01 0.08 0.13 1.7 2.8 pt1: sway; pt2: heave
6/22 224 225 19 60 0 -54.7 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–16: speed sweep; pt17–18: aerodynamic damping; pt19: deceleration
6/22 227 226 9 60 0 -54.7 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–8: speed sweep (from 6 to
9.5 m/s); pt9: 0 m/s
Removal of Turbulent Flow Exposure
6/23   228 2 60 0 -54.7 Dynamic Damping trace 1.4 1.39 1.01 0.07 0.11 1.5 2.3 pt1: sway, pt2: heave
6/23 229 230 22 60 0 -54.7 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–19: speed sweep; pt20–21: aerodynamic damping; pt22: deceleration
6/23 232 234 20 60 0 0 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–18: speed sweep; pt19–20: aerodynamic damping, one threaded rod broke during the run
6/23   235 2 60 0 -2 Dynamic Damping trace 1.4 1.39 1.01 0.07 0.13 1.5 2.7 pt1: sway; pt2: heave
6/23 236 237 21 60 0 -2 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–18: speed sweep; pt19–20: aerodynamic damping; pt21: deceleration
6/23 238 239 12 60 0 2 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–11: speed sweep; pt12: one threaded rod broke during the run
6/23   240 3 60 0 2 Dynamic Damping trace 1.42 1.39 1.02 0.07 0.13 1.5 2.8 pt1: sway; pt2: heave
6/24 241 244 14 60 0 2 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–11: speed sweep (run 239 with a new rod); pt12–13: aerodynamic damping; pt14: deceleration
6/24 247 248 15 60 0 -93 Static Increasing speed sweep, turbulent flow, no helical               pt1–15: speed sweep
6/24 249 250 16 60 0 -93 Static Increasing speed sweep, turbulent flow, no helical               pt1–16: speed sweep, top gap sealed
6/24 252 253 22 60 0 -93 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–19: speed sweep; pt20–21: aerodynamic damping; pt22: deceleration
6/24   254 2 60 0 -90 Dynamic Damping trace 1.4 1.39 1.01 0.07 0.12 1.5 2.6 pt1: sway; pt2: heave
6/24 254 255 23 60 0 -90 Dynamic Increasing speed sweep, turbulent flow, no helical               pt2–18: speed sweep; pt19–22: aerodynamic damping; pt23: deceleration (no data for pt1)
6/24 256 257 19 60 0 -88 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–18:speed sweep; pt19: aerodynamic damping, only 10-s sampling time at 500 Hz
6/24 256 258 1 60 0 -88 Dynamic Aerodynamic damping               pt1: aerodynamic damping
6/24 259 260 22 60 0 -88 Dynamic Speed sweep, increasing, turbulent flow, no helical               pt1–16: speed sweep; pt17–21: aerodynamic damping; pt22: deceleration, repeat run 257 with 90-s sampling time at 2500 Hz
6/24 261 262 8 60 0 -88 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1–8: speed sweep, 12 to 22 m/s increase by 2 m/s
6/24 261 263 7 60 0 -88 Dynamic Increasing speed sweep, turbulent flow, no helical               pt1: ramp up to 20 m/s; pt2:
20 m/s; pt3: down to 8 m/s and back to 20 m/s; pt4–21: 7 m/s; pt5: 20 m/s; pt6: up to 36 m/s and back to 20 m/s and take data
a Negative degrees indicate clockwise direction.
Note: Blank cells indicate that no information is available.

 

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