Pedestrian, cyclist and road and rail safety in high winds - - PDF document

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pedestrian cyclist and road and rail safety in high winds
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Pedestrian, cyclist and road and rail safety in high winds - - PDF document

Aug 29, 2022 120 likes •280 views

07/03/20 Pedestrian, cyclist and road and rail safety in high winds Pedestrians in high winds 1 07/03/20 Bridgewater Place, Leeds Video Clip removed I'm concerned having heard all the evidence there may be an offence of corporate

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Pedestrian, cyclist and road and rail safety in high winds Pedestrians in high winds

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Bridgewater Place, Leeds

Video Clip removed

“I'm concerned having heard all the evidence there may be an

  • ffence of corporate

manslaughter by one or more of the organisa=ons. I'm obliged to adjourn this inquest pending further inquiries by the Crown Prosecu=on Service” “I am recommending that Leeds City Council closed the road where Dr Slaney died when wind speeds reached 20 m/s - about 45mph”. Melanie Williamson, Wakefield Coroner 2014, 2015

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Lawson (2001) LDCC Sitting 5.60m/s , 1% (5) Pedestrian sitting 4m/s, 5% Entrance doors 5.6m/s, 6% (6) Pedestrian standing 5.6m/s, 6% (6) Pedestrian standing 6m/s, 5% Pedestrian walk through 8.25m/s, 4% (8) Pedestrian walking 8m/s, 5% P e o p l e a r o u n d buildings 10.95m/s, 2% (9) Roads and car parks 10.95, 6% (10) Business walking 10m/s, 5% Distress 14.1m/s, 0.01% Distress 15m/s, 0.025%

Comfort and safety criteria Adequacy of safety criteria? Full scale measurements

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Sensor Anemometer

Video Clip removed

5 10 15 20 10 20 30 40 50 60 70 Distance along route (m)

Wind velocity (m/s)

  • 0.6
  • 0.4
  • 0.2

0.2 0.4 0.6 0.8 1 1.2 10 20 30 40 50 60 70

Horizontal and ver.cal accelera.ons (g)

0.5 1 1.5 2 10 20 30 40 50 60 70 Distance along route (m)

Gait cycle 4me (s)

0.5 1 1.5 2 2.5 10 20 30 40 50 60 70 Distance along route (m)

Stride length (m)

0.5 1 1.5 2 2.5 10 20 30 40 50 60 70 Distance along route (m)

Stride speed (m/s)

  • 0.2
  • 0.1

0.1 0.2 10 20 30 40 50 60 70 Distance along route (m)

Swing width (m)

Typical results

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5 10 15 20 10 20 30 40 50 60 70 Distance along route (m)

Wind velocity (m/s)

  • 0.6
  • 0.4
  • 0.2

0.2 0.4 0.6 0.8 1 1.2 10 20 30 40 50 60 70 0.5 1 1.5 2 10 20 30 40 50 60 70 Distance along route (m)

Gait cycle 4me (s)

0.5 1 1.5 2 2.5 10 20 30 40 50 60 70 Distance along route (m)

Stride length (m)

0.5 1 1.5 2 2.5 10 20 30 40 50 60 70 Distance along route (m)

Stride speed (m/s)

  • 0.2
  • 0.1

0.1 0.2 10 20 30 40 50 60 70 Distance along route (m)

Swing width (m)

Typical results

20 40 60 80 100 120 140 6 to 8 8 to 10 10 to12 12 to 14 14 to 16 16 to 18 Number of gusts Gust speed m/s 0.0 20.0 40.0 60.0 80.0 100.0 6 to 8 8 to 10 10 to12 12 to 14 14 to 16 16 to 18 % of gusts Gust speed (m/s) Swing width % Accelera9on % Instability %

Typical results

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Lawson (2001) LDCC Sitting 5.60m/s , 1% (5) Pedestrian sitting 4m/s, 5% Entrance doors 5.6m/s, 6% (6) Pedestrian standing 5.6m/s, 6% (6) Pedestrian standing 6m/s, 5% Pedestrian walk through 8.25m/s, 4% (8) Pedestrian walking 8m/s, 5% P e o p l e a r o u n d buildings 10.95m/s, 2% (9) Roads and car parks 10.95, 6% (10) Business walking 10m/s, 5% Distress 14.1m/s, 0.01% Distress 15m/s, 0.025%

PracLcal operaLon Cyclists in high winds

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the cyclist’s required power output. Average

Side force coefficient Wind angle

Calculated inclinaLon for 50kg cyclist

  • 1.5
  • 1
  • 0.5

0.5 1 1.5 2.5 5 7.5 10 12.5 15 17.5 Time (sec)

Angle of inclina1on (degrees)

1 2 3 4 5 6 2.5 5 7.5 10 12.5 15 17.5 Time (sec)

Wind speed (m/s)

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Road vehicles in high winds

Skye Bridge wind restricLons

Wind Speed is 35mph – 50mph: Sign advices “Caution High Winds” Wind Speed is 50mph – 75mph: Sign advices “Skye Bridge Closed to High Sided Vehicles” Wind Speed exceeds 75mph: Sign advices “Skye Bridge Closed” Video Clip removed

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Start / Finish lay-by

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10 20 30 40 50 60 70 30 60 90 120 150 180 Wind speedfor overturning (m/s) Wind direc5on (degrees)

Unloaded large van

50mph 30mph 10mph

Wind angle Rolling moment coefficient

Gust exceedances

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Severn DarTord Orwell Humber Cleddau Second Severn Forth Road Skye Kessock Tay Road Upper Forth Erskine Queensferry

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PracLcal operaLon PracLcal operaLon

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Rail vehicles in high winds

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0.1 0.2 0.3 20 40 60 Side force coefficient per unit length Yaw angle (degrees) Wind tunnel TRAIN rig CFD

Side force coefficient Wind angle Video Clip removed

10 20 30 40 50 60 100 200 300 400 Accident wind speed m/s Train speed km/h ICE3 Paradot Fit