r - The Hong Kong Polytechnic University

Tsing Yi
Stonecutters
Stonecutters
Bridge
4W 3W 2W 1W
Rambler Channel
North
SCB Location Plan
Ane (U3D)_AVS_SD(TP)_6
South
Wind Speeds at POE=2.5%
Wind Speeds at POE=5.0%
Wind Speeds at POE=10%
315
Wind Speeds at POE=20%
Wind Speeds at POE=40%
300
Wind Speeds at POE=60%
Wind Speeds at POE=80%
Bridge Alignment
285
West 270
330
345
North
0
15
30
45
60
75
2 4 6 8 10m/s
Key Information Extracted:
Wind Rose Diagram for 3-
second gust wind
Wind Duration for the whole
Feb 2011
Mean wind speed: 2.93 m/s
Prevailing wind direction: SSW
Design wind speed: 50 m/s
(hourly)
90 East
Sensor Location :
Deck Level
Sensor Tag-Name :
Ane(U3D)_AVS_SD(TP)_7
Time Reference of Time-Series Date: 2011-02-01~2011-02-
Data Collected :
28
Time Started: 00:00:00
Time Ended: 23:59:59
Duration of Time-Series Wind 28 days
Data Analyzed :
Location of Time-Series Data Deck Segment No. 35
Collected :
Sampling Rate :
50 Hz
Number of Raw Data Points : 12,096,000
Type of Time Average :
3-second
255
105
Number of Averaged Data
Points :
Mean Wind Speed :
806,400
2.9289 m/s
240
120
Prevailing Wind Direction :
SSW
225
135
210
195
180
South
165
150
POE=Probability of Exceedence
Figure 32 Wind Rose Diagram
from a Ane (U3D) in Southwest deck at mid main span
Wind Power Spectrum and Integral Length Scale
Key Information Extracted:
Duration: 2010-10-21 08:00 to 10:00
Mean Wind Speed, U= 6.27 m/s (10-min.)
Turbulence Intensity, y Iu= 20.1%
Integral Length Scale, y Lu = 75.2 m
Criteria for Checking Buffeting Response
L Alarm = 300m
f M =0.0047Hz
f VK =0.0133Hz
Figure 33 Wind Power Spectrum and corresponding Integral Length Scale determination
(from a Ane(U3D) in Northwest deck at mid main span)
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