Title: Florida Coastal Monitoring Program Hurricane Wind Data Collection
1Florida Coastal Monitoring ProgramHurricane Wind
Data Collection
- Kurt Gurley University of Florida
- Forrest Masters Florida International
University - Tim Reinhold Institute for Business and Home
Safety - David Prevatt Clemson University
2Florida Coastal Monitoring Program
- Measure in-field hurricane ground level wind
velocities and relay data in real-time to
emergency managers, forecasters and researchers - Measure the hurricane wind pressures on
residential structures - Test capacity of building components
- Statistical Assessment of structural damage
post-event - Model structural vulnerability, and investigate
mitigation measures
3Motivation for Research
- Knowledge of ground-level winds used by
- Atmospheric scientists
- Boundary layer transition during hurricane
landfall - Peak and mean speeds for model calibration
- Validation of remote sensing technology
- Emergency managers
- Estimate
- Physical damage (buildings and lifelines)
- social and economic impacts
- Assignment of limited resources
4Motivation for Research
- Knowledge of ground-level winds used by
- Wind and civil engineers
- Modeling the Damage Chain
- Wind speeds at higher elevations
- Wind speeds near ground level
- Wind pressure on structures
- Wind damage prevention measures
- Outcomes
- Wind tunnel modeling
- Building codes and standards with accurate load
information
5Portable Weather Stations
- Stiff 10-m Steel Lattice Tower
- Remain stable in 200 mph winds
- Self-powered
- Instruments collect wind speed and environmental
data - Quick setup to hasten retreat from approaching
storm
6Tower in Atlantic Beach, NCIsabel, 2003
7Navarre Causeway Dennis 2005
Peak 3-sec gust of 120 mph at 5 meters
8Tower Data
- Time histories of wind speed over the duration of
the hurricane - Statistical analysis reveals information needed
for engineering design to resist the wind
9Real-time Data Transmission
GOES SATELLITE
MIRRORWEB SERVERS
NOAADCS
FIELD
NOAA
10NOAA Hurricane Research DivisionMaximum
Sustained Wind Swath
Tower data is one of the sources of ground data
input to HWIND contour model of wind speeds
11Fleet of 5 towers (6 for 2006 season)
12Program Website www.ce.ufl.edu/fcmp
13FCMP Instrumented Homes Measure Hurricane Wind
Pressure
- 32 homes along Florida coast
- Owners receive free retrofits
- storm shutters, new roof, gable bracing, braced
garage door, etc. - Sensors record uplift roof pressure
14(No Transcript)
15Hurricane FrancesWinds on House Jensen Beach
Study to Compare full-scale to Wind tunnel
model to ASCE 7 loads
16Hurricane FrancesWinds on House Jensen Beach
17Frances Peak 3-sec Gusts
18Hurricane Frances Eye Wall
Eyewall Peak 3-second gust 82 m.p.h.
19Ivan Category 3 ? Not Based on Measurements
20Jeanne Peak 3-sec Gusts
21Wilma Measured Peak Winds
22Structural Resistance
- Using real houses being demolished
- In-field testing to quantify actual loads to
failure - Relate back to wind speed
- Test as-built and retrofitted
23Failure Capacity Testing
- DCA project to determine ultimate loads to
failure for as-built and retrofitted structures
- As-built roof to wall toe-nail connections
24Failure Capacity Testing
- Retrofit with modern roof to wall connections
- Uplift capacity increased by factor of 5 with
simple retrofit - Loads to be converted to wind speed
25Post EventDamage Documentation
Jeanne, 2004
26Post Event Damage Documentation
27 Window PerformanceCharley 2004 -Charlotte
County
28Computational Modeling of Structural Vulnerability
- Model the capacity of building components
- Apply wind loads
- Calculate probability of damage to building
29Mitigation Studies
- How would these curves (risks) change if we added
strength? - Hurricane shutters
- More nails
- Easily incorporated into the structural model
- Leads to comparative cost effectiveness ()
- May be applied to other types of structures
30 Thank you. Any questions?
- Project website
- www.ce.ufl.edu/fcmp