Mô tả:
Aerodynamic Stability
of a Longspan Bridge
Jongdae Kim, Ph.D.
Alan G. Davenport Wind Engineering Group
WIND ENGINEERING : Generals
• BLWTL 2
The second generation wind tunnel at The University of Western Ontario was constructed
in 1984. It includes three test sections.
Length (m)
Width (m)
Height (m)
Max Speed(km/hr)
Overall Size
64
15
6
High Speed Test Section
39
3.4
2.5
100
Low Speed Test Section
52
5
4
36
The University of Western
Ontario
WTC Testing at Colorado State University (1964)
• Alan Davenport
(left) lead the
testing at Colorado
State University,
then the only
existing wind
tunnel capable of
modeling the
atmospheric
boundary layer
• Collaboration with
Jack Cermak of
CSU (right)
1:500 Model of New York City
with World Trade Center Towers
The Meteorological Wind Tunnel at CSU (1964)
The World Trade Center design team at CSU
A.G. Davenport
M. Levy
J.E. Cermak
L.E. Robertson
J. Skilling
M Yamasaki
Big Wind Tunnels
• BLWTL (London, Ontario, Canada)
- The Boundary Layer Wind Tunnel Lab
• RWDI (Guelph, Ontario, Canada)
- Rowan Williams Davies and Irwin Inc.
• CPP (Fort Collins, Colorado, USA)
- Cermak, Peterka, Peterson
• BMTFM (Teddington, Middlesex, UK)
- British Maritime Technology, Fluid Mechanics
The University of Western
Ontario
Alan G. Davenport Wind Engineering Group
ANALYSIS METHODS
• Experiments :
Wind Tunnel Tests
Full Scale Test
Field Measurements
• Empirical Methods
• Numerical Analysis
The University of Western
Ontario
Alan G. Davenport Wind Engineering Group
EXPERIMENTS : BRIDGES
• Wind tunnel tests of bridge models
The Section Models
The Full Bridge Aeroelastic Models
The Taut Strip Models
The University of Western
Ontario
Alan G. Davenport Wind Engineering Group
Section Model Tests
The University of Western
Ontario
Alan G. Davenport Wind Engineering Group
The Full Bridge Aeroelastic Model Tests
The University of Western
Ontario
Alan G. Davenport Wind Engineering Group
The Taut Strip Model Tests
The University of Western
Ontario
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