Date: May 13, 2002
Place: National Institute of Standards and Technology, Gaithersburg, MD, USA
Attendees: U.S. Side-- Peter Chang (Chairman) NSF
Partha Sarkar Iowa State Univ.
Emil Simiu NIST
Fahim Sadek NIST
Nicholas Jones Johns Hopkins Univ.
Harold Bosch FHWA
Japan Side-- Jun Murakoshi (Co-Chairman) PWRI
Hiroshi Sato PWRI
Yasuo Okuda BRI
Koichiro Fumoto PWRI
1. Objective and Scope of Work
To exchange technical information and to jointly plan, promote, and foster research and dissemination, to improve understanding of wind and its effects on structures, establish more rational wind resistant design methods for structures, and to contribute to wind hazard mitigation. Specific objectives include:
(1) Facilitate collaborative research and cooperation between U.S. and Japanese researchers in wind engineering.
(2) Identify nuggets of success in wind engineering.
(3) Identify research needs in the areas of hazards mitigation, new technology, basic and applied research and social and economic impacts of wind hazard.
The scope of work includes:
(1) To characterize strong wind, especially boundary layer extreme winds.
(2) To study wind effects including wind loading on and wind-induced response of structures.
(3) To perform experimental and analytical methods to predict wind and its effects.
(4) To perform damage, wind hazard, and risk assessments and develop technologies for wind hazard mitigation.
To facilitate the above scope of work, conduct annual or biannual workshops to evaluate current and future research agendas that may lead to synergistic research between U.S. and Japan. The workshops should be alternatively held in U.S. and Japan.
2. Accomplishments
(1) Following the Panel's Strategic Plan, approved at its 33rd Joint Meeting, the former Task Committee E, Design for Wind and Wind Hazard Mitigation was reactivated as Task Committee D, Wind Engineering. This decision was based on the Task Committee's past accomplishments and its solid approach as outlined in its Future Plans below that address its Objective.
3. Future Plans
(1) Plan a workshop on "Design for Wind and Wind Hazard Mitigation." This third U.S.-Japan Workshop will be held in Seattle, U.S. in September 2002. The theme of this Workshop is "Reducing Losses from Wind: Collaborative Opportunities for the 21st Century".
(2) Pursue collaborative research on the following topics:
a) Wind characteristics and wind hazards
i) Wind effects due to complex terrain
ii) Modeling and validation with full-scale data
iii) Joint field studies
iv) Cooperative quick-response post-storm damage assessments
b) Wind effects on buildings
i) Development of realistic aerodynamic loads for performance-based structural design
ii) Comparison of wind tunnel data sets and CFD results to full-scale measurements
c) Wind effects on bridges
i) Improvement of methods for predicting wind-induced response of cable-suspended bridges with edge girders
ii) Prediction and mitigation of rain/wind-induced vibration of stay cables
d) Evolving Technologies
i) Next generation wind tunnels: Improvement of methods to simulate non-stationary wind (straight-line, tornado and microburst)
ii) Structural control
(3) Exchange technical information on the following topics
a) Wind characteristics and wind hazards
b) Wind pressures, loadings and dynamic characteristics of buildings
c) Wind-induced response of cable-suspended bridges
d) Prediction and mitigation techniques for wind effects