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Bridge Engineering Lab
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The lab uses wind tunnel experiments and computation to clarify how bridges vibrate in strong winds.
AboutAbout the lab
Aerodynamics of bridges.
The Bridge Engineering Lab does research in wind engineering, studying how structures behave in strong winds.
Focusing on bridge girder cross-sections and cables, it examines airflow and vibration using wind tunnel experiments and computational fluid dynamics (CFD).
It clarifies the mechanisms by which structures begin to vibrate on their own in wind, and develops countermeasures to suppress the vibration.
It also covers disaster prevention and maintenance, including strong-wind disasters from typhoons and tornadoes, corrosion from airborne salt, and snow accretion on structures.
Key terms
- Wind tunnel experiment
- An experiment in which a model is placed in a device that generates artificial wind, and the forces acting on it and how it vibrates are measured
- Aeroelastic vibration
- A phenomenon in which an object in wind keeps vibrating on its own by taking energy from the wind
- Airborne salt
- Salt particles, formed from sea spray and similar sources, that are carried by wind and deposited on the surfaces of structures
NewsLab news
Associate Professor Hisato Matsumiya and colleagues receive the Paper Award of the Japan Society of Civil Engineers' Journal of Structural Engineering, Vol. 72A
A paper on snow accretion on power lines is published in the Journal of Wind Engineering and Industrial Aerodynamics
A paper on snow accretion on power lines is published in the Journal of Structural Engineering of the Japan Society of Civil Engineers
A paper on snow accretion on power transmission towers is published in the Transactions of the Institute of Electrical Engineers of Japan
ResearchResearch themes
Under the theme of the wind resistance of structures in strong winds, the lab conducts wind tunnel experiments and computational fluid dynamics analysis on bridge cross-sections and cables. It works on clarifying various aeroelastic vibration phenomena, evaluating responses, and developing stabilization measures.
*Illustrative imageBasic Cross-Sections and the Role of Vortices
The aerodynamic characteristics of basic structural cross-sections such as rectangles and circular cylinders are essential for considering the wind stability of real structures. The lab studies how vortices shed around a body affect aerodynamic characteristics, as well as the mechanism and critical wind speed of divergent vibration.
*Illustrative imageHow Bridges Begin to Shake in the Wind
There are known cases such as the old Tacoma Narrows Bridge, whose girder underwent torsional vibration under wind and collapsed. For bridge cross-sections of various shapes, the lab measures the aerodynamic forces on the girder and the amplitude response in wind tunnel experiments, working to clarify the vibration phenomena and stabilize them.
*Illustrative imageAeroelastic Vibration of Cables
Cables of cable-stayed bridges vibrate when wind and rain act together. This is a complex phenomenon involving water rivulets forming on the cable surface and axial flow behind inclined cables. The lab is working to clarify the mechanism and develop cable shapes with good aerodynamic characteristics.
*Illustrative imageEstimating How Much Salt Accumulates on Bridges
Sea salt particles and de-icing agents spread in winter are carried by wind and adhere to bridge surfaces, causing steel corrosion and salt damage to concrete. The lab calculates the airflow around bridge cross-sections with computational fluid dynamics and estimates the amount deposited on each part.
MembersFaculty
The members of the Bridge Engineering Lab are faculty, secretaries, visiting researchers, and doctoral, master's, and undergraduate students.As of 2026
- ProfessorTomomi Yagi
- Associate ProfessorHisato Matsumiya
- Program-Specific Associate ProfessorTomoki Nishino
- Assistant ProfessorKyohei Noguchi
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “Kampen, Molenbrug. . (actm.) 01” Agnes Monkelbaan / CC BY-SA 4.0 (cropped)
- Basic Cross-Sections and the Role of Vortices: “VortexStreet01” Gary Koopman / Public domain (cropped)
- How Bridges Begin to Shake in the Wind: “Tacoma Narrows bridge cable saddle” Lowe, Jet / Public domain (cropped)
- Aeroelastic Vibration of Cables: “Pelješac bridge - Pelješki most - deck and cables” Ponor / CC BY-SA 4.0 (cropped)
- Estimating How Much Salt Accumulates on Bridges: “The Mourne Coastal Path at Bloody Bridge - geograph.org.uk - 4922302” Eric Jones / CC BY-SA 2.0 (cropped)
- Related lab (Earthquake Lifeline Engineering Lab): “Water supply pipeline crossing the Canning River from Shelley to Wilson, June 2021 02” Calistemon / CC BY-SA 4.0 (cropped)
- Related lab (Structural Dynamics Lab): “Earthquake proof! (mcpherson-fig2)” ESO / CC BY 4.0 (cropped)
- Related lab (Infrastructure Creation Engineering Lab): “General Rafael Urdaneta Bridge view from the lake to Cabimas side” Wilfredor / CC0 (cropped)
- Related lab (Geomechanics Lab): “Soil sample Château d’Yquem, Sauternes” Megan Mallen / CC BY 2.0 (cropped)
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