GALSWORTHY, Jon

Assistant Professor of Civil Engineering
Department of Civil and Environmental Engineering

B.E.Sc. (Western) 1995
Ph.D. (Western) 2000


DR GALSWORTHY’S research interests lie in the general area of wind engineering and structural dynamics for multi-phase systems. The main field of expertise is wind loads and effects on tall slender structures and damping systems.

Dr. Galsworthy is part of the Alan G. Davenport Wind Engineering Group at the Boundary Layer Wind Tunnel Laboratory (BLWTL). He is in the beginning stages of establishing a research program in three areas: full-scale validation and refinement of wind tunnel testing methods, buffeting of structures in the wake of upstream structures and damping systems to mitigate excessive wind-induced vibration. His interest in these areas has stemmed from experience with research projects at BLWTL.

The wind tunnel at Western is world renowned for solving a host of design problems faced by architects and engineers. The laboratory provides design data by combining experimental results from the wind tunnel and the statistical wind climate for locations around the world. A major research project is under way to take full-scale measurements of significant structures tested by the BLWTL to compare these predictions with in-situ behaviour. This monitoring will include wind speed measurements and motion at the top of the buildings. Another potential impact of this data is further study of the comfort of building occupants and thresholds of motion perception.

The construction of buildings in city environments and erection of tall chimneystacks in grouped arrangements leads to these structures being influenced by those around them. In the wake of upstream structures, turbulence is much higher and potentially leads to enhanced loads and thus higher amplitudes of motion on the downstream structure. Preliminary results suggest that the response of the structure in these situations is non-gaussian and the mechanisms for this are unclear.

Excessive wind-induced vibration can seriously impact the economy and safety of civil engineering structures. The approach often used to mitigate these vibrations is tuned mass dampers or tuned liquid dampers. Research is underway to develop new designs incorporating simple devices that exhibit highly nonlinear behaviour. Achieving general results for these devices will lead to economical solutions.

PROJECTS: Field measurements of 250m reinforced concrete chimneys in Ohio and North Dakota. Design of 250 tonne tuned mass damper in Hong Kong. Preliminary investigations of wake buffeting of a building in New Zealand.

KEYWORDS: wind engineering; structural dynamics; wind loads on tall buildings and towers; building occupant comfort; building wake turbulence and buffeting.

Also from this web page:

 

Contact Info

Western Engineering

Boundary Layer Wind Tunnel
Room number 105
Telephone: 519-661-3338
Fax: 519-661-3339
E-mail: jg@blwtl.uwo.ca