Seminar on Structural Control with Applications to Special Structures
Speaker: Marco Domaneschi, Civil & Environmental Engineering, Politecnico di Milano, Italy
Series: MMS Brown Bag Seminars
Location: Engineering Quad E219
Date/Time: Tuesday, September 3, 2013, 12:30 p.m. - 1:30 p.m.
Special structures, such as long-span bridges or power plants, currently play a fundamental role in social growth and economic transformation, becoming themselves strategic structures. Their protection against external dynamic loading is recognized as essential. Structural Control and Health Monitoring can offer useful solutions.
Passive and semi-active Structural Control approaches have been shown able to deal both with extreme events (strong earthquake and hurricanes) but also with actions characterized by relatively low intensity and high probability (breeze-gale winds). For the first class of actions, they can give an important contribution to the structural stability and safety in general, for the second one they allow to extend the expected life (e.g. reducing fatigue in welded connection of the metallic elements), reduce maintenance, or to improve the comfort by mitigating the vibration perception (e.g. pedestrian induced vibration in slender footbridges).
Structural Health Monitoring procedures represents also a crucial tools for the special structure assessment when specific methodologies are implemented for detecting and localizing damages (diagnosis), quantifying damage intensity and expected life (prognosis).
The seminar covers some essential issues which can be summarized as follows:
1. Structural control devices: characterization and modelling
2. Long span bridges: structural control under seismic and wind excitation
3. Damage detection and localization in a long-span suspension bridge deck
4. Fragility computation of seismic base isolated and non-isolated nuclear power plants
The approaches herein presented are mainly at a numerical level with digressions to physical problems. The following references can be of interest in a subsequent deepening.
Marco Domaneschi (born 1972) received his MSc and PhD degree from the University of Pavia, Italy. He is author of about ninety published works in scientific international journals and congress proceedings. Now he is research associate and lecturer at the Department of Civil and Environmental Engineering at Politecnico di Milano.