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Date
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27 FEBRUARY 2013
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Time
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18:00 - 20:00
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Event Type
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Associated Society
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Seismic performance objectives are continuously changing due to the devastating effects of earthquakes. This is inspiring new design and retrofit methods, which aim to reduce or isolate damage even for very large earthquakes. In this presentation, the ability of 'rocking' to isolate the structure from the ground motion will be considered.
Initially, the hypothesis that rocking motion can explain why some historic buildings have withstood large earthquakes without collapse will be assessed. In particular, the collapse of example masonry structures will be evaluated from the perspective of rocking dynamics. Within this context, the fundamental characteristics which govern rocking motion will be presented, including ground motion characteristics which maximize rocking response. The possibility of adding damping to limit the rocking response will then be considered in light of current efforts to use rocking motion for retrofit and design of new structures. Finally, ongoing work towards developing rocking response spectra for this purpose will be presented.
Non-members are welcome.
Please note that there is no charge to attend.
Seats are allocated on a first come, first served basis.
For further information please contact the SECED Secretary at the ICE on:
Tel: +44 (0) 20 7665 2229 or Fax: +44 (0) 20 7799 1325 or Email: secretary@seced.org.uk
Visit the SECED website at www.seced.org.uk
Speaker:
Dr Matthew DeJong (PI) is a Lecturer in Structural Engineering at the University of Cambridge, where he leads a research group primarily focused on masonry structures and structural dynamics. He is currently completing an EPSRC funded research project entitled ‘Retrofit of Rocking Structures’, through which he has continued work on experimental, analytical, and computational modeling of rocking behavior. This work is part of more general research interests in experimental and computational modelling of masonry, which has included development finite element modelling procedures for brittle materials which exhibit softening behavior. Prior to his current appointment, he earned his MS and PhD at the Massachusetts Institute of Technology and was a Fulbright Scholar at TU Delft in the Netherlands. Before these research endeavors, he worked as a structural engineering design consultant in California. He is also actively involved in consulting through ODB Engineering (http://odb-engineering.com).
Disclaimer: Any views or opinions expressed on any matters by the presenters or participants during or in connection with this presentation are solely the views of the authors of the respective comments and/or opinions and must not be taken to be the views of ICE or any other organisation. ICE makes no representations, warranties or assurances concerning any information provided in these presentations and accepts no responsibility for the content and/or accuracy.