In this study, the optimal seismic design methodology which can consider the structural integrity of both the piping systems and the elasto-plastic supporting devices are developed. This methodology employs genetic algorithm and can search the optimal conditions such as the supporting location, the capacity and stiffness of the supporting devices. The lead extrusion damper is treated here as a typical elasto-plastic damper. Four kinds of evaluation functions; stress of piping systems, energy absorption, lead melt of dampers and energy absorbing balance are considered and each optimal condition is clarified and discussed. As the results, it is found that the optimal seismic design methodology proposed here is very effective and can be applied to the actual seismic designs for the piping systems supported by the elasto-plastic dampers, and can be also applied to the piping systems exposed to the actual earthquake waves which have various frequency components and the piping systems with a heavy local mass.
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ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference
July 23–27, 2006
Vancouver, BC, Canada
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
0-7918-4759-4
PROCEEDINGS PAPER
Application of Optimal Design Methodology on the Seismic Design of Piping Systems Supported by Elasto-Plastic Dampers
Tomohiro Ito,
Tomohiro Ito
Osaka Prefecture University, Sakai, Osaka, Japan
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Masashi Michiue,
Masashi Michiue
Osaka Prefecture University, Sakai, Osaka, Japan
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Katsuhisa Fujita
Katsuhisa Fujita
Osaka Prefecture University, Sakai, Osaka, Japan
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Tomohiro Ito
Osaka Prefecture University, Sakai, Osaka, Japan
Masashi Michiue
Osaka Prefecture University, Sakai, Osaka, Japan
Katsuhisa Fujita
Osaka Prefecture University, Sakai, Osaka, Japan
Paper No:
PVP2006-ICPVT-11-93259, pp. 313-319; 7 pages
Published Online:
July 23, 2008
Citation
Ito, T, Michiue, M, & Fujita, K. "Application of Optimal Design Methodology on the Seismic Design of Piping Systems Supported by Elasto-Plastic Dampers." Proceedings of the ASME 2006 Pressure Vessels and Piping/ICPVT-11 Conference. Volume 8: Seismic Engineering. Vancouver, BC, Canada. July 23–27, 2006. pp. 313-319. ASME. https://doi.org/10.1115/PVP2006-ICPVT-11-93259
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