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Optimum Design of Curved Surface Sliders Based on Site-Specific Seismic Input and Its Sensitivity

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Maurer Switzerland GmbH, Neptunstrasse 25, 8032 Zurich, Switzerland
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MAURER ENGINEERING GmbH, Frankfurter Ring 193, 80807 Munich, Germany
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MAURER SE, Frankfurter Ring 193, 80807 Munich, Germany
*
Author to whom correspondence should be addressed.
Geosciences 2018, 8(3), 83; https://doi.org/10.3390/geosciences8030083
Received: 20 January 2018 / Revised: 21 February 2018 / Accepted: 22 February 2018 / Published: 27 February 2018
The design of curved surface sliders (CSS) based on the elastic response spectrum method with site-specific seismic input is commonly made by trial and error, whereby the design does not necessarily minimize structural acceleration. This paper therefore describes the optimum CSS design for minimum structural acceleration for given site-specific seismic input. All valid CSS designs and the optimum CSS design are represented by their associated trajectory in the elastic response spectrum plane that visualizes the optimization problem. The results demonstrate that the optimum CSS design is not obtained at maximum tolerated effective damping ratio. The subsequent sensitivity analysis describes how much the structural acceleration increases if the actual friction coefficient of the real CSS deviates from its optimum design value. The analysis points out that the increase in structural acceleration is approximately one order of magnitude smaller than the deviation in friction. The sensitivity data may be used by structural engineers to determine tolerable deviations in friction coefficient ensuring acceptable structural accelerations. View Full-Text
Keywords: curved surface slider; elastic response spectrum; friction; optimization; sensitivity curved surface slider; elastic response spectrum; friction; optimization; sensitivity
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Weber, F.; Meier, L.; Distl, J.; Braun, C. Optimum Design of Curved Surface Sliders Based on Site-Specific Seismic Input and Its Sensitivity. Geosciences 2018, 8, 83.

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