Optimum Characteristics of Isolated Structures
- 1 December 1985
- journal article
- Published by American Society of Civil Engineers (ASCE) in Journal of Structural Engineering
- Vol. 111 (12) , 2733-2750
- https://doi.org/10.1061/(asce)0733-9445(1985)111:12(2733)
Abstract
The effect of frequency content of the ground excitation on the optimum design of a base isolation system and a first‐story damping system is investigated. The ground excitation is modeled as a filtered white noise with Kanai‐Tajimi power spectral density. The stationary response, including peak response, is derived in closed form. Small “ground frequencies” result in considerable differences of the optimum design as compared with the one based on a white noise model of the excitation. Examples show the manner of applying the results to an ordinary two‐story structure. Time‐history analyses of the optimized structures confirm the results of the stochastic analysis.Keywords
This publication has 13 references indexed in Scilit:
- Optimum design of a first story damping systemComputers & Structures, 1983
- Probabilistic Optimum Base Isolation of StructuresJournal of Structural Engineering, 1983
- Calculation of Power Spectra from Response SpectraJournal of Engineering Mechanics, 1983
- Experimental study of lead and elastomeric dampers for base isolation systems in laminated Neoprene bearingsBulletin of the New Zealand Society for Earthquake Engineering, 1982
- Optimum absorber parameters for various combinations of response and excitation parametersEarthquake Engineering & Structural Dynamics, 1982
- Seismic Effectiveness of Tuned Mass DampersJournal of the Structural Division, 1981
- Base isolation systems for earthquake protection of multi-storey shear structuresEarthquake Engineering & Structural Dynamics, 1979
- b values and ω−γ seismic source models: Implications for tectonic stress variations along active crustal fault zones and the estimation of high‐frequency strong ground motionJournal of Geophysical Research, 1979
- Tuned Mass Dampers for BuildingsJournal of the Structural Division, 1977
- Safety design concepts for seismic structuresComputers & Structures, 1973