00000cab a22000003a 4500 UP-99796217610121254 Buklod 20231008000405.0 a grb 001 u| ta 111118s xx d | ||r ||||| || DENG eng Katsaras, Christos Restoring capability of bilinear hysteretic seismic isolation systems. pp. 557-575 The restoring capability (or re-centering capability) is identified by the current design codes as a fundamental feature of seismic isolation systems. In this paper, the restoring capability of bilinear hysteretic or frictional seismic isolation systems is investigated in some detail. Certain energy considerations are examined first in order to provide insight into and reveal governing parameters on individual aspects of the problem. The restoring capability is then investigated through an extensive parametric study of smooth bilinear single degree of freedom hysteretic systems, with parameters covering a range of typical seismic isolation systems, subjected to a large group of recorded earthquakes. The results of the parametric analyses are processed statistically and regression analysis relations are derived that show the dependence of the residual displacement after the earthquake and the cumulative build up of displacements after a series of successive earthquakes on the governing parameters. Based on the analysis results, the features of the bilinear system that ensure sufficient restoring capability are identified. Seismic isolation. Hysteretic systems. Restoring capability. Re-centering. Residual displacement. Earthquake engineering & structural dynamics. 37, 4 (2008). FO UPD DENG Article