An Introduction to Seismic IsolationWiley, 6 Tem 1993 - 376 sayfa These authors present much sought after information on the design procedures for seismically isolated structures. Using a logical progression, they describe seismic isolation along with the concepts of earthquake structural dynamics underlying the isolation theory. Methods discussed will provide the basis for continuing development and refinement. |
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INTRODUCTION | 1 |
GENERAL FEATURES OF STRUCTURES WITH | 16 |
15 | 44 |
Telif Hakkı | |
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acceleration analysis approach approximately base shear bearings bilinear bridge building calculated Centro changes Chapter combined components considerable considered continued contributions corresponding curves dampers damping defined deformation discussed displacement distribution earthquake effective elastic elastic-phase energy Equation equipment estimated example excitation expressions Figure first-mode flexibility floor force free-free frequency give given greater ground height hence higher higher-mode horizontal hysteretic important increase isolated structure isolation system Italy lead lead-rubber bearings linear isolation loads loop mass maximum modal mode shapes moderate motion mounted natural non-linear obtained occur overall parameters participation factors peak period phase primary produce Qy/W range ratio reduced relative respectively rubber scaled secondary system seismic isolation seismic responses shows similar spectra steel stiffness strain superstructure Table torsional tuned unisolated usually values various viscous yield