Seismic Fragility Reduction for Base Isolated RC Frame Buildings by Curved Surface Sliding Bearings with Over-Stroke Displacement Capacity

Journal of Earthquake Engineering, Journal Year: 2024, Volume and Issue: 28(12), P. 3432 - 3446

Published: April 11, 2024

Recently, experimental studies on failure conditions of buildings equipped with curved surface sliding isolators have shown that when no displacement restraining elements are employed and the concave plates feature a flat rim, inner slider can run edge surfaces producing lateral larger than nominal isolator capacity. The over-stroke capacity reduces probability seismic collapse code-conforming base-isolated for earthquake stronger design one. In order to quantify benefit double (DCCSS) bearings fragility base isolated buildings, four case six-storey reinforced concrete framed structures, consisting new constructions retrofit existing structures located in high medium hazard sites, been investigated this paper. all cases, two configurations isolation system considered, end-stop or performance has by multi-stripe nonlinear time-history analysis. results dynamic analysis at limit state compared static terms maximum corresponding shear. Fragility curves highlight higher safety margin against intensities beyond

Language: Английский

Multi-stripe Dynamic Analysis of Existing RC Buildings Seismically Retrofitted by Base Isolation or Dissipative Bracing Systems Conforming to Italian Code

Lecture notes in civil engineering, Journal Year: 2024, Volume and Issue: unknown, P. 267 - 276

Published: Jan. 1, 2024

Language: Английский