22–24 Mar 2021
University of Zagreb Faculty of Civil Engineering, Zagreb, Croatia
Europe/Zagreb timezone

SEISMIC LIFE-CYCLE FUNCTIONAL RECOVERY ANALYSIS OF CORRODED REINFORCED CONCRETE BUILDINGS

Not scheduled
20m
VP (University of Zagreb Faculty of Civil Engineering, Zagreb, Croatia)

VP

University of Zagreb Faculty of Civil Engineering, Zagreb, Croatia

Kačićeva 26 10 000 Zagreb
Seismic Performance of Structures

Speaker

Prof. Yue Li (Case Western Reserve University)

Description

Rapid economic and population growth in high-seismic regions and increased vulnerability of aging infrastructure has raised seismic risk around the globe. Recently, functional recovery paradigm has been introduced as a holistic approach to include not only conventional safety criteria but also novel resilience measures in seismic performance assessment and design of buildings. This paper presents a new component-based seismic multi-dimensional functional recovery analysis method for reinforced concrete (RC) building structures and explores corrosion impact on its lifecycle functionality. Various structural and non-structural components affecting occupancy or serviceability of the building are included in loss analysis using FEMA P-58 fragility specification database. Multi-dimensional functionality curves, including asset, occupancy, and serviceability functionality curves, are developed to depict the post-earthquake recovery path. A new method is introduced to evaluate a holistic resilience index evaluated based on functionality curves. Intensity-based approach is used to quantify seismic monetary loss and downtime. Time-history and incremental dynamic analyses are used to develop fragility functions. A set of 4-story RC building archetypes located in a high seismic region are studied. Further, the impact of corrosion in various stories on seismic resilience and functional recovery of RC frames is studied. Uncertainty in demand, modelling, and component-level seismic losses are included. Finite element models of corroded and uncorroded RC archetypes are developed in OpenSees. The recently developed SFI-MVLEM element is used to model the dynamic nonlinear behavior of shear walls. Results indicate that high-intensity earthquakes result in significant loss of occupancy while low-intensity earthquakes cause a noticeable loss of serviceability and minor loss of occupancy.

DOI https://doi.org/10.5592/CO/1CroCEE.2021.95
Keywords Seismic Resilience, Functional Recovery, Life-cycle Assessment, Corrosion, RC Buildings

Primary authors

Dr Esmaeel Asadi (Kent State University) Prof. Edgar Emilio Bastidas Arteaga (University of La Rochelle) Prof. Yue Li (Case Western Reserve University)

Presentation materials