Seismic fragility curves for greek bridges: methodology and case studies |
| |
| Authors: | Ioannis F Moschonas Andreas J Kappos Panagiotis Panetsos Vissarion Papadopoulos Triantafyllos Makarios Pavlos Thanopoulos |
| |
| Institution: | (1) Department of Civil Engineering, Aristotle University of Thessaloniki, Thessaloniki, Greece;(2) EGNATIA ODOS SA, Thessaloniki, Greece;(3) School of Civil Engineering, National Technical University, Athens, Greece;(4) ITSAK, Institute of Engineering Seismology and Earthquake Engineering, Thessaloniki, Greece;(5) DOMI SA, Athens, Greece |
| |
| Abstract: | This study focusses on the estimation of seismic fragility curves for all common bridge types found in modern greek motorways.
At first a classification scheme is developed in order to classify the existing bridges into a sufficient number of classes.
A total of 11 representative bridge classes resulted, based on the type of piers, deck, and pier-to-deck connection. Then
an analytical methodology for deriving fragility curves is proposed and applied to the representative bridge models. This
procedure is based on pushover analysis of the entire bridge and definition of damage states in terms of parameters of the
bridge pushover curves. The procedure differentiates the way of defining damage according to the seismic energy dissipation
mechanism in each bridge, i.e. bridges with yielding piers of the column type and bridges with bearings (with or without seismic
links) and non-yielding piers of the wall type. The activation of the abutment-backfill system due to closure of the gap between
the deck and the abutments is also taken into account. The derived fragility curves are subjected to a first calibration against
empirical curves based on damage data from the US and Japan. |
| |
| Keywords: | Bridges Vulnerability assessment Fragility curves Bridge classification Pushover analysis Damage states |
| 本文献已被 SpringerLink 等数据库收录！ |
|
