Simulation of lateral-spread induced piled bridge abutment damage mechanism

Eleni Stergiopoulou, Jonathan Knappett, Liam Wotherspoon

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The Avondale Road Bridge in Christchurch, New Zealand was extensively damaged due to liq-uefaction and consequent lateral spreading induced by the Canterbury earthquake sequence (2010-2011). The deck acted as a prop, forcing the abutments to rotate around the deck-abutment connection, causing extensive plastic hinging within the foundation piles and also resulted in extensive settlement in the backfill. In order to further study this observed damage mechanism, key bridge parts were modelled at 1:50 scale including piles made of damageable model reinforced concrete (RC). The soil model was modelled on the layered profile of the south abutment, where the most severe damage was manifested. The model was designed, manufactured, assembled and tested in the University of Dundee (UoD) centrifuge facility. The centrifuge test validated the observed damage mechanism, including the pinning effect of the deck, abutment rotation and backfill settlement, providing a benchmark for future testing of possible retrofit solutions.
Original languageEnglish
Title of host publicationProceedings of the 3rd European Conference on Physical Modelling in Geotechnics (EUROFUGE 2016), Nantes, France, 1-3 June 2016
EditorsL Thorel, A Bretschneider, M Blanc, S Escoffier
PublisherIFSTTAR
Pages225-230
Number of pages6
Publication statusPublished - 2016

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Stergiopoulou, E., Knappett, J., & Wotherspoon, L. (2016). Simulation of lateral-spread induced piled bridge abutment damage mechanism. In L. Thorel, A. Bretschneider, M. Blanc, & S. Escoffier (Eds.), Proceedings of the 3rd European Conference on Physical Modelling in Geotechnics (EUROFUGE 2016), Nantes, France, 1-3 June 2016 (pp. 225-230). IFSTTAR.