Physical model of an Integral Abutment bridge: Numerical and experimental analyses

Gabriele Fiorentino, Davide Lavorato, Camillo Nuti, Flavia De Luca, Cihan Cengiz, Anastasios Sextos, George Mylonakis, Bruno Briseghella

Research output: Contribution to conferenceConference Paperpeer-review

Abstract

Integral Abutment Bridges (IABs) are characterized by the absence of bearing supports and expansion joints between the deck and the abutments/piers, thus reducing the construction and maintenance costs of these structures. This type of connection leads to more complex Soil-Structure Interaction (SSI) with respect to conventional bridges, therefore the static and dynamic effects of the SSI should be taken into account in the design. Despite the large number of IABs worldwide, and the numerical studies about them, only few experimental tests were performed and, moreover, there is a lack of design prescriptions in seismic codes including Eurocodes. This work presents results regarding the experimental campaign carried out at the EQUALS-BLADE Laboratory of the University of Bristol under the auspices of SERENA-SERA-TA Project, featuring shaking table tests on a scaled physical model of a single span IAB, tested into a large shear soil container to reproduce natural soil conditions and simulate the SSI between the abutments and the backfill soil. Different configurations were tested, varying i) the type of connection between the abutment footing (connected and disconnected) and ii) the introduction of one or more layers of a compressible inclusion material between the abutments and the backfill soil.
Original languageEnglish
Pages3089-3094
Number of pages6
DOIs
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This research was conducted under the auspices of Seismic Response of Novel Integral Abutment-Bridges (SERENA) project. SERENA project was funded by the EU H2020 under grant agreement number 730900 [SERA]. The authors gratefully acknowledge the DPC-ReLUIS consortium for the financial support within the framework of the 2014-2018 and of the 2019-2021 Research Projects.

Publisher Copyright:
© 2021 Taylor & Francis Group, London

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