TY - JOUR
T1 - Integral abutment bridges
T2 - Investigation of seismic soil-structure interaction effects by shaking table testing
AU - Fiorentino, Gabriele
AU - Cengiz, Cihan
AU - De Luca, Flavia
AU - Mylonakis, George
AU - Karamitros, Dimitris
AU - Dietz, Matt
AU - Dihoru, Luiza
AU - Lavorato, Davide
AU - Briseghella, Bruno
AU - Isakovic, Tatjana
AU - Vrettos, Christos
AU - Topa Gomes, Antonio
AU - Sextos, Anastasios
AU - Nuti, Camillo
N1 - Funding Information:
This research was conducted under the auspices of Seismic Response of Novel Integral Abutment-Bridges (SERENA) project, funded by the EU H2020 under grant agreement number 730900 (SERA), with George Mylonakis as Principal Investigator for University of Bristol. The authors gratefully acknowledge the DPC-ReLUIS consortium for the financial support within the framework of the 2014-2018 and 2019-2021 Research Projects, the National Natural Science Foundation of China (grant number: 51778148), Federbeton (Italy) for financial support for 'Seismic Behaviour of Integral Bridges', as well as the contribution of the personnel at EQUALS laboratory, University of Bristol. Finally, the authors would also like to thank Georgia De Benedetti and Francesco Lolli for their cooperation during the experimental campaign at the University of Bristol.
Funding Information:
This research was conducted under the auspices of Seismic Response of Novel Integral Abutment‐Bridges (SERENA) project, funded by the EU H2020 under grant agreement number 730900 (SERA), with George Mylonakis as Principal Investigator for University of Bristol. The authors gratefully acknowledge the DPC‐ReLUIS consortium for the financial support within the framework of the 2014‐2018 and 2019‐2021 Research Projects, the National Natural Science Foundation of China (grant number: 51778148), Federbeton (Italy) for financial support for 'Seismic Behaviour of Integral Bridges', as well as the contribution of the personnel at EQUALS laboratory, University of Bristol. Finally, the authors would also like to thank Georgia De Benedetti and Francesco Lolli for their cooperation during the experimental campaign at the University of Bristol.
Publisher Copyright:
© 2020 The Authors. Earthquake Engineering & Structural Dynamics published by John Wiley & Sons Ltd.
PY - 2021/5
Y1 - 2021/5
N2 - In recent years there has been renewed interest on integral abutment bridges (IABs), mainly due to their low construction and maintenance cost. Owing to the monolithic connection between deck and abutments, there is strong soil-structure interaction between the bridge and the backfill under both thermal action and earthquake shaking. Although some of the regions where IABs are adopted qualify as highly seismic, there is limited knowledge as to their dynamic behaviour and vulnerability under strong ground shaking. To develop a better understanding on the seismic behaviour of IABs, an extensive experimental campaign involving over 75 shaking table tests and 4800 time histories of recorded data, was carried out at EQUALS Laboratory, University of Bristol, under the auspices of EU-sponsored SERA project (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The tests were conducted on a 5 m long shear stack mounted on a 3 m × 3 m 6-DOF earthquake simulator, focusing on interaction effects between a scaled bridge model, abutments, foundation piles and backfill soil. The study aims at (a) developing new scaling procedures for physical modelling of IABs, (b) investigating experimentally the potential benefits of adding compressible inclusions (CIs) between the abutment and the backfill and (c) exploring the influence of different types of connection between the abutment and the pile foundation. Results indicate that the CI reduces the accelerations on the bridge deck and the settlements in the backfill, while disconnecting piles from the cap decreases bending near the pile head.
AB - In recent years there has been renewed interest on integral abutment bridges (IABs), mainly due to their low construction and maintenance cost. Owing to the monolithic connection between deck and abutments, there is strong soil-structure interaction between the bridge and the backfill under both thermal action and earthquake shaking. Although some of the regions where IABs are adopted qualify as highly seismic, there is limited knowledge as to their dynamic behaviour and vulnerability under strong ground shaking. To develop a better understanding on the seismic behaviour of IABs, an extensive experimental campaign involving over 75 shaking table tests and 4800 time histories of recorded data, was carried out at EQUALS Laboratory, University of Bristol, under the auspices of EU-sponsored SERA project (Seismology and Earthquake Engineering Research Infrastructure Alliance for Europe). The tests were conducted on a 5 m long shear stack mounted on a 3 m × 3 m 6-DOF earthquake simulator, focusing on interaction effects between a scaled bridge model, abutments, foundation piles and backfill soil. The study aims at (a) developing new scaling procedures for physical modelling of IABs, (b) investigating experimentally the potential benefits of adding compressible inclusions (CIs) between the abutment and the backfill and (c) exploring the influence of different types of connection between the abutment and the pile foundation. Results indicate that the CI reduces the accelerations on the bridge deck and the settlements in the backfill, while disconnecting piles from the cap decreases bending near the pile head.
KW - compressible inclusion
KW - integral abutment bridges
KW - pile-to-cap connection
KW - shaking table testing
KW - soil structure interaction
UR - http://www.scopus.com/inward/record.url?scp=85097629694&partnerID=8YFLogxK
U2 - 10.1002/eqe.3409
DO - 10.1002/eqe.3409
M3 - Article
AN - SCOPUS:85097629694
SN - 0098-8847
VL - 50
SP - 1517
EP - 1538
JO - Earthquake Engineering and Structural Dynamics
JF - Earthquake Engineering and Structural Dynamics
IS - 6
ER -
