Opabola, E;
Galasso, C;
Rossetto, T;
(2022)
Influence of Earthquake-Tsunami Sequence Induced Corrosion on Residual Seismic Capacity of Concrete Structures.
In:
Proceedings of the 12th National Conference in Earthquake Engineering.
Earthquake Engineering Research Institute: Salt Lake City, UT, USA.
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Abstract
Field investigations have highlighted the high likelihood of chloride ingress in reinforced concrete (RC) buildings submerged by seawater and covered by mud during an earthquake-tsunami (EQ-TS) sequence. Chloride attack through EQ-induced cracks or spalling can cause a high corrosion rate in the reinforcement, thereby compromising the long-term durability of the structure and its performance in future events. Typically, this deterioration process is neglected when assessing the future performance of frame structures in tectonically-active coastal regions. This study demonstrates the influence of EQ-TS-induced corrosion on the residual seismic capacity of modern RC frame structures. The analyses show an undesirable component-level failure mode switch to a shear-dominated mechanism. The median collapse fragility of the frame is also seen to be significantly influenced by the reinforcement corrosion. The outcome of this study raises questions on the post-tsunami management of both modern and older-type RC frame structures.
| Type: | Proceedings paper |
|---|---|
| Title: | Influence of Earthquake-Tsunami Sequence Induced Corrosion on Residual Seismic Capacity of Concrete Structures |
| Event: | 12th National Conference on Earthquake Engineering, NCEE 2022 |
| Open access status: | An open access version is available from UCL Discovery |
| Publisher version: | https://12ncee.org/program/proceedings |
| Language: | English |
| Additional information: | This version is the version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Civil, Environ and Geomatic Eng |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10161609 |
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