Abstract
The new ASCE 7-16 Chapter 6 offers a comprehensive and practical methodology for the design of structures for tsunami loads and effects. While it provides prescriptive tsunami loading and design requirements, Chapter 6 also allows for the use of performance-based nonlinear analysis tools. However, the specifics of load application protocol and system and component evaluation for such a nonlinear approach are not provided. This paper presents a procedure for performing nonlinear static pushover analysis for tsunami loading within the framework of the ASCE 7-16 standard. Through this approach, the user can both estimate the effective systemic lateral load-resisting capacity of a building and the local component demand. This enables the identification of deficiencies in structural elements with respect to the ASCE 7-16 standard acceptance criteria. To demonstrate the procedure, a prototypical reinforced concrete multistory building exposed to high tsunami hazard on the US Northwest Pacific Coast is assessed. This is a building with sufficient height to provide last-resort refuge for people having insufficient time to evacuate outside the inundation zone. The results of the nonlinear static pushover analyses show that the structural system has sufficient lateral strength to resist ASCE 7-16 prescribed tsunami loads, but fails the checks for component-based loading, with the exterior ground-story columns observed to fail in flexure and shear. The example demonstrates that use of the tsunami nonlinear static analysis procedure allows the identification of structural deficiencies such that a targeted strengthening of the building can be conducted (i.e., flexural and shear strengthening of the seaward and inland columns for the case study building presented), leading to significantly reduced costs.
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Data Availability Statement
All data, models, and code that support the findings of this study are available from the corresponding author upon reasonable request.
Acknowledgments
The research work presented in this paper was funded by the European Research Council, ERC Grant Agreement 336084 URBANWAVES, awarded to Professor Tiziana Rossetto. The authors are grateful to Mr. Jacob McKamey for his assistance in this research. The authors also acknowledge Willis Research Network for supporting the time of Dr. Crescenzo Petrone and Dr. Marco Baiguera.
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Information & Authors
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Published In
Journal of Structural Engineering
Volume 148 • Issue 2 • February 2022
Copyright
© 2021 American Society of Civil Engineers.
History
Received: Aug 21, 2020
Accepted: Oct 7, 2021
Published online: Nov 26, 2021
Published in print: Feb 1, 2022
Discussion open until: Apr 26, 2022
ASCE Technical Topics:
- ASCE 7
- Buildings
- Business management
- Construction engineering
- Construction management
- Continuum mechanics
- Design (by type)
- Disaster risk management
- Disasters and hazards
- Dynamic loads
- Dynamics (solid mechanics)
- Engineering fundamentals
- Engineering mechanics
- Lateral loads
- Load factors
- Natural disasters
- Nonlinear analysis
- Organizations
- Practice and Profession
- Professional societies
- Solid mechanics
- Standards and codes
- Structural analysis
- Structural design
- Structural dynamics
- Structural engineering
- Structures (by type)
- Tsunamis
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Cited by
- Nicolette S. Lewis, Dawn E. Lehman, Michael R. Motley, Pedro Arduino, Charles W. Roeder, Christopher N. Pyke, Kenneth P. Sullivan, Integrated Study of Existing Tsunami Design Standards, Journal of Structural Engineering, 10.1061/(ASCE)ST.1943-541X.0003506, 148, 12, (2022).