Graduate Thesis Or Dissertation
 

Tsunami Loading on Coastal Infrastructure

Público Deposited

Contenido Descargable

Descargar PDF
https://ir.library.oregonstate.edu/concern/graduate_thesis_or_dissertations/df65vf556

Descriptions

Attribute NameValues
Creator
Abstract
  • The safety of coastal infrastructure has been a concern after the Indian Ocean Tsunami in 2004 and the Great East Japan Tsunami in 2011. The western coast of the United States is also exposed to tsunami hazards due to the Cascadia subduction zone. Therefore, it is critical to design coastal infrastructure, bridges and buildings in particular, for tsunami loading. After a tsunami event, coastal bridges are critical to the transportation in securing the evacuation of people, sending equipment to destroyed area, and reconstructing essential facilities. However, general loading equations to design bridges are not available. Although loading equations for buildings are available, current research on tsunami loading on buildings is based on the assumption that buildings are rigid. To refine tsunami loading equations and investigate mitigation strategies, it is necessary to use numerical simulation in addition to experiments. An all-encompassing source-to-bridge simulation to determine bridge forces is not realistic due to the different scales between ocean shallow wave flow and localized bridge geometry. Thus, it is desirable to have an efficient approach to impart a wave of given height and velocity on a bridge model. In this research, a simplified numerical tsunami bore is proposed and validated. In order to provide enough samples to generate loading equations, the simplified bore is used to test bridge scenarios with different wave heights, bridge to standing water level (SWL) clearance and bridge configuration. In turn, loading equations on bridges are proposed with empirical coefficients. Good prediction of the tsunami loading equations to numerical bridge simulations is observed. Other factors that affect the tsunami loading on bridges such as superelevation, rail, and inclined surface of the bridge are considered as extra coefficients applied to the loading equations. To further examine the role of structural flexibility, a two-story flexible building model is tested with different inundation height and imparted with broken solitary waves while inundated in the OSU wave flume laboratory. It is found that as the inundation height increases, the fundamental period and damping ratio of the structure increases.
License
Resource Type
Fecha de Emisión
Degree Level
Degree Name
Degree Field
Degree Grantor
Commencement Year
Advisor
Committee Member
Academic Affiliation
Declaración de derechos
Publisher
Peer Reviewed
Language
Embargo reason
  • Intellectual Property (patent, etc.)
Embargo date range
  • 2020-01-22 to 2021-02-23

Relaciones

Parents:

This work has no parents.

En Collection:

Elementos

Miniatura Título Fecha de subida Visibilidad Acciones
file details XieZhongliang2020.pdf 2020-01-17 Público Descargar