Keywords and Phrases
Bridge; CFD simulation; Gable-roofed building; Straight-line winds; Tornadic winds
“Tornadoes are violent natural hazards that could caused significant property loss and fatalities. Statistical data indicates that most fatalities during tornado incidents were caused by the building failure under tornadoes. For example, in the 2011 Joplin Tornado, 161 people were killed, and 84 percent of the fatalities were related to the failure of buildings. In addition, most of the significant, tornado-induced property loss and fatalities are relevant to the tornadoes passing through the densely populated regions. Besides buildings, bridges were also severely damaged or destroyed by tornadoes in the United States. To reduce the tornado-induced loss, it is imperative to properly determine the tornado-induced wind effects on buildings and bridges and modify the wind pressure equations in the current design codes (ASCE7-16 for buildings and AASHTO for bridges). To achieve this objective, in this study, Computational Fluid Dynamic (CFD) simulations are employed to systematically investigate the wind effects on buildings and bridges induced by tornadic winds and their equivalent straight-line winds. First, tornado- induced wind effects on the single building and the building of interest located in a community are investigated and compared. Then, the wind effects on the building of interest caused by tornadic winds and their equivalent straight-line winds are extracted and compared. Next, the comparison of wind effects on bridges under tornadic winds and their equivalent straight-line winds are investigated. Finally, by comparing the wind effects on buildings, the current wind pressure equations in ASCE7-16 are properly modified to facilitate the tornado-resistant design for buildings. The same procedure is applied to modify the wind pressure equations in AASHTO for bridges”--Abstract, page iv.
Yan, Guirong Grace
Han, Daoru Frank
Civil, Architectural and Environmental Engineering
Ph. D. in Civil Engineering
Missouri University of Science and Technology
Journal article titles appearing in thesis/dissertation
- Proper Determination of Designing Tornadic Wind Loading on Civil Structures
- Influence of a Community of Buildings on Tornadic Wind Fields
- Investigation of Wind Effects on Bridges Induced by Tornadoes F or Tornado-Resistant Design
- Investigation of Tornadic Wind Effects on a Cable-Stayed Bridge for Guidance on Design Tornadic Wind Loading
xvii, 156 pages
© 2021 Zhi Li, All rights reserved.
Dissertation - Open Access
Li, Zhi, "Studies on tornado-structure interactions and guidance on design tornadic wind loading" (2021). Doctoral Dissertations. 3011.