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Wave-Current Impulsive Debris Loading on a Coastal Building Array
| 题名： | Wave-Current Impulsive Debris Loading on a Coastal Building Array |
| 正文语种： | eng |
| 作者： | Joaquin P. Moris;Olivia Burke;Andrew B. Kennedy;Joannes J. Westerink |
| 作者单位： | Departamento de Ingenieria Civil Facultad de Ciencias de Ingenieria y Construccion Universidad Catolica del Norte Avenida Angamos 0610 Antofagasta Chile;Univ. of Notre Dame Notre Dame IN 46556;Univ. of Notre Dame 168 Fitzpatrick Hall Notre Dame IN 46556;Univ. of Notre Dame 303a Cushing Hall Notre Dame IN 46556 |
| 摘要： | Waterborne debris impacts during inundation events are a widely observed threat to structures in coastal communities. This study investigates the probability of impact and magnitude of wave-current (N= 1,170) and current-only (N = 156) debris events on exposed and sheltered buildings within a 10 × 10 building array, using laboratory measurements of structural loading response, flow hydrodynamics, and video recordings of flow transport and impact. A methodology based on a structural system with a single degree of freedom is implemented to estimate the applied debris impulse from collisions and to investigate the dynamic impact of waterborne debris on structures. Results show mat the debris collision probability varies greatly, between 42% for unsheltered rows and 2% for nine rows of sheltering. Given a collision, the normalized debris impulse in sheltered buildings is at maximum 0.8 times the impulse for unsheltered conditions, and this reduction increases as the number of sheltering rows increases. Using empirical exceedance probabilities of the applied debris impulse, a framework is developed to estimate the maximum structural loading response within a building array, along with a comparison with data and existing standards. The effect of the impact duration on the relation between the applied debris impulse and the maximum structural response is also discussed. |
| 出版年： | 2023 |
| 期刊名称： | Journal of Waterway, Port, Coastal and Ocean Engineering |
| 卷： | 149 |
| 期： | 1 |
| 页码： | 04022025.1-04022025.19 |
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