TY - JOUR
T1 - Experimental Investigation of Loading due to Debris Dams on Structures
AU - Mauti, Gabriella
AU - Stolle, Jacob
AU - Takabatake, Tomoyuki
AU - Nistor, Ioan
AU - Goseberg, Nils
AU - Mohammadian, Abdolmajid
N1 - Funding Information:
The authors acknowledge financial support for this study provided through the Ontario Graduate Scholarship (Gabriella Mauti), the Natural Sciences and Engineering Research Council (NSERC) CGS-D Scholarship (Jacob Stolle), and the NSERC Discovery Grant (Ioan Nistor and Majid Mohammadian). The authors also thank the University of Ottawa technical staff, Mark Lapointe and Leo Denner, for their laboratory assistance throughout the project. A part of the present work was performed as a part of the activities of the Research Institute of Sustainable Future Society, Waseda Research Institute for Science and Engineering, Waseda University.
Publisher Copyright:
© 2020 American Society of Civil Engineers.
PY - 2020/5/1
Y1 - 2020/5/1
N2 - The entrainment of debris in tsunami-induced floods and storm surges can result in their accumulation on structures, a phenomenon known as debris damming. Such dams can decrease the stability of the affected structures by increasing the area of the flow obstruction, resulting in increased resistance forces. The formation of debris dams can also result in upstream water level rise. This study investigated the influence of idealized debris dam geometry on induced loads and changes in the free surface surrounding a circular column in steady-state flow conditions. Additionally, it investigated the resistance force coefficient of the debris dams. Results show that the presence of debris dams results in a significant increase of loading on structures. The increase in the resistance force was up to 7.7 times greater than the resistance force acting on the column with no debris present. The resistance force coefficients and the change in water depth were functions of the relative dam height and the Froude number, while the porosity had an insignificant impact on the effective resistance force coefficients.
AB - The entrainment of debris in tsunami-induced floods and storm surges can result in their accumulation on structures, a phenomenon known as debris damming. Such dams can decrease the stability of the affected structures by increasing the area of the flow obstruction, resulting in increased resistance forces. The formation of debris dams can also result in upstream water level rise. This study investigated the influence of idealized debris dam geometry on induced loads and changes in the free surface surrounding a circular column in steady-state flow conditions. Additionally, it investigated the resistance force coefficient of the debris dams. Results show that the presence of debris dams results in a significant increase of loading on structures. The increase in the resistance force was up to 7.7 times greater than the resistance force acting on the column with no debris present. The resistance force coefficients and the change in water depth were functions of the relative dam height and the Froude number, while the porosity had an insignificant impact on the effective resistance force coefficients.
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U2 - 10.1061/(ASCE)HY.1943-7900.0001731
DO - 10.1061/(ASCE)HY.1943-7900.0001731
M3 - Article
AN - SCOPUS:85080859088
SN - 0733-9429
VL - 146
JO - American Society of Civil Engineers, Journal of the Hydraulics Division
JF - American Society of Civil Engineers, Journal of the Hydraulics Division
IS - 5
M1 - 04020029
ER -