Next Article in Journal
Swin Transformer for Complex Coastal Wetland Classification Using the Integration of Sentinel-1 and Sentinel-2 Imagery
Next Article in Special Issue
Effects of Barrier Stiffness on Debris Flow Dynamic Impact—II: Numerical Simulation
Previous Article in Journal
Free Global DEMs and Flood Modelling—A Comparison Analysis for the January 2015 Flooding Event in Mocuba City (Mozambique)
Previous Article in Special Issue
Numerical Investigation of Surge Waves Generated by Submarine Debris Flows
 
 
Article

Effects of Barrier Stiffness on Debris Flow Dynamic Impact—I: Laboratory Flume Test

by 1,2,*, 1 and 1
1
Department of Geotechnical Engineering, College of Civil Engineering, Tongji University, Shanghai 200092, China
2
Key Laboratory of Geotechnical and Underground Engineering of the Ministry of Education, Tongji University, Shanghai 200092, China
*
Author to whom correspondence should be addressed.
Academic Editor: Maria Mimikou
Water 2022, 14(2), 177; https://doi.org/10.3390/w14020177
Received: 23 November 2021 / Revised: 29 December 2021 / Accepted: 5 January 2022 / Published: 10 January 2022
(This article belongs to the Special Issue Mechanism and Prevention of Debris Flow Disaster)
Debris flows often cause local damage to engineering structures by exerting destructive impact forces. The debris-flow–deformable-barrier interaction is a significant issue in engineering design. In this study, a large physical flume model test device was independently designed to repeatedly reproduce the flow and impact process of debris flow. Three physical flume tests were performed to investigate the effect of barrier stiffness on the debris flow impact. The flow kinematics of debris flow with three barrier stiffness values are essentially consistent with the process of impact–run-up–falling–pile-up. The development of a dead zone provided a cushion to diminish the impact of the follow-up debris flow on the barrier. The peak impact forces were attenuated as the barrier stiffness decreased. The slight deflections of a deformable barrier were sufficiently effective for peak load attenuation by up to 30%. It showed that the decrease of the barrier stiffness had a buffer effect on the debris flow impact and attenuated the peak impact force. And with the decrease of the barrier stiffness, when the barrier was impacted by the same soil types, the recoverable elastic strain will be larger, and the strain peak will be more obvious. View Full-Text
Keywords: deformable barrier; debris flow; flume tests; impact deformable barrier; debris flow; flume tests; impact
Show Figures

Figure 1

MDPI and ACS Style

Huang, Y.; Jin, X.; Ji, J. Effects of Barrier Stiffness on Debris Flow Dynamic Impact—I: Laboratory Flume Test. Water 2022, 14, 177. https://doi.org/10.3390/w14020177

AMA Style

Huang Y, Jin X, Ji J. Effects of Barrier Stiffness on Debris Flow Dynamic Impact—I: Laboratory Flume Test. Water. 2022; 14(2):177. https://doi.org/10.3390/w14020177

Chicago/Turabian Style

Huang, Yu, Xiaoyan Jin, and Junji Ji. 2022. "Effects of Barrier Stiffness on Debris Flow Dynamic Impact—I: Laboratory Flume Test" Water 14, no. 2: 177. https://doi.org/10.3390/w14020177

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop