Debris impact under extreme hydrodynamic conditions part 2: Impact force responses for non-rigid debris collisions

Stolle, Jacob; Derschum, C.; Goseberg, Nils; Nistor, Ioan; Petriu, Emil M.

doi:10.1016/j.coastaleng.2018.09.004

Cited by 30 publications

(16 citation statements)

References 29 publications

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“…Often in experiments a breaking bore is assumed either generated through dam breaks (see e.g. Yeh, 1991;Derschum et al, 2018;Stolle et al, 2018) or as a result of breaking elongated solitary waves (see e.g. Goseberg et al, 2016;Nistor et al, 2017), but a tsunami can run-up in other ways as well.…”

Section: Introductionmentioning

confidence: 99%

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Larsen

Fuhrman

2019

Coastal Engineering

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Section: Introductionmentioning

confidence: 99%

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Larsen

Fuhrman

2019

Coastal Engineering

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“…The experiments were performed within the context of a larger experimental protocol examining debris impact forces on a structure (Derschum et al 2018, Stolle et al 2018a, 2018c, 2019. The structure (0.20 m × 0.20 m × 0.80 m) was placed at a distance of 7.03 m from the gate.…”

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 99%

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Stolle

Nistor

Goseberg

et al. 2020

J. Waterway, Port, Coastal, Ocean Eng.

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Past hydraulic and structural design has predominantly used deterministic methods, often neglecting the stochastic nature that underlies transient loading processes. Nowadays, probabilistic design methods have gained wider attention. The accurate estimates of design conditions for structures need to consider the probabilistic properties of the loads. One of the more challenging loads in extreme flooding events is related to debris transport and loading during hydrodynamic hazardous events. While crucial to assess damage on infrastructure as part of the design cycle, field surveys and numerical modeling provide little guidance as to how the motion of debris within these natural disasters can be adequately captured. The study presented herein examines an idealized case regarding the transport of debris entrained during extreme flooding events by evaluating the characteristics of shipping containers motion entrained in a dam-break flow over a flat, horizontal bed. In aiding the promotion of probabilistic methods, this study proposes characteristics of the stochastic properties of debris transport, focussing on the lateral displacement and velocity of debris based on the experimental results. The magnitude of the lateral displacement was shown to strongly correlate with the local hydrodynamic conditions and the initial configuration of the debris. The results of the physical model were then incorporated into a probabilistic framework. The aim for developing this framework is to facilitate debris hazard assessment in extreme flooding event studies.

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“…For debris force, the equation of Haechnel and Daly (2004) adapted by Stolle et al (2018) with a correction factor equal to 0.52 was used (Equation ( 5)). This considers flow velocity v flow ( m s Þ, debris average diameter D deb m ð Þ, and specific weight of gravel blocks c deb kN m 3 equal to 25.97 (Wang et al 2018).…”

Section: Embankment Sliding Conceptual Modelmentioning

confidence: 99%

Development of fragility curves for road embankments exposed to perpendicular debris flows

Nieto

Chamorro

Echaveguren

et al. 2021

Geomatics, Natural Hazards and Risk

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Debris flows cause recurrent interruptions and permanent damages in rural road networks, representing significant economic losses. Embankments are road assets frequently exposed to debris flows, especially in mountainous areas. The potential risk of infrastructure exposed to debris flows can be assessed in terms of the probability of expected damage based on fragility curves. The aim of the study is to develop fragility curves for road embankments exposed to debris flows representative to the expected physical damage and capacity loss. Two conceptual models are proposed to describe the impact and erosion of debris flows that run perpendicularly to road embankments. Probabilistic models are then developed in terms of limit state functions and the simulation of potential scenarios. The resulting models are finally fit to log-normal distributions and compared to historical data. Headcut erosion has higher probabilities of occurrence compared to sliding failure caused by the impact of debris flow. Lower road embankments present higher probabilities of failure to the impact of debris flows, especially for dense flows. Whereas, longer interaction times of less dense flows increase the probability of headcut erosion. Two-lane roads may present 50% more probabilities of headcut erosion compared to multilane roads for similar debris flows intensity.

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Debris impact under extreme hydrodynamic conditions part 2: Impact force responses for non-rigid debris collisions

Cited by 30 publications

References 29 publications

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Full-scale CFD simulation of tsunamis. Part 1: Model validation and run-up

Development of a Probabilistic Framework for Debris Transport and Hazard Assessment in Tsunami-Like Flow Conditions

Development of fragility curves for road embankments exposed to perpendicular debris flows

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