Probabilistic Investigation and Risk Assessment of Debris Transport in Extreme Hydrodynamic Conditions

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

doi:10.1061/(asce)ww.1943-5460.0000428

Cited by 34 publications

(26 citation statements)

References 52 publications

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“…Stolle et al (2018b), in a hydrodynamic analysis of the same flume, determined that the approximate Darcy-Weisbach friction factor was 0.0293 by fitting the instantaneous wave profile of various impoundment depths to the Chanson (2006) solution for a dam-break wave. The coefficient of static friction ( 0 ) between the debris model and the false floor was approximately 0.40 (Stolle et al 2018c), which slightly exceeds the suggested coefficient (0.30) used in the design of shipping container transportation methods (GDV 2003).…”

Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 76%

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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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Section: Methodology 21 Experimental Facilitiesmentioning

confidence: 76%

“…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.

Self Cite

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“…The authors chose to install the debris at a distance of 1 m (model scale) from the building. Although this distance was shown by Stolle et al (2018c) to be enough to guarantee full acceleration of the shipping containers, this might have affected their trajectory (Nistor et al 2016), thus influencing the formation of the debris dam and hydrodynamic forces exerted on the building.…”

Section: Discussionmentioning

confidence: 99%

“…The debris was inserted in the middle of the channel at a distance of 1 m upstream from the building, over a width of 0.30 to 0.40 m (Figure 1). Stolle et al (2018c) showed that a distance of 0.75 m was sufficient to guarantee full acceleration of containers with comparable size and similar flow conditions. Naito et al (2013) and θ = ±11.7° for 10 containers (minimum value allocated during Test 1).…”

Section: Experimental Set-upmentioning

confidence: 99%

“…Nistor et al (2016) experimentally investigated the trajectory of shipping containers over a horizontal channel, showing that the spreading angle was a function of the number of containers. Stolle et al (2018c) observed that hydraulic conditions had a significant influence on the debris trajectory, with larger impoundment depths generating lesser lateral spreading. Goseberg et al (2016a) focused on the debris motion through fixed obstacles under unsteady flow conditions.…”

Section: Introductionmentioning

confidence: 98%

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Effect of Debris Damming on Wave-Induced Hydrodynamic Loads against Free-Standing Buildings with Openings

Wüthrich¹,

Arbós

Pfister

2020

J. Waterway, Port, Coastal, Ocean Eng.

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Tsunamis, impulse waves and dam-break waves are rare but catastrophic events, associated with casualties and damages to infrastructures. An adequate description of these waves is vital to assure human safety and generate resilient structures. Furthermore, a specific building geometry with openings, such as windows and doors, reduces wave-induced loads and increases the probability that a building withstands. However, waves often carry a large volume of debris, generating supplementary impact forces and creating "debris-dams" around buildings, thus limiting the beneficial effects of the openings. Herein, a preliminary study on the 3D effect of debris-dams on the post-peak wave-induced loads under unsteady flow conditions is presented based on laboratory experiments. Both wooden logs (forest) and shipping containers were tested, showing a different behavior. Shipping containers were associated with severe impact force peaks, whereas the interlocking nature of forest-type debris provoked a compact "debris dam" leading to higher and longer-lasting hydrodynamic forces. The arrangement of the debris This material may be downloaded for personal use only. Any other use requires prior permission of the American Society of Civil Engineers. also had an influence on the resulting structural loading. All tested scenarios were analyzed in terms of horizontal forces, cantilever arm and impulse acting on the building. This study presents a methodology to support the evaluation of post-peak debris-induced loads for the design of safer resilient buildings.

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Experimental study of debris transport driven by a tsunami-like wave: Application for non-uniform density groups and obstacles

Park

Koh

Cox

et al. 2021

Coastal Engineering

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Probabilistic Investigation and Risk Assessment of Debris Transport in Extreme Hydrodynamic Conditions

Cited by 34 publications

References 52 publications

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

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

Effect of Debris Damming on Wave-Induced Hydrodynamic Loads against Free-Standing Buildings with Openings

Experimental study of debris transport driven by a tsunami-like wave: Application for non-uniform density groups and obstacles

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