The physical vulnerability of different types of building structure to debris flow events

Kang, Hyun-Gyu; Kim, Yun-tae

doi:10.1007/s11069-015-2032-z

Cited by 113 publications

(68 citation statements)

References 25 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Jakob et al (2012) noted a good correlation between the intensity index and the degree of damage to buildings that have been impacted by debris flows, and defined four building damage classes ranging from "some sedimentation" to "complete destruction". Kang and Kim (2016) carried out a similar study of the vulnerability of both reinforced concrete and nonreinforced concrete buildings to a series of debris flows in South Korea in 2011, and proposed three different vulnerability curves based on estimated flow depths, flow velocities, and impact pressures. Similar approaches to developing vulnerability curves were presented by Quan Luna et al (2011) using data from a series of damaging debris flows in Italy in Eidsvig et al (2014) using data from a debris flow event in Italy in 1987.…”

Section: Estimating Vulnerability Of Elements At Riskmentioning

confidence: 99%

2014 Canadian Geotechnical Colloquium: Landslide runout analysis — current practice and challenges

McDougall

2017

Can. Geotech. J.

188

View full text Add to dashboard Cite

Flow-like landslides, such as debris flows and rock avalanches, travel at extremely rapid velocities and can impact large areas far from their source. When hazards like these are identified, runout analyses are often needed to delineate potential inundation areas, estimate risks, and design mitigation structures. A variety of tools and methods have been developed for these purposes, ranging from simple empirical-statistical correlations to advanced three-dimensional computer models. This paper provides an overview of the tools and methods that are currently available and discusses some of the main challenges that are currently being addressed by researchers, including the need for better guidance in the selection of model input parameter values, the challenge of translating model results into vulnerability estimates, the problem with too much initial spreading in the simulation of certain types of landslides, the challenge of accounting for sudden channel obstructions in the simulation of debris flows, and the sensitivity of models to topographic resolution and filtering methods.Key words: landslides, runout analysis, modelling, risk assessment.Résumé : Les coulées, comme les glissements de terrain tels que les coulées de débris et des avalanches de roches se déplacent à des vitesses extrêmement rapides et peuvent avoir un impact sur de grandes zones, loin de leur source. Lorsque ces risques sont identifiés, les analyses du battement sont souvent nécessaires pour délimiter les zones inondables, estimer les risques et concevoir des structures d'atténuation. Une variété d'outils et de méthodes ont été élaborés pour ces fins, allant de simples corrélations empiriques-statistiques avancées de modèles informatiques en trois dimensions. Cet article donne un aperçu des outils et des méthodes qui sont actuellement disponibles et examine certains des principaux défis qui sont actuellement traités par les chercheurs, y compris le besoin d'une meilleure orientation pour la sélection des valeurs des paramètres d'entrée du modèle, le défi de traduire les résultats des modèles en estimations de vulnérabilité, le problème de la trop grande dispersion initiale dans la simulation de certains types de glissements de terrain, le défi de comptabilité pour les obstacles soudains de canal dans la simulation des écoulements de débris, et la sensibilité des modèles à la résolution topographique et les méthodes de filtrage. [Traduit par la Rédaction]

show abstract

Section: Estimating Vulnerability Of Elements At Riskmentioning

confidence: 99%

2014 Canadian Geotechnical Colloquium: Landslide runout analysis — current practice and challenges

McDougall

2017

Can. Geotech. J.

188

View full text Add to dashboard Cite

show abstract

“…The resulting vulnerability curves proposed in this paper can be compared with other existing curves for debris flows. As mentioned earlier, the model based on structural loss is the main direction and the means of the current research, such as the ones proposed by Luna et al (2011), Totschnig et al (2011), Papathoma-k€ ohle et al (2012), Kang and Kim (2016), and Zhang et al (2018), as shown in Figure 9. However, there are limited studies based on damage probability of the structure, such as the one proposed by Eidsvig et al (2014), as shown in Figure 10.…”

Section: Comparison With Existing Curvesmentioning

confidence: 99%

Quantification of debris flow vulnerability of typical bridge substructure based on impact force simulation

Liang

Xiong

2019

Geomatics, Natural Hazards and Risk

View full text Add to dashboard Cite

Vulnerability analysis of engineering structures is an important aspect of risk assessment. It involves the probability that the structure meets or exceeds various set damage conditions under the influence of different risk levels. In order to quantitatively analyze the vulnerability of the typical bridge substructure under debris flow, four vulnerability curves with different damage levels under debris flow impact are obtained by numerical simulation of 150 damage conditions with the aid of three-dimensional finite element analysis software. The results show that the vulnerability curves of debris flow established in this paper are well fitted with data of numerical simulation. The acceleration is fastest in the middle of the curve, and high-intensity debris flow is more likely to cause high-level damage of bridge structure. By using the vulnerability curves established in this paper, the damage probability distribution under a certain debris flow intensity and damage control points of bridge substructure can be further obtained, which provides a basis for disaster prediction, risk management and reliability analysis of transportation system. The method and model presented can provide a reference for the vulnerability analysis of other types of structures under debris flow.

show abstract

“…Equation 1is used to estimate the impact pressure (p, kPa) in each grid [15]: where kin is the kinetic energy calculated by Flow-R internally and is the bulk density of debris flow (2,239.17 kg/m 3 was used in this study). If the impact pressure of landslide exceeds about 34 kPa, houses built with bricks or woods would be destroyed completely [6].…”

Section: Potential Landslide Areas Identificationmentioning

confidence: 99%

“…Although many studies have evaluated the damage of buildings due to a landslide [5][6][7], studies evaluating the damage of life or secondary damage are not sufficient to provide a guideline. In recent years, however, some studies on the socioeconomic vulnerability assessment considering the damage of life or secondary damage have been attempted [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Development and Application of Urban Landslide Vulnerability Assessment Methodology Reflecting Social and Economic Variables

Park

Pradhan

Kim

et al. 2016

Advances in Meteorology

Self Cite

View full text Add to dashboard Cite

An urban landslide vulnerability assessment methodology is proposed with major focus on considering urban social and economic aspects. The proposed methodology was developed based on the landslide susceptibility maps that Korean Forest Service utilizes to identify landslide source areas. Frist, debris flows are propagated to urban areas from such source areas by Flow-R (flow path assessment of gravitational hazards at a regional scale), and then urban vulnerability is assessed by two categories: physical and socioeconomic aspect. The physical vulnerability is related to buildings that can be impacted by a landslide event. This study considered two popular building structure types, reinforced-concrete frame and nonreinforced-concrete frame, to assess the physical vulnerability. The socioeconomic vulnerability is considered a function of the resistant levels of the vulnerable people, trigger factor of secondary damage, and preparedness level of the local government. An index-based model is developed to evaluate the life and indirect damage under landslide as well as the resilience ability against disasters. To illustrate the validity of the proposed methodology, physical and socioeconomic vulnerability levels are analyzed for Seoul, Korea, using the suggested approach. The general trend found in this study indicates that the higher population density areas under a weaker fiscal condition that are located at the downstream of mountainous areas are more vulnerable than the areas in opposite conditions.

show abstract

The physical vulnerability of different types of building structure to debris flow events

Cited by 113 publications

References 25 publications

2014 Canadian Geotechnical Colloquium: Landslide runout analysis — current practice and challenges

2014 Canadian Geotechnical Colloquium: Landslide runout analysis — current practice and challenges

Quantification of debris flow vulnerability of typical bridge substructure based on impact force simulation

Development and Application of Urban Landslide Vulnerability Assessment Methodology Reflecting Social and Economic Variables

Contact Info

Product

Resources

About