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

Content Provider	Springer Nature Link
Author	Kang, Hyo sub Kim, Yun tae
Copyright Year	2015
Abstract	Vulnerability assessment of elements at risk is a key component for risk assessment. The representative element at risk for debris flow is a residential building in downstream mountain, and the physical vulnerability of such a building depends on the structural characteristics of a building. The main objective of this paper was to construct physical vulnerability curves for different types of building structures in Korea to enable a quantitative assessment of debris flow risks. The physical characteristics of debris flows were analyzed based on 11 debris flow events that occurred in July and August, 2011. A total of 25 buildings that were damaged during these events were investigated in detail to determine the characteristics and patterns of damage. This study analyzes the relationship between the degree of building damage and the intensity of the debris flows through field survey data, spatial data, and empirical formula. Three different empirical vulnerability curves were obtained as functions of the debris flow depth, the flow velocity, and the impact pressure. Furthermore, the vulnerability function was characterized according to the structural type of the buildings. In the case of non-RC buildings, complete destruction occurred with an impact pressure greater than 30 kPa. For RC buildings, slight damage occurred with impact pressures less than 35 kPa. The impact pressure of debris flows corresponding to slight damage to RC buildings could result in complete destruction of non-RC buildings. The physical vulnerability curves suggested here have potential applications in quantitative assessment of the structural resistance of buildings to debris flow events.
Starting Page	1475
Ending Page	1493
Page Count	19
File Format	PDF
ISSN	0921030X
Journal	Natural Hazards
Volume Number	80
Issue Number	3
e-ISSN	15730840
Language	English
Publisher	Springer Netherlands
Publisher Date	2015-10-15
Publisher Place	Dordrecht
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Building damage Structural type Vulnerability function Impact pressure Debris flow Natural Hazards Hydrogeology Geophysics/Geodesy Geotechnical Engineering & Applied Earth Sciences Civil Engineering Environmental Management
Content Type	Text
Resource Type	Article
Subject	Atmospheric Science Water Science and Technology

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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