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Development of the Risk Index to Inspect the Specific Buildings against Flood

수재에 대한 특수건물 진단을 위한 위험도지수 개발

Lee, Youngkyu;Lee, Chuljoo;Ahn, Seungil
이영규;이철주;안승일

  • Received : 2013.09.16
  • Accepted : 2013.10.24
  • Published : 2013.12.31

Abstract

The flood risk index (FRI) is developed to inspect the safety against flooding for the specific buildings, approximately 34,000 buildings, distributed over South Korea. FRI, defined as percentage index of potential flood damage to the possible maximum damage, is evaluated by the risk triangle approach. The flood management map, that includes the flood zones of riverine inundation, storm surge and the flood footprints, is constructed in the study. The exposure and vulnerability for 723 specific buildings is investigated. The vulnerability is assessed by the mean damage ratio curve with respect to the floor water depth and the building property such as the defensive height against flood, first floor height, building structure, wall, interior cost ratio, position of electric transformer vault, and drainage pump. Comparing FRI with the risk zones for the wind and flood induced loss coverage doesn't show a explicit correlation. Researching FRI with respect to Sido, Korean province, shows that many of the specific buildings located in Seoul and Jeonbuk is distributed lower than the flood level. Considering FRI with the inundation depth doesn't show an intensive correlation. Comparing the building storey to FRI shows that the ranges of FRI is getting narrow as the storey increases.

Keywords

Specific Building;Flood;Flood Map;Risk Index

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