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- W2019012717 abstract "2011년 7월과 8월 사이에 발생한 총 8개 토석류 재해 지역에 대한 재해이력 사례를 분석하여 각 재해지역의 토석류 물리적 특성을 파악하였다. 또한 각 재해지역에서 피해를 입은 15개 건물에 대한 손상 특성 분석을 수행하였다. 토석류의 물리적 특성과 건물 손상정도를 바탕으로 토석류의 높이, 속도 및 충격압력으로 구성된 취약함수를 구하였다. 또한 보강 콘크리트 구조와 비 콘크리트 구조와 같은 건물의 구조 형식에 따른 취약함수를 각각 산출하였다. 비 콘크리트 건물의 경우 토석류 충격압이 30 kpa 이상일 때 완전 파괴, 15~30 kPa일 때 심각한 손상, 0~15 kPa일 때 경미한 손상이 발생하는 것으로 분석되었다. 이에 비해 보강 콘크리트 건물의 경우 100 kPa 이상에서 심각한 손상, 35~100 kpa일 때 보통 손상, 0~35 kPa일 때 경미한 손상을 입는 것으로 파악되었다. 콘크리트 건물의 경미한 손상에 대응하는 토석류 충격압은 비 콘크리트 건물에서는 완전 파괴에 해당되는 손상을 가져다 줄 수 있음을 의미한다. 건물 구조형식과 토석류 물리적 특성에 따른 취약곡선을 비선형 회귀분석을 수행하여 함수형태로 나타내었다. 이러한 토석류 취약함수는 토석류 재해로 피해가 발생할 가능성이 있는 지역의 건물손상 정도를 정량적으로 평가하는 방법으로 이용할 수 있다. The physical characteristics of debris flows were analyzed from a total of 8 cases of debris flow disasters occurred in between July and August, 2011. 15 buildings damaged in these events were also investigated in detail to study the characteristics and patterns of building damages by debris flows. Physical vulnerability was obtained from the relationship of the degree of building damage and the physical characteristics of debris flow. Three different empirical vulnerability curves were obtained, which were functions of debris flow height, flow velocity and impact pressure, respectively. Furthermore, the vulnerability function was characterized according to the structural types of the building. In the case of non-concrete building, a complete destruction occurred at the impact pressure of more than 30 kPa, an extensive damage at the impact pressure between 15 and 30 kPa, a slight damage at the impact pressure below 15 kPa. In the case of reinforced-concrete buildings, an extensive damage occurred at the impact pressure of more than 100 kPa, a moderate damage at the impact pressure between 35 and 100 kPa, a slight damage at the impact pressure below 35 kPa. The impact pressure of debris flow corresponding to a slight damage to the reinforced-concrete building produced a complete damage for the case of non-concrete building, Nonlinear regression analysis was performed according to the physical characteristics of debris flow and the building structural type. The proposed physical vulnerability curves could be used as a quantitative assessment of the structural resistance of buildings affected by a debris flow event." @default.
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- W2019012717 date "2014-10-31" @default.
- W2019012717 modified "2023-10-14" @default.
- W2019012717 title "Physical Vulnerability Function of Buildings Impacted by Debris Flow" @default.
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- W2019012717 doi "https://doi.org/10.9798/kosham.2014.14.5.133" @default.
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