• Journal of the Computational Structural Engineering Institute of Korea
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• v.28 no.6
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• pp.625-633
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• 2015

In this study, a coupled probabilistic framework is developed to assess wind risk on apartment buildings by using the convolution of wind hazard and fragility functions. In this framework, typhoon induced extreme wind is estimated by applying the developed Monte Carlo simulation model to the climatological data of typhoons affecting Korean peninsular from 1951 to 2013. The Monte Carlo simulation technique is also used to assess wind fragility function for 4 different damage states by comparing the probability distributions of the window system's resistance performance and wind load. Wind hazard and fragility functions are modeled by the Weibull and lognormal probability distributions based on simulated wind speeds and failure probabilities. The modeled functions are convoluted to obtain the wind risk for the different damage levels. The developed probabilistic framework clearly shows that wind risk are influenced by various important characteristics of terrain and apartment building such as location of building, exposure category, topographic condition, roof angle, height of building, etc. The risk model presented in this paper can be used as tools to predict economic loss estimation and to establish wind risk mitigation plan for the existing building inventory.

• Journal of the Korean Society of Hazard Mitigation
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• v.11 no.3
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• pp.1-8
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• 2011

In this study, a wind hazard map over Korea peninsula based on geographical information is developed, which consists of the surface roughness model, the topographical effect model and the homogeneous wind model. The surface roughness model is assessed to evaluate the effect of the surface roughness on the wind field near ground. The topographical effect model is assessed to quantify the effect of the speed-up caused by topology, which is calculated by adopting the topographical effect factor in Korea building code (2005). The homogeneous wind map is created either by a frequency analysis method for meteorological data or a typhoon simulation. The results show that the wind hazard map can be applied to the determination of insurance premium as well as the assessment of loss and damage.

• KAPE Magazine
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• s.203
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• pp.41-41
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• 2013

• Proceedings of the Computational Structural Engineering Institute Conference
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• 2011.04a
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• pp.14-17
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• 2011

본 논문에서는 강풍대이면서 중/약진대에 위치하는 초고층건물에 내습할 수 있는 잠재적 지진에 대하여 다양한 지반조건에 따른 응답스펙트럼해석과 내진성능평가를 수행하였다. 국내와 같이 강풍대에 위치하면서 중약진대에 속하는 지진환경하에서 세장비 5.2이상의 초고층 철골대각가새골조는 10%/50년 재현주기 지진동에 대해서는 탄성저항가능성을 나타내었고 세장비 6.9이상의 초고층 철골대각가새골조는 2%/50년 재현주기 지진동에 대해서도 탄성적으로 저항할 수 있음을 보여주었다.

• 한국방재학회:학술대회논문집
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• 2009.02b
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• pp.139.2-139.2
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• 2009

• Journal of Korean Society of Disaster and Security
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• v.16 no.2
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• pp.49-56
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• 2023

Impact based forecast refers to providing information on potential socioeconomic risks according to weather conditions, away from the existing weather factor-oriented forecast. Developed weather countries are investing manpower and finances in technology development to provide and spread impact information, but awareness of impact based forecasts has not spread in Korea. In addition, the focus is on disasters such as floods and typhoons, which cause a lot of damage to impact based forecasts, and research on evaluating the impact of vehicle risks due to strong winds in the transportation sector with relatively low damage is insufficient. In Korea, there are not many cases of damage to vehicle conduction caused by strong winds, but there are cases of damage and the need for research is increasing. Road vulnerability is required to evaluate the risk of vehicles caused by strong winds, and the purpose of this study was to calculate the criteria for road vulnerability. The road vulnerability evaluation was evaluated by the altitude of the road, the number of lanes, the type of road. As a result of the analysis, it was found that the vulnerable area was well reproduced. It is judged that the results of this study can be used as a criterion for preparing an objective evaluation of potential risks for vehicle drivers.

• 방재와보험
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• s.109
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• pp.2-5
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• 2005

한국화재보험협회는 지난 6월 29일 "2005 풍수재해대책 세미나"를 개최하여 강풍에 대한 위험평가, 호우정책 및 기술개발, 풍수해 보험법 및 제도, 사업장에서의 풍수재해 위험 드에 대하여 문제점을 제시하고 대책을 찾아보는 자리를 마련, 지난 호에 관련기사를 게재한 바 있다. 지난 호에 이어 이번 호에서는 발표 내용을 요약해서 소개하도록 한다.

• Journal of the Korean Society of Hazard Mitigation
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• v.9 no.4
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• pp.21-28
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• 2009

Most of domestic shipyards are located at coastal regions which are affected by typhoons nearly every year. For effectiveness of shipbuilding, shipyards contain many facilities which are light-weighted and affected dominantly by wind. In the present paper, we analyze various wind fields over a shipyard including surrounding topology and structures to evaluate the structural safety of the facilities posed in the strong wind. Extreme wind speed for a study region was estimated by typhoon Monte Carlo simulation and then used for inlet wind speed for CFD analysis for wind load on the facilities. Considering geometrical wind effects, we assess the surface pressure of the elements as the pressure factor, the ratio of surface pressure to dynamic pressure. The results show that the simulated wind speed is greater than the design wind speed for the some facilities because of the shipyard's geometry. It also shows that surrounding topography in coastal area is needed to be considered and adjustment for design wind speed at wind load standard application is necessary for mooring ship and industry facilities.

• Journal of the wind engineering institute of Korea
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• v.22 no.4
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• pp.155-161
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• 2018

In modern society, damage caused by strong winds such as typhoons is expected to increase due to urbanization and global warming. In order to test the reinforcement performance of the newly developed window protection device, two-point force test and uniformly distributed load test were carried out on non-reinforced plate glass. It reinforcement performance of the window protection device was evaluated based on the flexural performance improvement. The analytical performance of the window protection device was evaluated by analysis using differential equations of elastic loading method and deflection curve and Midas-Gen. First, the analytical window protection device was evaluated by formulae derived using differential equations of elastic loading and deflection curve. The validity of the derived formulae investigated by comparing the maximum deflection of the central part of the plate with the experimental value and the theoretical value at maximum load. Then the results were compared with those by finite element FE method using Midas-Gen. Under the experimental conditions, with the window protection device, stress reduction effect up to 40% and deflection reduction up to 71.4% under the same load were obtained. It was also found that it is advantageous to perform the FE analysis using the plate element when the performance is evaluated because the error of FE analysis result using plate elements is far less than that using beam elements.

• 한국방재학회:학술대회논문집
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• 2011.02a
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• pp.93-93
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• 2011

연육 연도교에 주로 건설되는 초장대교량은 시설물 특성상 이용객들의 대피공간이 제약받고 태풍, 해일 등 자연재해에 노출이 많기 때문에 다른 공공시설물보다 재난에 취약한 구조물이다. 최근 공공시설물의 건설동향이 구조물의 장대화로 되어감에 따라 재난 발생시 예상 위험이 점점 더 커져가고 있다. 본 연구는 이전 연구를 통해서 구축된 재난관리 시나리오를 토대로 재난관리 알고리즘을 개발하였다. 초장대교량의 재난은 자연재해와 인적재해로 구분할 수 있다. 여러 가지 재해 중 본 연구에서 제시한 재난관리 알고리즘은 자연재해의 경우 안개, 강설, 결빙, 강풍, 지진, 해일 및 풍수해이며 인적재해의 경우 화재, 교통사고, 구조물파괴 및 테러이다. 이 재난관리 알고리즘은 재난관리 전산 프로그램 구축의 기초로 사용될 것이다. 본 연구는 국내외 재난관리 관련 사례조사를 토대로 재난 수준별 평가방법을 수립하였다. 안개, 강설, 결빙, 강풍, 지진, 해일 및 풍수해와 같은 자연재난은 심각한 재난 발생전에 교통통제가 가능한 형태로 분류될 수 있으며 사례조사를 통해 교통통제 관리기준을 설정하였다. 화재, 교통사고, 구조물 파괴 및 테러와 같은 인적재난은 상황 발생시부터 비상대응을 취해야할 재난의 형태로 분류될 수 있으며 사고발생 시나리오를 통해 대응 단계별 평가방법을 설정하였다. 또한 재난 수준별 평가방법을 토대로 재난관리 알고리즘을 개발하였다. 자연재해와 같이 사고 발생 전에 교통통제가 가능한 재해는 교통통제 모듈로 구분하여 재난관리 알고리즘을 설정하였다. 인적재해와 같이 사고 발생 즉시 비상대응을 실시해야할 재해는 비상대응 모듈로 구분하여 재난관리 알고리즘을 설정하였다. 교통통제 모듈과 비상대응 모듈은 원칙적으로 국가재난관리등급에 따라 관심, 주의, 경계, 심각의 4단계로 구분하였다. 교통통제 모듈과 비상대응 모듈은 AAD에 의해 관리자, 외부기관 및 이용자 각각의 세부 행동지침 및 요령을 제시하였다.