• Title/Summary/Keyword: Earthquake disaster prevention

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Three-dimensional Modeling Seismic Analysis of Circular Water Reservoirs considering Differential Settlement Effects (부동침하 영향을 고려한 원형 배수지 구조의 3차원 모델링 지진 해석)

  • Lee, Sang-Youl;Choi, Hyung Bae;Ahn, Kwang Sik;Jeong, Gyo-Cheol
    • The Journal of Engineering Geology
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    • v.31 no.1
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    • pp.43-53
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    • 2021
  • Three-dimensional finite element analysis of 1,300 ton stainless water reservoirs was undertaken to consider differential settlement effects of the reservoir when subjected to earthquake loads. The earthquake load for large (>1,000 ton) water reservoirs are further determined using a specification established from the Korean Standards Association. The structural behavior of water reservoirs with differential settlements can be heavily dependent on seismic loading effects. Stress and displacement distributions are induced for various load combinations, including for with and without differential settlements. From numerical examples, the induced maximum displacements of the water reservoirs largely increase with differential settlements compared to those without differential settlements.

The Impact of the Government's Earthquake Disaster Response Capabilities and the Legal and Institutional Appropriateness of the Disaster Management System on the Operational Performance of Disaster Management : Focused on Fire Officer's Consciousness (정부의 지진재난 대응역량과 재난관리체계의 법·제도적 적절성이 재난관리 운영성과에 미치는 영향 : 소방공무원의 인식을 중심으로)

  • Youn, SeokMin
    • Journal of the Society of Disaster Information
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    • v.16 no.2
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    • pp.318-330
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    • 2020
  • Purpose: In this study, the effect of the government's disaster response capabilities and the legal and institutional appropriateness of the disaster management system on the operational performance of disaster management performance were verified. Method: Questionnaire survey was performed for the fire officials, and the surveyed data was statistically analyzed by using SPSS 25.0 program. Result: The main results of this study are as follows. First, the government's earthquake disaster response capability is found to have a significant effect on disaster follow-up management as well as disaster prevention preparation, which is a factor in disaster management performance. Second, it has been shown that the legal and institutional appropriateness of the earthquake disaster management system has a significant impact on disaster follow-up management as well as disaster prevention preparation, which is a factor of disaster management performance. Conclusion: The important policy implications for improving the operation performance of disaster management could be obtained in preparation for earthquakes in Korea.

The research of u-disaster prevention City service and technology (u-방재 City 서비스 및 기술에 관한 연구)

  • Lee, Bum-Gyo;Kim, Hyun-Joo;Han, Jin-Woo
    • 한국정보통신설비학회:학술대회논문집
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    • 2008.08a
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    • pp.277-280
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    • 2008
  • Starting from 2005, as the new city paradigm, the term 'u-City' was created in Korea. U-City service, as defined in "u-City law", is a service that connects and intermediates among government, traffic, welfare, environment, disaster mitigation, etc., and their data based on ubiquitous city technology and infrastructure. According to the survey executed by local governments, the improvements in the standard of living of citizens have in turn increased the needs for anti-mitigation services. Such trend is bolstered with the recent disasters such as the conflagration of Korean Soong-rae Gate and the devastating earthquake of Sichuan province. This article describes a concept of the u-City disaster prevention service and looks into the activities and planning of u-City disaster prevention service of local governments. This paper also briefly looks into the law and policies to derive the needs of u-City disaster prevention service as well as the current technologies and u-City disaster prevention services of local governments. Ultimately, this paper offers the strategic direction of developing u-Disaster Prevention City.

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Detailed Finite Element Analysis of Full-scale Four-story Steel Frame Structure subjected to Consecutive Ground Motions

  • Tagawa, Hiroyuki;Miyamura, Tomoshi;Yamashita, Takuzo;Kohiyama, Masayuki;Ohsaki, Makoto
    • International Journal of High-Rise Buildings
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    • v.4 no.1
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    • pp.65-73
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    • 2015
  • Detailed finite element (FE) analyses of a full-scale four-story steel frame structure, subjected to consecutive 60% and 100% excitations from the JR Takatori records during the 1995 Hyogoken-Nanbu earthquake, are conducted using E-Simulator. The four-story frame was tested at the largest shake-table facility in the world, E-Defense, in 2007. E-Simulator is a parallel FE analysis software package developed to accurately simulate structural behavior up to collapse by using a fine mesh of solid elements. To reduce computational time in consecutive dynamic time history analyses, static analysis with gravity force is introduced to terminate the vibration of the structure during the analysis of 60% excitation. An overall sway mechanism when subjected to 60% excitation and a story mechanism resulting from local buckling of the first-story columns when subjected to 100% excitation are simulated by using E-Simulator. The story drift response to the consecutive 60% and 100% excitations is slightly smaller than that for the single 100% excitation.

A Comparative Analysis of Korea-Japan Seismic Recovery System (한일 지진 복구체계의 비교 분석)

  • Lee, JunBeom
    • Journal of the Society of Disaster Information
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    • v.16 no.3
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    • pp.458-471
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    • 2020
  • Purpose: In Korea, the frequency and frequency of earthquakes are increasing every year. Therefore, the purpose of this study was to compare and analyze the characteristics and examples of earthquakes in Korea and Japan, and to propose improvements to the earthquake prevention policy in Korea. Method: In this study, we investigate and evaluate Japan's response in two cases: the Kobe earthquake and the East Japan earthquake. After surveying and evaluating the nation's countermeasures in the two events, Gyeongju and Pohang, they were compared. Result: When comparing recovery systems in Korea and Japan, there were significant differences in plans for restoration of road transport networks, regional disaster prevention plans, and the introduction of Conclusion: considering the physical distance between Korea's earthquake-prone areas and the capital, the government should quickly come up with countermeasures to ensure that immediate earthquake response in the region is enhanced through the detailed establishment of the Functional Continuity Plan (COOP), and that administrative functions will function normally in the event of a disaster through the introduction of the administrative BCP concept.

Study on Earthquake Hazard Response Process by 'Pohang Earthquake' Case Analysis (포항지진사례 분석을 통한 지진재난 대응 프로세스에 관한 연구)

  • Kang, Hyeong Gu;Park, Ki-Jong;Kim, HyeWon
    • The Journal of the Korea Contents Association
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    • v.21 no.1
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    • pp.561-571
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    • 2021
  • The 2017 Pohang earthquake left us with issues related to long-term repair and restoration from massive earthquake damage. The existing Earthquake response manual was insufficient to consider the flow of earthquake disaster work and the characteristics of long-lasting earthquake disaster. Accordingly, It is important to analyze and record how to earthquake response work was carried out during the Pohang earthquake. The functions that require the most work and manpower in the event of an earthquake disaster were emergency life stabilization support, facility emergency recovery, and energy functional restoration. As a result of analyzing the difficulties and problems of disaster response by function, it was found that the prevention and preparation for damage in advance was insufficient for each function. In conclusion, we subdivided the response step applied with the concept of time and presented the overall work flow process for thirteen collaboration functions. It is expected that this result will help disaster managers to work effectively in the event of a large scale earthquake.

A Basic Study for Securing the Business Continuity of Local Governments in the Event of Earthquake and Tsunami (지진 및 지진해일 발생 시 지방자치단체의 업무연속성 확보를 위한 기초 연구)

  • Shin, Hojoon;Koo, Wonhoi;Baek, Minho
    • Journal of the Society of Disaster Information
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    • v.11 no.2
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    • pp.227-234
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    • 2015
  • In this study, the theoretical review was carried out on the concepts regarding the continuity of operation plan and business continuity management plan, international standard ISO22301 and common required functions for disaster response, and the business continuity guideline of local governments in Japan and establishment cases were analyzed to draw matters to be reflected for establishing the business continuity plan of local governments according to the occurrence of earthquake and tsunami. In conclusion, the standard guideline of central government should be prepared for establishing the business continuity plan of local governments and the foundation to establish the plan smoothly based on such guideline should be provided. Also, the business continuity plan should be prepared based on the previous established safety management plans by reflecting the regional characteristics of local governments. And, in order to establish the business continuity plan that fits the region, proper investigations can be carried out to examine the characteristics of each organizations, resources, facilities and environments. Lastly, detailed scenario on the scale of earthquake and tsunami occurrence and damages is prepared to establish the business continuity plan of local governments and conditions for prompt countermeasures according to the scale.

NUMERICAL SIMULATION OF 1993 TSUNAMI FLOODING ONTO AONAE DISTRICT, OKUSHIRI ISLAND

  • Yamashita, Takao
    • Proceedings of the Korean Society of Coastal and Ocean Engineers Conference
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    • 1996.10a
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    • pp.3-6
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    • 1996
  • On July 12, 1993, a large earthquake (M=7.8) occurred off the south-west of Hokkaido, Japan. The tsunami generated by this earthquake caused a disaster which took a heavy toll of lives, more than 200 persons dead, by the flooding of tsunami in the area of Aonae district in Okushiri island. Investigation after the disaster made clear that southern lowland was flooded by the tsunami coming from west about 5 min after the shock and the second tsunami from the east attacked eastern lowland of the Aonae District about 10 min after the shock. (omitted)

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