• Title/Summary/Keyword: Urban fire

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The Development of Forest Fire Statistical Management System using Web GIS Technology

  • Jo, Myung-Hee;Kim, Joon-Bum;Kim, Hyun-Sik;Jo, Yun-Won
    • Proceedings of the KSRS Conference
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    • 2002.10a
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    • pp.183-190
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    • 2002
  • In this paper forest fire statistical information management system is constructed on web environment using web based GIS(Geographic Information System) technology. Though this system, general users can easily access forest fire statistical information and obtain them in visual method such as maps, graphs, and text if they have web browsers. Moreover, officials related to forest fire can easily control and manage all information in domestic by accessing input interface, retrieval interface, and out interface. In order to implement this system, IIS 5.0 of Microsoft is used as web server and Oracle 8i and ASP(Active Server Page) are used for database construction and dynamic web page operation, respectively. Also, Arc IMS of ESRI is used to serve map data using Java and HTML as system development language. Through this system, general users can obtain the whole information related to forest fire visually in real time also recognize forest fire prevention. In addition, Forest officials can manage the domestic forest resource and control forest fire dangerous area efficiently and scientifically by analyzing and retrieving huge forest data through this system. So, they can save their manpower, time and cost to collect and manage data.

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A Study on the Improvement of Structure of Urban Transit Vehicle Considering Elevation of Fire Safety (화재안전성 향상을 고려한 도시철도 차량의 구조개선에 관한 연구)

  • Kim Kyu-Joong;Lee Seung-Yong;Lee Kuen-Oh
    • Proceedings of the KSR Conference
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    • 2005.11a
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    • pp.15-20
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    • 2005
  • This is a comparative study where we compare simulation results with model examining the time and direction the fire spreads when it breaks out. Also there is vertical distribution of temperature in carriage where the fire spreads out. This study is about demonstrating how to establish smokeless system in urban vehicle, about its necessity, and about vehicle system restructuring, This study also makes an effort to find more advanced method for efficient fire safety in trains, In existing vehicles, in case of fire, the smoke can't go out when doors are closed and hence it spreads in whole train. Even though the method of using ventilation or exhaust established inside the carriage to throw smoke out is much better than the way of opening end doors in each carriage, this study is trying to do research on second way. Through simulation we see that in second case, even though not as good as the first one, smoke can exit through gates. Even though the first method is better, the second can also be uses to let fire out. We can know that in the first case as the smoke can exit out faster, it provides more safety for people. So this system provides better fire safety condition.

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Fire Behavior of Reinforced Concrete Filled Square Steel Tube Columns Under Constant Axial Loads

  • Jeeyoung Lee;Seulgi Han;Jinwon Shin;Inrak Choi;Sungmo Choi
    • International Journal of High-Rise Buildings
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    • v.13 no.1
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    • pp.85-95
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    • 2024
  • A composite member made of concrete-filled steel tubes (CFT columns) has been recognized for its fire resistance due to the thermal mass effect of concrete inside the steel tube, as shown in various studies. In this study, the fire resistance performance of reinforced CFT columns under constant axial load was evaluated using finite element analysis with ABAQUS. For this purpose, the variables including cross-section size, steel tube thickness, and concrete cover thickness were set, and the temperature distribution in the column cross-section exposed to a standard fire was investigated using heat transfer analysis. Ultimately, a P-M interaction curve was obtained by evaluating the overall residual strength of columns, and the fire resistance time was determined by evaluating axial displacement-time responses due to the reduction in load capacity during fire through stress analysis.

Development of Fire Evacuation Guidance System using Characteristics of High Frequency and a Smart Phone (고주파 특성과 스마트폰을 활용한 화재 대피 안내시스템 개발)

  • Jeon, Yu-Jin;Jun, Yeon-Soo;Yeom, Chunho
    • Journal of the Korea Institute of Information and Communication Engineering
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    • v.24 no.10
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    • pp.1376-1383
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    • 2020
  • Although studies on fire evacuation systems are increasing, studies on the evacuation of evacuees in indoor spaces are insufficient. According to the latest research, it has been suggested that the use of high frequency might be effective for identifying the location of evacuees indoors. Accordingly, in this paper, the authors intend to develop evacuation location recognition technology and fire evacuation guidance system using high-frequency and a smartphone. The entire system was developed, including an app server, evacuees location recognition unit, an evacuation route search, an output unit, and a speaker unit based on Wi-Fi communication. The experimental results proved the possibility of the effectiveness of the system in the fire situation data. It is expected that this study could be used as an essential study of a fire evacuation guidance system using high frequency data in case of fire.

Examined of reinforcement for the fire protection of the outside insulation Urbantype Housing with flammable insulation material (가연성 단열재를 사용한 외단열 도시형 생활주택의 방화를 위한 보강재 검토)

  • Lee, Kwang-Hee;Jung, Ui-In;Kim, Bong-Joo
    • Proceedings of the Korean Institute of Building Construction Conference
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    • 2015.11a
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    • pp.28-29
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    • 2015
  • Due to the big fire in Uijeongbu, the status of construction, fireproof materials and structural method were examined to prevent fire propagation through outside insulation parts of urban living homes. Through research and experiments, the following results were obtained. It was confirmed that outside heat-insulation wall method was used in a large number of urban living homes which were made of materials and structures spreading fire easily.Through experiments, it was revealed that lightweight plate material, as a fireproof material, can save the cost as well as the period of construction and obtain more than 30 minutes of evacuation time which is twice the maximum evacuation time.

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Research on a Fire Detection and a Guide System in Building on the base of Sensor Network (도시건물의 센서네트워크환경의 방재 및 피난대피 유도시스템에 관한 연구)

  • Kwon, Chang-Hee
    • 한국디지털정책학회:학술대회논문집
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    • 2007.06a
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    • pp.333-339
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    • 2007
  • To preventand minimize damages from disaters, it is necessary to build a fire detection or a guide system that can gather and organize proper information and that can analyze about disasters. This research aims at suggestion of fire detection and guide system in building on the base of sensor network. To do so, it examines the effects of this suggesting model system based urban disaster management system.

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Agent-Based Load Balancing Method for Web GIS Services; Web-Based Forest Fire Management System

  • Jo, Yun-Won;Jo, Myung-Hee;Oh, Jeong-Soo
    • Korean Journal of Remote Sensing
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    • v.17 no.4
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    • pp.359-368
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    • 2001
  • The prototype of forest fire management system on Web was studied. In the architecture of this system, one of the most important concerns is to handle load upcoming to Web Server so that it provides Web service without any delay or failure. In order to solve this problem, the agent is designed on dispatcher in a Web server cluster and implemented to distribute load dynamically by considering the information related to load coming to the Web Server such as the number of connection to the Map Server. The proposed forest fire management system has user-friendly interface with the GIS mapping functionality by selecting Map Objects Internet Map Server (MO IMS) as Map Server and is implemented using Java as programming language.

The study of the efficiency augmentation model under Urban system - a point Taegu subway fire accident probelm and countermeasure - (대구지하철 화재사고를 통한 도시철도의 효율성 증대 모형에 관한 연구)

  • Jung Ye-Seoung
    • Proceedings of the KSR Conference
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    • 2003.05a
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    • pp.239-250
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    • 2003
  • It explained the cause and a process of Taegu subway fire accident in this report. Will reach and to lead it analyzed the structure and actual proof problem which it follows in Urban construction and the operation of Korea. The Urban is operated efficiently to be respected, it demands a security division order to become fixed the culture which it uses, it intercepts the misfortune due to the human being the setup for with the destroyer it is possible. This report will become the place help which reappraises all systems against the construction and the operation of the Urban system.

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An Experimental Study on Characteristics of Sprinkler Head Activation in Low Growth Rate Fire (저성장속도 화재에서의 스프링클러 헤드 동작특성에 관한 실험적 연구)

  • Choi, Yong-Seob;Yoon, Jong-Chil
    • Fire Science and Engineering
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    • v.30 no.5
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    • pp.26-35
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    • 2016
  • Sprinkler installations shall be operated at normal operating temperature of the atmosphere as a fire sprinkler head in any facility to control and extinguish the fire when the fire initially. Recently, however, some flush type quick response automatic sprinkler heads in slow fire place is a problem that can not be normal operation are raised. In this paper, by using the experimental model of the Apartment house of Commons and Cabinet burner size bedrooms fire conditions to form a slow growth rate and can supply more than 0.2 MPa pressure is the minimum pressure that can be applied inside the pipe in the field experiment was conducted. In the majority of experiments lush type quick response automatic sprinkler heads which is used in the country it was confirmed to be incompletely opened as the Cold Soldering occur. This phenomenon is likely to fail early fire suppression and control because they can cause the spread of fire and casualties needed to complement domestic product testing and type approval standards through additional research.

Disasters Risk Assessment of Urban Areas by Geospatial Information Systems (지형공간정보체계에 의한 도시지역 재해위험도 평가)

  • Yoo, Hwan-Hee;Kim, Seong-Sam;Park, Ki-Youn;Choi, Woo-Suk
    • Journal of Korean Society for Geospatial Information Science
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    • v.13 no.3 s.33
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    • pp.41-52
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    • 2005
  • The high density of population and building; can cause catastrophe in urban areas when natural or artificial disasters break out. The aim of this paper is to assess comprehensive disasters risk of urban areas by Geospatial Information System. For this purpose, we classified disasters risk of urban areas into low categories: flood, fire, building-collapse, and shelter, and then determined factors for hazard risk assessment respectively. The results of hazard assessment can be applied to minimize the demage of disasters in establishing the urban management planning. For more systematic and professional approach the further research is need to consider more disaster assessment factors and join with related experts.

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