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REFERENCE LINKING PLATFORM OF KOREA S&T JOURNALS
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Journal of The Korean Society of Disaster Information
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The Korean Society of Disaster Information
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Volume & Issues
Volume 11, Issue 4 - Dec 2015
Volume 11, Issue 3 - Sep 2015
Volume 11, Issue 2 - Jun 2015
Volume 11, Issue 1 - Mar 2015
Selecting the target year
Behavior of girth-welded buried steel pipes under external pressure
Jeon, Juntai ; Lee, Chinhyung ; Chang, Kyongho ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 1~8
DOI : 10.15683/kosdi.2015.11.1.1
This paper presents finite element (FE) analyses to clarify the effects of external pressure on the residual stresses in a girth-welded steel pipe. At first, FE simulation of the girth welding process is carried out to obtain the weld-induced residual stresses employing sequentially coupled three-dimensional (3-D) thermo-mechanical FE formulation. Then, 3-D elastic-plastic FE analyses incorporating the residual stresses and plastic strains obtained from the preceding FE simulation are performed to investigate the residual stress behavior in the girth-welded pipe under external pressure. The FE analysis results show that the hoop compressive stresses induced by the external pressure significantly alter the hoop residual stresses in the course of the mechanical loading.
A Study on Present Situation of Violence in School and Improvement Program
Park, Youngman ; Jeong, Jeahwan ; Kim, Eunjung ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 9~22
DOI : 10.15683/kosdi.2015.11.1.9
School is the place where teenagers spend most of their time, forming friendships and receiving guidance from the teachers. Their life in school is a procedure of learning lessons before advancing into the society. However, in this place of learning, misdeeds such as violence, extortion and bullying are actually happening, some of which developing into suicide, murder and prostitution. For this reason, violence in school, especially, raises concerns as a serious social problem these days. Therefore, this study suggests more practical improvement programs to solve the problem of the violence in school, by first investigating the concept and the actual situation of school violence, and by better understanding the problems resulted from the school violence. The researchers of the study suggest as follows: First is about strengthening the education that builds students' personality, where we investigate the methods of personality education that suit with the current situation and suggest what is necessary to improve them. The second is about expansion of the functioning of families and of the educational role of the household heads, where we argue the importance of education in the family in addition to the education in school, and we suggest the right way for the parents to discipline their children. The third is about expansion of counseling professionals and improving social environment, where we explain the importance of counseling professionals in preventing and solving the issues in school violence and suggest expansion of these professionals and also suggest installation and operation of dedicated counseling room in schools. The fourth is about use of school sheriffs, where we suggest dispatching school sheriffs nationwide and fully use them as a countermeasure against school violence.
An Analysis of Potential Danger Factors by the Characteristics of Heavy Snow - Focused 11 Cities and Guns in Chungcheongbuk-do -
Yoon, Sanghoon ; Park, Keunoh ; Kim, Geunyoung ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 23~34
DOI : 10.15683/kosdi.2015.11.1.23
This Study analyzed heavy snow properties according to the area that was based by winter weather properties and the damage data by the heavy snow among each local government of Chungcheongbuk-do. The result of analysis, Jecheon-si and Boeun-gun are represented the highest dangerous regions by potential degree of risk by average amount of snowfall for 35 years. But, the potential degree of risk by maximum amount of snowfall for 35 years is different with it. Cheongju-si and Youngdong-gun, Goesan-gun, Boeun-gun are represented the highest dangerous regions. Examining the frequency of regions with potential danger factors according to the characteristics of heavy snowfall, Boeun-gun and Jecheon-si, Goesan-gun, Youngdong-gun, Cheongju-si is derived the highest dangerous regions in Chungcheongbuk-do.
Study on Seismic Fragility Analysis of Water Supply Facilities
Lee, Changsoo ; Shin, Deasub ; Lee, Hodam ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 35~43
DOI : 10.15683/kosdi.2015.11.1.35
In this study, The failure of water supply facilities is categorized into two phases: functional failure and complete collapse. The fragility curve of water supply facilities under PGA has been developed for two loading cases: actual overseas earthquake and Korean artificial earthquake. The seismic fragility of water supply facilities has been analyzed and compared about failure phases and PGA. From the analysis results, the probability of failure of the wrapped steel pipe and ductile case iron pipe under Korean artificial earthquake has been shown as lower than that under actual overseas earthquake in the range from 0.1 to 0.4. The suggested seismic fragility curve by using Korean artificial earthquake can be exploited in a reasonable seismic design reflecting Korean local ground condition.
A Behavior Test on a Frictional-Wedge-Type Vibration Isolation Device for Vibration Reduction of a Railway Track
Lee, Chanyoung ; Choi, Sanghyun ; Lee, Yooin ; Kwon, Segon ; Koh, Yongsung ; Ji, Yongsoo ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 45~54
DOI : 10.15683/kosdi.2015.11.1.45
In the case of railway facilities in cities such as a railway station or a bridge, the significance of design for reducing vibration and noise is getting more significant. The vibration control solution is in need especially for an elevated railway station to block vibration of a train and secondary noise effectively. Even though a vertical vibration isolation device is able to be applied effectively to railway facilities such as elevated railway stations which transfer vibration directly from a train to a structure, the development of the vertical device is much slower than a horizontal vibration isolation device. In this paper, a vibration isolation device using wedge type friction material which is currently developing to reduce train-induced vibration effectively is introduced and test results for verification of dynamic performance is also presented. The vibration test on a concrete structure equipped with the developed vibration isolation device is conducted through which the isolation performance and dynamic properties are verified and needs for improving the performance of the device is identified.
Nationwide Inundation Analysis method for Flood and Storm Disaster Insurance Rate
Yoo, Jaehwan ; Song, Juil ; Jang, Moonyup ; Kim, Hantae ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 55~62
DOI : 10.15683/kosdi.2015.11.1.55
This study suggested Nationwide Inundation Analysis method for Storm and Flood Damage Insurance Rate. Suggested modified Level-Pool method considers Zoning of urban plan to reflect real inundated area and limit inundation-boundary. Inundated area, as results of modified Level-Pool method, compared with inundation risk area on "storm and flood damage mitigation total plan". Simulated inundated area by modified Level-Pool method was more matched than results of traditional method. Therefore, modified Level-Pool method could be useful to analyze nationwide inundated area.
A Study on the Safety Management Procedures during Theme Groups Experiential Learning Experiences
Bang, Sungmin ; Kim, Changho ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 63~72
DOI : 10.15683/kosdi.2015.11.1.63
This study aims to examine the state of accidents and related issues related to Theme Groups experiential learning experiences of students and suggest ways to improve security measures to prevent future incidents. Case studies of the sunken Sewol ferry and the collapse of the gymnasium at Mauna resort in Gyeongju are conducted by analyzing the existing literature and the data collected from the media sources and related agencies. With a basis on the findings of the analyses, it is suggested that legal foundation and disaster and risk management systems (systematic revision of the laws, raised safety awareness among citizens, production and education of security managers, formation of disaster management organizations, establishment of headquarters in case of emergency and installation of first aid facilities, improved national response system, enforcement of disaster drills, introduction of assessment system, etc.) must be established to contribute to creating a safer society.
A Study on Obtaining Feedback Function of Disaster Information Management using Information & Communication Technology
Ko, Jaesun ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 73~88
DOI : 10.15683/kosdi.2015.11.1.73
Due to the cases of recent global warming and unusual weather etc., large-scale natural disasters such as typhoons, floods, snow damage occur frequently across the continents such as Southeast Asia and North America, South America etc. and risks of earthquakes and tsunami are also increasing gradually in Korea which has been regarded as a safe zone and disaster types are also being diversified such as typhoons, floods, heat waves, heavy snow and damage scale is also enlarged. In addition, due to geographical characteristics or lack of infrastructure, disasters tended to occur intensively around a specific region or city in the past but disasters occur throughout the country in recent years so preparation for disaster prevention has emerged as an urgent challenge issue. Therefore, considering that the plan of obtaining the effective feedback function of disaster Information is very important in the proactive and software aspects for disaster reduction, this paper analyzed this three aspects of contents, procedural and contextual aspects and proposed the plan. First, in the content aspect, building disaster prevention information communication Infrastructure, building urban and regional disaster prevention system, obtaining concurrency and sharing of information and second, in the procedural aspect, active utilization of ICT(Information and Communication Technology) of the prevention stage, disaster prevention information collection and analysis reinforcement of the preparation stage, improvement of decision-making structure and field command system of the response stage, recovery system related information promotion of the recovery stage were proposed as alternatives and finally, in the contextual aspect, if disaster prevention information is effectively managed through maintenance of disaster prevention information related systems, obtaining domainality by disaster prevention work, improvement of the ability to judge the situation, obtaining comprehensive and feedback function etc, it is considered to significantly contribute to reducing natural disasters.
Experimental Analysis of Vibration Transfer Characteristics of an Elevated Railroad Station
Choi, Sanghyun ; Yoo, Yong ; Kim, Jinho ; Kwon, Segon ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 89~96
DOI : 10.15683/kosdi.2015.11.1.89
To reduce noise inside an elevated railroad station, the vibration of the station structure should be lowered, and to establish more effective anti-vibration measures it is required that, reflecting the track-bridge-structure interaction, the transfer characteristics of vibration induced by a train is well identified. In this paper, the current status of domestic railroad stations is classified, and the vibration transfer characteristics is analyzed via measurement data from representative elevated stations. From the analysis results on the measurement data, in transferring vibration from the track to the structure, remarkable vibration reduction in higher frequency range is observed, and, in some stations, amplified response characteristics in lower frequency range is identified. Also, for stations with floating track system or TPS type, relatively greater reduction in transferred vibration is observed.
A Study on the Planning of Civil Defense Shelter and Design 3 - Focusing on Considerations Related to Military Threat -
Park, Namkwun ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 97~106
DOI : 10.15683/kosdi.2015.11.1.97
Currently, South Korea is exposed to various attacks of North Korea such as traditional, nuclear, and ABC weapons. Now it is hard to make an accurate estimate the damage may have been occurred to citizens due to those attacks. It is only possible to assume the rough outline. As a countermeasure to such military threats of North Korea, government-aided evacuation facilities services are going along across the board concerning the object, installation range, budget, and drawing standards. Whereas, in case of public evacuation facilities, there is no special regulation or principle in designation. Since various facilities are regarded as applicable, any protection against military threats can't be anticipated. In this study, military threats provoked by North Korea are figured out, thus the problem of plan and design that public evacuation facilities have are pointed out. This study suggest the result and proposal.
FFC2Q and XP-SWMM Comparative Study to Analyze Runoff Reduction by Urban Design Techniques
Song, Juil ; Lee, ByoungJae ; Yoo, Jaehwan ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 107~119
DOI : 10.15683/kosdi.2015.11.1.107
The flood or inundation that occur in high-density city can paralyze urban functions and cause a lot of casualties. In this study, to minimize the damage, the disaster mitigating urban design techniques for the divided basin as disaster occurring point, disaster vulnerable site, urban responding region are applied. First of all, to do this, it is necessary to verify the effectiveness of urban design techniques by simulating them. Therefore, in this paper, the applicability of urban runoff models used in domestic disaster reduction study was investigated to analyze the outflow decrease efficiency of urban design techniques. As the reviewing results, the limitations of the lumped models such as FFC2Q and XP-SWMM are presented.
The Study on Takaful in Islamic Countries
Kim, Jongwon ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 121~133
DOI : 10.15683/kosdi.2015.11.1.121
A classical commercial insurance, which is used widely as the risk management methods for risk transferring and risk financing, includes the factors of interests, gambling and uncertainty, In 1985 Islamic Fiqc Academy declared that the classical commercial insurance violates the Islamic fundamental principles and beliefs, alteratively recommending a mutual insurance and takaful. A basic principle of takaful is the mutual aid in the Islamic community. On the basis of mutual aid, takaful participants (insurance policyholder) establishes the takaful fund, which is cooperation fund by participant contribution. Takaful fund is separated from shareholders' fund, and the profit and loss of takaful fund are responsible for takaful policyholder. Ownership and operation right of takaful belong to the takaful participants. In takaful, takaful company takes a role of agent or management operator. Comparing to the classical insurance, takaful has the rights of profit dividend, voting of executives, access to accounting books etc. which are additional favors for business company or individuals as takaful participants. Business companies and individuals should consider to use takaful to transfer risk and to enjoy takaful's additional advantages.
Study on the Fire Risk Prediction Assessment due to Deterioration contact of combustible cables in Underground Common Utility Tunnels
Ko, Jaesun ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 135~147
DOI : 10.15683/kosdi.2015.11.1.135
Recent underground common utility tunnels are underground facilities for jointly accommodating more than 2 kinds of air-conditioning and heating facilities, vacuum dust collector, information processing cables as well as electricity, telecommunications, waterworks, city gas, sewerage system required when citizens live their daily lives and facilities responsible for the central function of the country but it is difficult to cope with fire accidents quickly and hard to enter into common utility tunnels to extinguish a fire due to toxic gases and smoke generated when various cables are burnt. Thus, in the event of a fire, not only the nerve center of the country is paralyzed such as significant property damage and loss of communication etc. but citizen inconveniences are caused. Therefore, noticing that most fires break out by a short circuit due to electrical works and degradation contact due to combustible cables as the main causes of fires in domestic and foreign common utility tunnels fire cases that have occurred so far, the purpose of this paper is to scientifically analyze the behavior of a fire by producing the model of actual common utility tunnels and reproducing the fire. A fire experiment was conducted in a state that line type fixed temperature detector, fire door, connection deluge set and ventilation equipment are installed in underground common utility tunnels and transmission power distribution cables are coated with fire proof paints in a certain section and heating pipes are fire proof covered. As a result, in the case of Type II, the maximum temperature was measured as
and line type fixed temperature detector displayed the fire location exactly in the receiver at a constant temperature. And transmission power distribution cables painted with fire proof paints in a certain section, the case of Type III, were found not to be fire resistant and fire proof covered heating pipes to be fire resistant for about 30 minutes. Also, fire simulation was carried out by entering fire load during a real fire test and as a result, the maximum temperature is
, almost identical with
during a real fire test. Therefore, it is considered that fire behaviour can be predicted by conducting fire simulation only with common utility tunnels fire load and result values of heat release rate, height of the smoke layer, concentration of O2, CO, CO2 etc. obtained by simulation are determined to be applied as the values during a real fire experiment. In the future, it is expected that more reliable information on domestic underground common utility tunnels fire accidents can be provided and it will contribute to construction and maintenance repair effectively and systematically by analyzing and accumulating experimental data on domestic underground common utility tunnels fire accidents built in this study and fire cases continuously every year and complementing laws and regulations and administration manuals etc.
A Study on Factors Affecting the Effects of High Building Disaster Administration System -Focused on Seoul Fire Fighters' Realization-
Kim, Jinkeun ; Park, Chanseok ;
Journal of The Korean Society of Disaster Information, volume 11, issue 1, 2015, Pages 149~162
DOI : 10.15683/kosdi.2015.11.1.149
Today, necessity of high building is increasing for security and information intensive type city development of urban space. At the same time, interest of high building disaster among human made - disaster is rising because importance of high building safety is embossed more. Therefore, the purpose of this study will present what main factors will affect high building disaster administration system that can be prevented or prepared.