Journal of the Korean Society of Hazard Mitigation最新文献

Comparative Analysis of Korean and Japanese Standards for Natural Smoke Ventilation in Logistic Warehouses 韩国和日本物流仓库自然排烟标准比较分析

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.47

Yerim Huh, Yoolim Lee, Yunseong Kim, Seunghyun Jin, Inhyuk Koo, Young-Phil Kwon

{"title":"Comparative Analysis of Korean and Japanese Standards for Natural Smoke Ventilation in Logistic Warehouses","authors":"Yerim Huh, Yoolim Lee, Yunseong Kim, Seunghyun Jin, Inhyuk Koo, Young-Phil Kwon","doi":"10.9798/kosham.2023.23.6.47","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.6.47","url":null,"abstract":"This study investigated the design methodologies outlined in Korean and Japanese legislation, along with Japanese design guidelines, pertaining to natural smoke ventilation systems in logistics warehouses. Subsequently, we determined the effective area of the smoke exhaust system based on the combustible materials and building characteristics. Our findings indicated that the calculated effective area per the statutory standards of both nations was 10 m2 and 20 m2, respectively. According to Japanese guidelines, the space accommodating the CUP ranged from 24.71 m2 to 13.76 m2 for floor heights between 7 to 16 m, while the space accommodating CEP ranged from 41.83 m2 to 22.54 m2. Analyzing the quantity of smoke emitted through the calculated effective area, we observed that, when applying domestic legal standards, the smoke exhaust rate consistently remained lower than the plume flow rate. Conversely, under the Japanese standard, the smoke emission efficiency of the CUP loading warehouse surpassed that of smoke emission from 9 m to 16 m, while it was lower from 7 m to 8 m. Notably, the smoke exhaust rate consistently exceeded the generated smoke quantity in all instances within the effective area governed by the guidelines.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"116 11","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139134196","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Mechanical Properties of Window Frames Exposed to High Temperature (II) 暴露于高温下的窗框的机械特性 (II)

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.145

Byeong-Heun Lee

引用次数: 0

Network-level Method for Road Infrastructure Maintenance Decision Making 道路基础设施维护决策的网络级方法

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.55

Yangrok Choi, Youngjae Bae, Jangho Lim, Jiwoo Lee, Kyungrok Kwon, Jungsik Kong

引用次数: 0

A Study on Causes and Stability of Masonry Retaining Walls by Case Analysis 通过案例分析研究砌体挡土墙的成因和稳定性

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.259

Kyunseo Park, Sounghun Heo, Youngdai Lee

{"title":"A Study on Causes and Stability of Masonry Retaining Walls by Case Analysis","authors":"Kyunseo Park, Sounghun Heo, Youngdai Lee","doi":"10.9798/kosham.2023.23.6.259","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.6.259","url":null,"abstract":"Masonry retaining walls, which have been used since long time, have recently been widely used in the construction of small complexesas an easy-to-purchase material and eco-friendly structure. Disasters owing to the collapse of these masonry retaining walls have frequently occurred over time. The purpose of this study is to quantitatively evaluate the causes for the collapse of masonry retainingwalls by collecting and analyzing collapse data using collapse phenomenon field trips, literature review, and search tools, and to use this analysis data, to suggest measures to prevent the collapse of masonry retaining walls. As a result of collecting and analyzing collapse case data, this study found that the main causes of masonry retaining wall collapse were the loss of foundation ground (scour), ground displacement owing to the excavation of adjacent land, settlement owing to ground softening because of rainfallinfiltration, poor drainage, and inclination of stonework. The causes for collapse were of eight types, including slope sliding additionalloading, and vibration, and 16 types when literature data were included. An analysis of the collapse frequency based on the causes for collapse revealed that the two causes for collapse, foundation and drainage, accounted for approximately 60% of the total cause,and measures for stability and Governing law of critical factor were proposed using this result.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"86 18","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132258","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Evaluation of Compressive Strength of UHPC Cured in A Winter Low-temperature 冬季低温下固化的超高性能混凝土抗压强度评估

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.237

Kwangmo Lim, Yongsik Yoon, Kyungtaek Koh, Kyongchul Kim

{"title":"Evaluation of Compressive Strength of UHPC Cured in A Winter Low-temperature","authors":"Kwangmo Lim, Yongsik Yoon, Kyungtaek Koh, Kyongchul Kim","doi":"10.9798/kosham.2023.23.6.237","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.6.237","url":null,"abstract":"Deteriorating concrete quality is a typical problem reported in a low-temperature environment in winter. Therefore, efforts to evaluate and secure the quality of concrete are always carried out. In this study, the researchers primarily focused on developing curing methods and improving the quality of mixing materials, including chemical admixture, to secure compressive strength of concrete. The study investigated the compressive strength of concrete according to its age and observed that the compressive strength increases under the experimental conditions without any additional protection measures for the winter season. The compressive strength of the cured concrete was measured at 0 and -15 ℃ for 100 MPa Ultra-high-performance concrete (UHPC). Additionally, the property of compressive strength was compared with that of UHPC, which suffered damage due to the cold, went through a certain recovery period at room temperature. Consequently, it was confirmed that UHPC, damaged from the cold weather, achieved the specific compressive strength after 84 days. The findings from this study can enhance further understanding of the characteristics of UHPC in winter environments and contribute to establishing a construction plan for withstanding the winter seasons.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"112 46","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139133151","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Analysis of Spatial Clustering Patterns of Fire Misidentification Through Spatial Autocorrelation Analysis: Focusing on Gyeongsangbuk-do 通过空间自相关分析对火灾误判的空间聚类模式进行分析：以庆尚北道为中心

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.153

Semyeoung Lee

引用次数: 0

Possibility of Fire Spreading Owing to Radiant Heat from Fire Shutters in Logistics Facilities 物流设施中防火卷帘的辐射热导致火灾蔓延的可能性

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.167

Heewon Seo, Sangbum Lee, Daehoi Kim, Gilyong Lee

引用次数: 0

Development of an Optimal RTK Calculation Program Using Genetic Algorithm 利用遗传算法开发最佳 RTK 计算程序

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.307

Da Hae Yu, Jin Hyuk Jeon, Jung Ho Lee, Dong Jun Kim

引用次数: 0

Improvement of Disaster Prevention Technology Guidance 改进防灾技术指导

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.25

Jongho Park, Yeonjeong Seong, Younghun Jung

{"title":"Improvement of Disaster Prevention Technology Guidance","authors":"Jongho Park, Yeonjeong Seong, Younghun Jung","doi":"10.9798/kosham.2023.23.6.25","DOIUrl":"https://doi.org/10.9798/kosham.2023.23.6.25","url":null,"abstract":"In recent times, the strengthening of government safety regulations, such as the implementation of the Serious Accidents Punishment Act, has not succeeded in reducing industrial accidents at small and medium-sized worksites, specifically in the construction sector. The comprehensive amendment of the 2020 Industrial Safety and Health Act brought about considerable changes after 30 years, thereby impacting the safety measures of construction sites. Although the implementation of construction accident prevention technology guidance is mandated, it has not been effectively and practically applied. This study used the analytic hierarchy process analysis, considering quantitative and qualitative aspects, to recommend important factors for enhancing the construction accident prevention technology guidance system. It aims to improve safety management at small and medium-sized construction sites by emphasizing institutional, economic, company-specific, and facility-related factors. The findings of this study can help evolve strategies to improve the construction disaster prevention technology guidance system by providing essential insights and effective requirements that need to be prioritized.","PeriodicalId":416980,"journal":{"name":"Journal of the Korean Society of Hazard Mitigation","volume":"35 4","pages":""},"PeriodicalIF":0.0,"publicationDate":"2023-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"139132426","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Fire Resistance Performances of Composite Roofs According to Application and Non-Application of Purlin 应用和不应用檩条时复合材料屋顶的耐火性能

Journal of the Korean Society of Hazard Mitigation Pub Date : 2023-12-31 DOI: 10.9798/kosham.2023.23.6.209

Suhwan Choi, Jaesung Lee, Kyeong-Hwan Kang, Jisun You

引用次数: 0