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이송(Lee Song),채점식(Chae Jum-Sik),박상국(Park Sang-kuk) 한국철도학회 2001 한국철도학회 학술발표대회논문집 Vol.- No.-
This paper shows the reduction effect of the earthquake-induced liquefaction potential of soils that improved by Vibro-Replacement Stone Columns. The Vibro-Replacement Stone Columns method transforms soft cohesive soils into a composite mass of compacted granular or crushed stone columns by using vibrating equipment and water jets. This study investigated and analyzed the behavior of the stone columns and composite ground using the results of in situ test and measurement at the job-site. This paper shows the evaluation of the earthquake-induced liquefaction potential of soils using in situ test. There are different types of in situ test used in the evaluation the liquefaction potential. In the particular study the Standard penetration test, and Cone penetration test were used. The N value of Standard penetration test has been used allover for a very long time. The evaluation of the liquefaction of soil was performed using the worldwide renewed Cone penetration test.
이송,손기상,최원일,채점식,오태상 한국산업안전학회 2000 한국안전학회지 Vol.15 No.4
This paper is resulted from the research to activate Self-control Safety Management system that adopted to improve an assessment system for Hazard Prevention Plan. And members of company, university and research institute have jointly participated in the research. First, it is investigated that introduced background and processing method with existing practical data & materials references in order to understand what domestic Self-control Safety Management system will be available for. And general construction company at site have their ability to assess Hazard Prevention Plan by mailing questionnaire to on thousand site, visits, and interviews. Also, It is investigated how much they have the assessment ability. It is selected to do a questionnaire survey for the status of self-regulatory safety assessment ability of the designated self-regulatory companies in order to produce and enhance the self-regulatory assessment ability and the necessity of Self-control Safety Management system. Finally, it is selected to do a questionnaire survey for fixing and the enhance Self-control Safety Management system of general construction contractors
이송,손기상,최원일,채점식,오태상 한국산업안전학회 2000 한국안전학회지 Vol.15 No.4
In order to introduce P.S.M. system adequate to domestic construction first, many cases similar to advanced foreign P.S.M. system have been collected and compared to the domestic situation. Then, the current safety management status of bridges, subways, apartment and office building construction are investigated while visiting interview, using questionnaire at site have being done. The potential hazard and measurement have been investigated for each kind of works, and the domestic introducing method of P.S.M. system is analyzed with expert discussion. In order to represent how to make out P.S.M. plan, the questionnaire is made out using each five place for bridge, subways, apartment and office building. As the weight factor for potential hazard of each work obtained from more than forty site places, is produced and shown. Also, a direction the recommendation is suggested to improve tool in each construction site with work schedule. It is thought that proposed schedule contributed to keeping in safe business administration of each company in decreasing many effort at the construction site.