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김종칠,Kim, Jong-Chil 대한석유협회 1991 석유와 에너지 Vol.1991 No.5
지구촌은 최근 21세기를 앞두고 동유럽ㆍ소련ㆍ중동 등지에서 이른바 「이데올로기의 종언」이 확산되는 한편 페레스트로이카에 대한 다각적 추진이 한창이다. 뿐만 아니라 그러한 개혁바람과 더불어 세계 도처에서는 현재의 국경구획에 불만을 갖는 여러민족들이 자신의 고유문화와 종교신앙을 부흥시키자는 조직운동이 정부정책과 마찰을 빚고 있다. 국제경제에도 영향이 많은 이런 문제지역들에 관해 외지자료를 통해 살펴본다.
수평재하시험을 이용한 철도교 기초의 P-y 곡선에 관한 연구
김종칠(Jong-Chil Kim),사공명(Myung Sakong),조국환(Kook-Hwan Cho) 한국철도학회 2011 한국철도학회 학술발표대회논문집 Vol.2011 No.10
A significantly larger lateral load and moment are applied on a high speed railway bridge foundation than other bridge foundations. Therefore most of bridge foundations on Honam high speed railway project were designed by high strength steel pipe piles to resist lateral load and moment which caused the increase of construction costs. In order to perform optimum design it is important to estimate accurate lateral resistance when designing this type of structure. Lateral load tests were carried out based on the field design data with the purpose of examining the lateral behavioral characteristics of a railway bridge foundation. The standard load test method(ASTM D 3966) was used for field tests by applying twice of design load. Total four load tests were performed on high speed railway bridge foundations with strain gages installed by every 1m along piles to measure load-resistance characteristics under applied lateral loads. The back-calculated P-y curves from strain gages were compared with estimated P-y curves using theoretical methods based on geotechnical investment data. Back-calculated P-y curves from field tests for sand and clay ground conditions were presented in this paper which are different from theoretical P-y curves. By using the research results of this study more accurate estimations of pile design under lateral loads can be available for similar geotechnical conditions.