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검색결과 5건
1.
2016.04
KCI 등재
구독 인증기관 무료, 개인회원 유료
이 논문에서는 벽체의 형상(평면벽체, 곡면벽체) 및 벽체에 도입된 긴장력이 충돌저항성능에 미치는 영향을 수치해석적 기법을 사용하여 평가하고자 하였다. 벽체의 곡률 및 긴장력 도입률을 변수로 총 12 케이스의 충돌해석을 수행하였으며, 충돌체로는 상용 민항기엔진의 3차원 상세모델을 사용하였다. 충돌저항성능을 평가하기 위해 관입깊이와 벽체 중앙부 후면의 최대 변위를 비교하였다. 긴장력의 도입에 의해 관입깊이는 약 60∼80% 수준으로 감소하는 것으로 나타났으나, 후면 변위는 큰 차이가 나타나지 않았으며, 벽체 형상에 따른 차이는 상대적으로 크지 않은 것으로 나타났다.
4,000원
2.
2018.10
서비스 종료(열람 제한)
The second impact from the edge of cargo was found to be an crucial event causing large volume loss of concrete median barrier. Therefore, in order to improve local impact resistance of concrete median barrier during second impact, local model was developed and evaluations were conducted. Developed concrete median barrier showed the 125 kJ impact level based on conducted analysis.
3.
2018.04
서비스 종료(열람 제한)
In this study, we performed a series of experimental studies on the effect of tie-bars and steel-plate strength on the impact resistance of SC walls. A total of 8 impact tests were planned to investigate the impact resistance performance of SC walls at the extreme performance testing center of Seoul National University in Korea. The specimens were designed with the main test parameters of yield strength of steel plate and tie-bars. The results from this study will be used to improve and optimize the AISC N690 design equation for SC walls.
4.
2012.11
서비스 종료(열람 제한)
The objective of this study is to assess the structural response and impact energy absorption characteristics of reinforced concrete (RC) and steel plate concrete (SC) barrier walls under missile impact loading considered in the design of NPP (nuclear power plant)'s facilities. The study considered the barrier wall response under external tornado-generated missiles (e.g., steel pipe and automobiles).
5.
2012.11
서비스 종료(열람 제한)
The objective of this study is to develop the reinforcing design method of the NPP (nuclear power plant)'s steel plate concrete (SC) wall for enhancement of impact resistance capacity under the aircraft and missile impact loading considered in the design of NPP's facilities. This study investigated the effects of the several parameters that can affect impact resistance capacity of SC wall using finite element analysis method.(e.g., thickness of concrete and steel plate, material strength of concrete and steel, and other reinforcing design method).
