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한국철도공사의 기업연금제도 도입방안 : 재무적 관점을 중심으로
황선경(Hwang Sun-Kyoung),채일권(Chae Il-Kwon),김광용(Kim Kyung-Yong) 한국철도학회 2006 한국철도학회 학술발표대회논문집 Vol.- No.-
Korean government(Department of Labors) introducing new retired pension system in Korean companies since December 1, 2005, because Korean corporations laid off their employee and the corporate paradigm changed after 1998. Nowadays, KORAIL(Korea Railroad Corporation) have 3 pension systems, but KORAIL need to introduce new corporate pension system to response social change.. This study suggest that KORAIL introduce new corporate pension system and compare to analyze one KORAIL"s affiliated company in focusing on corporate financial prospective.
신경수 ( Kyoung-su Shin ),임병훈 ( Byung-hoon Lim ),황선경 ( Sun-kyung Hwang ) 한국구조물진단유지관리공학회 2020 한국구조물진단유지관리공학회 논문집 Vol.24 No.6
국내 건축물은 지진이나 기초 부동침하 등으로 인해 건물의 기울어짐, 붕괴 등의 문제가 발생하기 때문에 건축물의 지반강화에 대한 필요성이 증가하고 있다. 이에 대한 보강방법으로 깊은 관입량과 지지력 보강에 유리한 고강도 콘크리트 말뚝의 사용량이 증가하고 있으며 나 강도가 부족할 경우 현장타설 시 두부 파손 등의 문제가 발생할 수 있어 강도에 대한 철저한 유지관리가 필요한 실정이다. 이에 본 연구에서는 산업부산물인 고로슬래그 미분말을 치환한 고강도 콘크리트 말뚝의 강도 특성에 대해 검토하였다. 그 결과, 고로슬래그 미분말을 10~20% 치환할 경우 압축강도가 증가하였으며, 20% 치환시 압축강도는 80.6MPa로 OPC 시험체에 비해 5% 증가하는 것을 확인하였다. The necessity for ground reinforcement of structures has been increasing in South Korea because buildings have encountered constructional problems such as inclined structures and collapses caused by earthquakes or differential settlement of the foundations. With regard to a ground reinforcement method, an increasing number of high-strength concrete piles have been used based on their advantages, including a wide range of penetration depth and a high load-bearing capacity. However, problems such as the destruction of a pile head during on-site placement work can occur when the pile has insufficient strength. For this reason, the strength of such piles should be managed more thoroughly. Thus, this study analyzed the strength properties of high-strength concrete piles using blast furnace slag (BFS) powder as a cement replacement, which was generated as an industrial byproduct. The analysis results indicated that the compression strength of the concrete piles increased when 10% to 20% of the cement was replaced with ground granulated blast-furnace slag (GGBS). In addition, the compression strength of the concrete piles was calculated to be 80.6 MPa when 20% of the cement was replaced with GGBS, which was greater by 5% than that of an ordinary Portland cement (OPC) specimen