http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
경전철 고가구조물 교각 기초 급속시공 위한 자립식 강섬유보강 PC 패널의 휨강도 및 합성거동 시험 평가
신정열,이안호,강덕만 한국철도학회 2024 한국철도학회논문집 Vol.27 No.1
When constructing the foundation of an elevated structure for a light rail, in the conventional case, retaining work is essential, and additional space is required for the installation and dismantling of temporary retaining facilities and foundation formwork, which also require additional construction period. For this reason, a considerable amount of upper road encroachment is inevitable for a long period of time, especially during construction in downtown areas. Therefore, a rapid construction method for the foundation of elevated structures for light rail, using steel fiber reinforced Precast Concrete(SFR-PC) panels serving as formworks, was developed to minimize the width of upper road encroachment during construction. In this paper, the bending resistance performance of SFR-PC panels was confirmed to be more than 200% through bending behavior test. In addition, bending and shearing performance evaluation experiments were performed on the integrated composite behavior of the PC panel and cast-in-place concrete structure, and it was found that there was no problem in the composite behavior when lattice girders were applied.
패턴인식기반 역사구조물건전성평가기법에 대한 수치해석 검증분석
신정열,안태기,김진호,이창길,남민준,박승희,Shin,Jeong-Ryol,An,Tae-Ki,Kim,Jin-Ho,Lee,Changgil,Nam,Min-Jun,Park,Seunghee 한국방재학회 2012 한국방재학회논문집 Vol.12 No.2
지하철은 대부분의 시설물이 지하에 위치하고 있는 관계로 안전이 최우선시 되어야하는 교통수단이다. 특히, 역사구조물의 경우 장기간의 반복적인 열차 진동과 역사 인접 공사, 지진 등 내외부에서의 진동, 충격 등으로 구조물이 손상 받을 수 있는 상황이므로, 구조물의 안전성과 이용승객의 안전을 위하여 이러한 위험 손상상태의 조기 감지를 통한 신속한 대처가 가능하도록 상시 건전성 감시가 필요하다. 이에, 본 논문에서는 수치해석을 통해 획득한 가속도 응답 데이터를 이용, 자가학습 및 지도학습의 확률론적 패턴 인식 기법에 접목하여 역사 구조물의 구조 건전성을 평가하는 알고리즘을 제안하였고, 서울지하철 충무로 역사를 대상으로 수치해석을 수행하여 제안한 패턴인식 기반 구조건전성 평가 알고리즘의 적용성을 검증하였다. Subway is a representative public transportation that safety, above all, must be ensured. Therefore, subway stations need to be promptly maintained through the early detecting of damage conditions to guarantee the structural health and passengers` safety. However, it could be easily damaged by internal or external loads such as ambient train vibrations and even earthquake loads. For this reason, in this paper, authors suggest the structural-health evaluating algorithm based on the statistical pattern recognition techniques such as supervised and unsupervised learning method. And, also the numerical studies of Chungmuro station was carried out to verify the applicability of it into the structural-health evaluation of station structures.
경전철 고가구조물의 스트럿-타이 보강 기초에 대한유한요소해석 기반 설계기법 연구
신정열,이안호,강덕만 한국철도학회 2023 한국철도학회논문집 Vol.26 No.11
Due to the characteristics of elevated-structures built in downtown areas, traffic congestion is caused by roadoccupation during construction, so construction time must be shortened. In this paper, a bridge foundation and optimal design method using strut-tie reinforcement that can reduce excavation by minimizing foundation thickness were devel-oped and design verification was conducted. As a result of comparing the general foundation design based on bending the-ory and the reinforced foundation using the strut-tie design method, it was confirmed that a reinforced foundation can reduce the thickness about 20% compared to a general foundation. In addition, the optimal design of the strut-tie reinforce-ment, based on finite element analysis, which can approximate the actual behavior, was proposed, and the level of volume reduction was compared to that of the existing design method. It was found that thickness of reinforcement can be reduced by 20% compared to existing strut-tie design method.
경전철 고가구조물 슬림화를 위한 콘크리트 재료 연구동향
신정열(Jeong-Ryol Shin),박재임(Jae-Im Park),이안호(An-Ho Lee) 한국철도학회 2013 한국철도학회 학술발표대회논문집 Vol.2013 No.5
최근 신교통 수단으로 건설된 부산, 김해, 의정부, 용인 등 국내 경전철은 상당부분 도심지 고가형태로 건설되어 있다. 건설 당시, 도심지 내에 건설되는 점을 고려하지 못한채 구조물의 기능적인 측면만을 고려하여 형고가 높고 단면이 큰 육중한 기존의 철도 고가구조물 형태로 건설되어 도시 미관을 해치고 있다. 이로 인해 고가형태의 경전철사업추진이 어려운 실정이다. 최근 국내외에서 콘크리트 구조물의 자중 및 부재의 단면저감과 함께 유지관리비를 절감하기 위해 고강도, 경량화 및 친환경적인 고성능콘크리트를 교량 및 토목구조물에 적용하려는 사례가 증가하고 있는 추세이다. 이에 본 연구에서는 경전철 고가구조물의 슬림화를 위한 기초 연구로서 구조물의 미관과 더불어 기능성, 경제성 및 안정성을 모두 고려한 합리적인 설계 및 시공기술 개발을 위하여 최근에 개발된 고강도, 고성능 및 경량화 콘크리트에 대한 연구동향을 조사 분석하였다. Light rail transit (LRT) system has been generally constructed in the form of elevated structures in Korea. Without taking into account the point that LRT system is constructed within the city, massive structures which spoil urban aesthetics were constructed by considering only their functional aspects. It does make it difficult to do the LRT projects. Therefore, the rational design and construction technologies of elevated structures should be developed by considering functionality, economic feasibility, safety, and its aesthetics. In order to reduce the scale of structures, its weight, and the maintenance costs, the trend is that eco-friendly lightweight concrete, which has high-strength and high-performance, is applied to the civil structures such as bridges. In this paper, authors investigated and analyzed the recent research trend on the concrete as a basic research on the downsizing technology of elevated light-rail structures.