Track-Structure Interaction Analysis of Fast Hardening Track on Railway Bridge Considering Effect of Anchor and Friction

Sang-Hyeon Cho; Il-Wha Lee; Won-Seok Chung; Hee-Young Lee; Kyoung-Chan Lee

doi:10.7734/COSEIK.2018.31.1.53

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Track-Structure Interaction Analysis of Fast Hardening Track on Railway Bridge Considering Effect of Anchor and Friction 앵커와 마찰의 영향을 고려한 교량상 급속경화궤도의 궤도-교량 상호작용해석

2018. pp. 53-61

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Abstract

Ballast track requires constant maintenance work due to progress of track irregularity. Fast Hardening Track(FHT) has been developed to reduce the maintenance effort done by injecting fast hardening mortar in aged ballast to convert slab track . For the application of FHT to a railway bridge, post-installed anchors should be placed at center of the track segment to fix it on bridge. This paper presents track-bridge interaction analysis results with FHT considering stiffness and strength of post-installed anchor, age of FHT concrete and friction between FHT and bridge deck surface. Based on the analysis results, this study suggests when is good to install the anchors and allow normal operation of passing train.

Keywords

fast hardening track

railway bridge

interaction analysis

anchor

friction

자갈 궤도는 부설 후 궤도틀림이 발생하여 지속적인 유지·보수 작업이 필요하다. 이를 개선하기 위하여 기존의 자갈 궤도 에 급속경화 모르타르를 주입하여 단시간 내에 콘크리트 궤도로 치환할 수 있는 급속경화궤도가 개발되었다. 교량에 부설되 는 급속경화궤도는 교량과 궤도의 거동을 일치시키기 위하여 후설치 앵커를 궤도 세그먼트 중앙부에 시공한다. 본 논문은 앵커로 교량과 연결된 급속경화궤도와 교량의 궤도-교량 상호작용 해석을 수행하여 레일 및 앵커의 안전성을 검토하였다. 이때 앵커의 강성 및 강도, 급속경화 콘크리트의 재령, 급속경화궤도와 교량 사이의 마찰을 고려하였다. 이를 바탕으로 급속 경화궤도 부설 후 적절한 앵커의 설치시기 및 열차 정상운행 가능시기를 검토하였다.

키워드

급속경화궤도

철도교량

상호작용해석

앵커

마찰

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Information

Publisher :Computational Structural Engineering Institute of Korea
Publisher(Ko) :한국전산구조공학회
Journal Title :Journal of the Computational Structural Engineering Institute of Korea
Journal Title(Ko) :한국전산구조공학회 논문집
Volume : 31
No :1
Pages :53-61
Received Date : 2017-12-05
Revised Date : 2017-12-27
Accepted Date : 2017-12-28
DOI :https://doi.org/10.7734/COSEIK.2018.31.1.53

Journal of the Computational Structural Engineering Institute of KoreaISSN:1229-3059(Print) 2287-2302(Online)한국전산구조공학회

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