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Comparison of Performance with Backfill Inclination Slope and Shape in Railway Abutment and Transitional Zone Using Centrifuge Model Tester

원심모형실험기를 이용한 철도 교대접속부 배면 기울기 및 형상에 따른 성능비교

Chan-Yong Choi1*
,
Hun-Ki Kim1
,
Jung-Hyun Park2
최 찬용1*
,
김 현기1
,
박 정현2
1Principal Researcher, High Speed Research Division, Korea Railroad Resarch Institute
2Graduate Student, Department of Civil Engineering, Inha University
*교신저자. *Corresponding Author. 
30 March 2018. pp. 85-93
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Abstract

A existing standard design section of transitional zone between bridge and earthwork section in high speed railway should be designed to gradually change support stiffness from bridge abutment to backfill side that were placed on cemented stabilized gravel, general gravel, soil materials. The larger the backfill slope of the general gravel and soil was more structurally stable, but there is no clear reason about them. In this study, it was compared with settlement and bearing capacity of backfill area in currently design and alternating backfill slope section using large centrifuge tester. As the experimental results, it was showed that the 1:2 slope and 1:1.5 slope have almost similar bearing capacity behavior under the load stage as railway loading level.

Keywords
Railway Abutment
Backfill Slope & Shape
Settlement
Bearing Capacity
Centrifugal Model Tester

현행 고속철도 교대 접속부 표준단면은 교대배면에서부터 시멘트안정처리골재, 일반골재, 토공부로 하부 지지강성이 점진적으 로 변화하도록 설계하고 있다. 일반골재와 토공부의 배면기울기는 기울기가 클수록 구조적으로 안정적이지만 이에 대한 명확 한 기준이 없다. 따라서 본 논문에서는 대형 원심모형실험기를 이용하여 교대 뒤채움 배면구간의 토공과 일반골재의 기울기를 변화하여 현행 표준단면과 침하 및 지지력 특성을 비교하였다. 실험결과 철도하중이 경험하는 하중단계에서는 1:2단면과 1:1.5 기울기 단면이 거의 유사한 성능을 가지고 있는 것으로 평가되었다.

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Information
  • Publisher :Korean Geosythetics Society
  • Publisher(Ko) :한국지반신소재학회
  • Journal Title :Journal of the Korean Geosynthetics Society
  • Journal Title(Ko) :한국지반신소재학회 논문집
  • Volume : 17
  • No :1
  • Pages :85-93
  • Received Date : 2017-12-14
  • Revised Date : 2018-03-06
  • Accepted Date : 2018-03-12
  • DOI :https://doi.org/10.12814/jkgss.2018.17.1.085
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