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2013 Vol.29, Issue 9 Preview Page
Development of Design Method for Reinforced Roadbed Considering Plastic Settlement for High-speed Railway

고속철도에서의 소성침하를 고려한 강화노반 설계기법 개발

Chan-Yong Choi1
,
Won-Il Choi2
,
Sang-Jae Han3
,
Jae-Hyun Jung4
최 찬용1
,
최 원일2
,
한 상재3
,
정 재현4
1Senior Researcher, Advanced Infrastructure Research Team, Korea Railroad Research Institute
2Director, KR Institute, Korea Rail Network Authority
3CEO, Expert Group Earth And Environment Co., Ltd.
4Director, Expert Group Earth And Environment Co., Ltd.
1한국철도기술연구원 고속철도인프라연구단 TFT 선임연구원
2한국철도시설공단 KR 연구원 부장
3㈜지구환경전문가그룹 대표이사
4㈜지구환경전문가그룹 부장
교신저자. Corresponding Author. 
30 September 2013. pp. 55-69
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Abstract

An alternative design method of existing methods based on elastic theory the design method of roadbed considering plastic deformation of roadbed and stress-strain at roadbed materials with the cyclic loading of trains passing. The characteristics of the developed design method considering traffic load, number of cyclic loading and resilience modulus of roadbed materials can evaluate elastic strain as well as plastic settlement with allowable design criteria. The proposed design method is applied to standard roadbed section drawing of HONAM high-speed railway considering design conditions such as allowable elastic and plastic settlement, train speed, the tonnage of trains. As a result, required levels of resilience modulus model parameter (), unconfined compressive strength, types of soil material were evaluated.

Keywords
Reinforced roadbed
Resilient modulus
Plastic settlement
High-speed railway

본 설계법은 기존 탄성이론에 근거한 강화노반 설계방법의 대안으로 노반의 소성침하와 열차 반복하중에 따른 응력-변형 특성을 고려한 노반 설계 방법이다. 특징은 설계자가 요구하는 허용설계기준에 따라 교통하중과 열차 년간통과톤수에 따라 노반의 탄성변위 뿐만 아니라 소성침하량을 평가할 수 있다. 본 설계법을 이용하여 허용 탄성 및 소성 침하량, 열차 속도 및 총통과톤수등의 설계조건을 고려하여 호남고속철도 표준노반단면에 적용하였다. 그 결과 노반의 회복탄성계수 모델인자(), 일축압축강도, 흙 재료 종류 등의 요구수준 등을 평가할 수 있다.

References
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Information
  • Publisher :The Korean Geotechnical Society
  • Publisher(Ko) :한국지반공학회
  • Journal Title :Journal of the Korean Geotechnical Society
  • Journal Title(Ko) :한국지반공학회 논문집
  • Volume : 29
  • No :9
  • Pages :55-69
  • Received Date : 2013-05-14
  • Revised Date : 2013-07-30
  • Accepted Date : 2013-08-12
  • DOI :https://doi.org/10.7843/kgs.2013.29.9.55
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