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An evaluation of influence factors based on the limit state design-AASHTO LRFD for structural analysis of shield tunnel segment lining

한계상태설계법-AASHTO LRFD를 적용한 쉴드터널 세그먼트 라이닝의 구조해석 영향인자 평가

  • Kim, Yang-Woon (Dept. of Geotechnical Engr., Pyunghwa Engineering Consultants Ltd.) ;
  • Kim, Hong-Moon (Dept. of Geotechnical Engr., Pyunghwa Engineering Consultants Ltd.) ;
  • Kim, Hyun-Su (Dept. of Geotechnical Engr., Pyunghwa Engineering Consultants Ltd.) ;
  • Lee, Seong-Won (Korea Institute of Civil Engineering and Building Technology)
  • 김양운 ((주)평화엔지니어링 지반부) ;
  • 김홍문 ((주)평화엔지니어링 지반부) ;
  • 김현수 ((주)평화엔지니어링 지반부) ;
  • 이성원 (한국건설기술연구원)
  • Received : 2017.12.01
  • Accepted : 2017.12.26
  • Published : 2018.01.31

Abstract

Recently, the limit state design method in the design of the structure is in global trend, but it is limited to a few structures in Korea. Since the introduction of the limit state design method has recently been attempted for tunnels, which are the main underground structures, it is surely necessary to understand the latest limit state design method. Therefore, based on the recently published AASHTO LRFD Road Tunnel Design and Construction Guide Specification (2017), structural load factors and load combinations were reviewed, and various factors which should be applied for the review of structures have been analyzed. In this study, utility tunnel section and subway tunnel sections used in Korea were analyzed by the limit state design method, and we have analyzed the direction of application of limit state design method through studying the tendency of member force by various influential factors such as ground conditions, load modifier and joint stiffness.

최근 토목구조물의 설계에 있어 한계상태설계법 적용이 세계적인 추세이나, 국내에서는 소수의 구조물에 국한되어 사용되고 있다. 주요 지중구조물인 터널에 대해서는 한계상태설계법의 도입이 근래에 시도되고 있으므로, 최신의 한계상태 설계법에 대한 이해가 반드시 필요하다. 본 연구는 최근 발간된 AASHTO LRFD Road Tunnel Design and Construction Guide Specification (2017)을 토대로 세그먼트 터널라이닝 설계 시 구조물 하중계수, 하중조합 등을 고찰하고 이외에 구조 검토 시 반영되어야 할 다양한 영향인자에 대해 분석하였다. 본 연구에서는 국내에 적용되고 있는 전력구, 지하철 터널 단면을 대상으로 한 세그먼트 라이닝의 구조해석을 통하여, 지반조건과 하중수정계수, 이음부 강성조건 등 다양한 영향인자들이 부재력에 미치는 영향을 분석 평가하였다.

Keywords

References

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