Journal of Korean Tunnelling and Underground Space Association (한국터널지하공간학회 논문집)

Korean Tunnelling and Underground Space Association (한국터널지하공간학회)
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A study on the correlation of the structural integrity's reduction factors using parametric analysis

매개변수 해석을 이용한 구조물 건전도 저감 영향인자 상관성 연구

  • La, You-Sung (Dept. of Geotech and Tunnel, SEOHA Engineering, Co., Ltd.) ;
  • Park, Min-Soo (Dept. of Geotech and Tunnel, SEOHA Engineering, Co., Ltd.) ;
  • Koh, Sungyil (SEOHA Engineering, Co., Ltd.) ;
  • Kim, Chang-Yong (Dept. of Geotechnical Engineering Research, Korea Institute of Civil Engineering and Building Technology)
  • 나유성 ((주)서하기술단 지반터널부) ;
  • 박민수 ((주)서하기술단) ;
  • 고성일 ((주)서하기술단) ;
  • 김창용 (한국건설기술연구원 지반연구본부)
  • Received : 2021.10.20
  • Accepted : 2021.11.01
  • Published : 2021.11.30
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Abstract

In order to evaluate the impact of ground subsidence and superstructures that are inevitably caused by tunnel excavation, a total of seven major influencing factors of surface subsidence and structural soundness reduction were set, and a Parameter Study using numerical analysis was conducted. Stability analysis was performed using scheme of Boscardin and Cording method and the maximum subsidence amount and the angular displacement, and correlation analysis was performed for each major influencing factor. In addition, it was applied that used the mutual behavior of the ground and the structure by parameter analysis in the site of the 𐩒𐩒𐩒 tunnel located in Hwaseong-si, Gyeonggi-do, and the applicability of the site was analyzed. As a result, the error was found to be 1.0%, and it could be used as a basic material for determining the appropriate tunnel route under various conditions when evaluating the stability of the structure according to tunnel excavating at the design stage.

터널 굴착으로 인해 필연적으로 발생되는 지반침하 및 상부 구조물 영향 평가를 수행하기 위해 지표침하와 구조물 건전도 저감의 총 7개의 주요 영향 인자들을 설정하고 수치해석을 이용한 Parameter Study를 수행하였다. 그 결과를 통해 Boscardin and Cording 구조물 손상도표를 이용한 안정성 분석, 최대침하량과 각변위를 이용한 안정성 분석을 수행하고 각각의 주요 영향 인자들에 대한 상관성 분석을 실시하였다. 또한, 매개변수 해석을 통한 지반 및 구조물 상호거동 양상을 이용하여 경기도 화성시에 위치한 𐩒𐩒𐩒터널 현장에 적용하고 현장 적용성을 분석하였다. 그 결과 오차가 약 1.0%로 나타나 설계단계에서의 터널 굴착에 따른 구조물 안정성 평가 시 다양한 조건에서 적합한 노선 결정을 위한 기초 자료로 활용될 수 있도록 하였다.

Keywords

Acknowledgement

본 연구는 국토교통과학기술진흥원의 지원(과제명: 도심 지하 교통 인프라 건설 및 운영 기술 고도화 연구, 과제번호: 21UUTI-B157786-02)으로 수행되었으며, 이에 깊은 감사를 드립니다.

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