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2024 Vol.34, Issue 3 Preview Page

Original Article

Study on Establishing Comprehensive Management Measures to Ensure Stability of Existing Metro when Constructing Ground Structures Adjacent to Subway

지하철 인접 지상구조물 설치시 기존 지하철 안정성 확보 위한 종합관리대책 수립 연구

Jae-Hong Lim1
,
Guk-Hwan Cho2*
임 재홍1
,
조 국환2*
1PhD Candidate,Department of Railway Construction Engineering,Seoul National University of Science and Technology
2Full Professor, Department of Railway Construction Engineering, Seoul National University of Science and Technology
1서울과학기술대학교 철도전문대학원 박사과정
2서울과학기술대학교 철도전문대학원 교수
*Corresponding Author
30 June 2024. pp. 196-207
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Abstract

In this study, a comprehensive management plan was proposed to ensure the stability of the existing subway when constructing ground structures adjacent to the subway. In the first step, the measurement inspection cycle is selected through proximity evaluation, in the second step, the stability of existing subway and station structures such as displacement and stress is reviewed through 3D numerical analysis considering the construction stage and groundwater influence, and in the third stage, the safety of train operation was reviewed by examining the track stability, and based on the numerical analysis results in the fourth stage, the displacement concentration section was selected as an intensive management section and it was proposed that intensive measurement management be performed.

Keywords
Adjacent construction
Proximity evaluation
Rail Impact examine
Measurement management

근래 들어 도심지 구간에서 공동주택 건설과 같은 개발행위가 빈번히 이루어짐에 따라 운영 중인 기존 지하철과 인접하여 지상구조물이 시공되는 경우 지하철 구조물 및 궤도에 영향을 끼쳐 안정성 및 사용성 에 문제를 발생시킬 수 있다. 본 연구에서는 지하철 인접 지상구조물 시공시 기존 지하철의 안정성 확보를 위한 종합관리대책을 제안하였다. 기존 지하철에 대한 근접도 평가, 기존 구조물 안정성 검토, 궤도 안정성 검토, 집중관리구간 선정 및 계측계획 수립 등의 4단계 종합관리대책을 수립하여 인접시공 영향을 최소화하였다. 1단계 근접도 평가를 통해 계측 점검주기를 선정하고, 2단계 시공단계 및 지하수 영향을 고려한 3차원 수치해석을 통해 기존 지하철 및 정거장 구조물의 변위, 응력 등 안정성을 검토하고, 3단계 궤도틀림 등 궤도 안정성을 검토하여 열차운행의 안전성을 검토하며, 4단계 수치해석 결과를 바탕으로 변위 집중구간을 집중관리구간으로 선정하여 중점적인 계측관리가 수행하도록 제안하였다.

키워드
인접 시공
근접도 평가
궤도 안정성 검토
계측관리
References
1

Korea National Railway, 2016, Guidelines for Track Maintenance, p.126-127.

2

Korea National Railway, 2020a, Operation Manual of Design Safety Verification of Proximity Construction of Operation Line, p.367.

3

Korea National Railway, 2020b, Tunnel planning (KR C-12010), p.4.

4

Korean National Railroad, 1999, Design Criteria for Railroad(Bridges), p.13.

5

Seoul Metro, 2018, Regulations for management of excavation construction adjacent to the subway, p.9.

6

Seoul Metro, 2023, Guidelines for Management of Nearby Subway Excavation Construction Site, p.11-12.

7

Seoul Metropolitan Infrastructure Headquarters, 2015, Improvement of Seoul Subway Measurement Management Guidelines.

8

Seoul Metropolitan Rapid Transit Corporation, 2001a, Existing Tunnel Proximity Management Manual.

9

Seoul Metropolitan Rapid Transit Corporation, 2001b, Working-level Management of Excavation Works in Adjacent to Urban Railroad.

10

Son, M. and Cording, E.J., 2005, Response analysis of frame structures with the consideration of tunnel construction, KSCE, Journal of Civil and Environmental Engineering Research, 32(3C), 121-127.

Information
  • Publisher :Korean Society for Rock Mechanics and Rock Engineering
  • Publisher(Ko) :한국암반공학회
  • Journal Title :Tunnel and Underground Space
  • Journal Title(Ko) :터널과 지하공간
  • Volume : 34
  • No :3
  • Pages :196-207
  • Received Date : 2024-05-31
  • Revised Date : 2024-06-13
  • Accepted Date : 2024-06-17
  • DOI :https://doi.org/10.7474/TUS.2024.34.3.196
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