The Journal of the Convergence on Culture Technology (문화기술의 융합)

The International Promotion Agency of Culture Technology (국제문화기술진흥원)
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Displacement Behavior Analysis of Subway Tunnel Structure by Construction Step of Adjacent Excavation

인접굴착공사 시공단계별 지하철 터널구조물의 변위거동분석

  • Received : 2024.08.21
  • Accepted : 2024.11.01
  • Published : 2024.11.30
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Abstract

In Korea, an automatic measurement system is being introduced in the vicinity of subway tunnel structures to manage the safety of subway tunnel structures in real time during construction. However, the current monitoring results of the automatic measurement system are evaluated by comparing the maximum value among the results measured within a certain period with the safety management standard. In addition, the utilization of the measurement results is very low, and research on reliable standards and evaluation methods is insufficient. In this study, the construction step that affects the behavior was analyzed using the results of long-term tunnel structure displacement behavior monitoring during adjacent excavation. In the field measurement, displacement behavior monitoring data according to the construction for a total of 24 months after installing an tunnel convergence meter(TL) in the subway tunnel structure were collected. In addition, vertical displacement data that can directly affect the damage to the subway tunnel structure were collected. In this study, the process that affects the subway tunnel structure during adjacent excavation was identified using long-term measured data, and the vulnerable parts and safety were evaluated.

국내에서는 지하철 터널구조물과 인접한 위치에서 공사 시 자동화계측 시스템을 도입하여 실시간으로 지하철 터널구조물의 안전성을 관리하고 있는 실정이다. 그러나 현재 자동화계측 시스템의 모니터링결과는 일정 기간 내에 측정된 결과 중 최댓값을 안전관리기준치와 비교하여 평가하는 실정이다. 또한 측정결과의 활용도가 매우 낮으며, 믿을수 있는 기준 및 평가 방법에 대한 연구가 미흡한 실정이다. 본 연구에서는 인접굴착공사 시 장기간 터널구조물 변위거동 모니터링결과를 이용하여 거동에 영향을 미치는 시공단계를 분석하였다. 현장측정에서는 지하철 터널구조물에 내공변위계를 설치한 후 총 24개월 동안 공사에 따른 변위거동 모니터링 데이터를 수집하였다. 또한 지하철 터널구조물 손상에 직접적인 영향을 미칠 수 있는 수직방향 변위데이터를 수집하였다. 본 연구에서는 장기간 측정된 데이터를 이용하여 인접굴착공사 시 지하철 터널구조물에 영향을 미치는 공정을 파악하고 취약부 및 안전성을 평가하였다.

Keywords

References

  1. C.K. Lee, "Displacement Behavior Characteristics of Tunnels by Construction Step of Adjacent Excavation", Master thesis, Donyang University, 2024.
  2. J.Y. Choi, S.H. Kim, G.N. Yang, H.H. Lee and J.S. Chung, "Failure Analysis of Subway Box Structures According to Displacement Behavior on Serviced Urban Railway", Applied. Sciences. Vol. 12, No. 24, pp. 12637, 2022.
  3. J.Y. Choi, G.N. Yang, T.J. Kim and J.S. Chung, "Analysis of Ground Subsidence According to Tunnel Passage in Geological Vulnerable Zone", The Journal of the Convergence on Culture Technology(JCCT), Vol. 6, No. 3, pp. 393-399, 2020.
  4. J.Y. Choi, D.H. Ahn and S.H. Kim, "Behavior Characteristics of a Booted Sleeper Track System According to Substructure Deformation", Applied Sciences. Vol. 11, No. 10, pp. 1-16, 2021.
  5. J.S. Chung, D.R. Park and J.Y. Choi, "Evaluation of track irregularity effect due to adjacent excavation on serviced railway line, The Journal of the Convergence on Culture Technology(JCCT), Vol. 5, No. 4, pp. 401-406, 2019.
  6. T.S. Park and S.H. Lee, "Analyses of existing tunnel liner behaviors caused by excavation of upper layer with using laser scanning technology", Journal of the Korean Geotechnical Society, Vol. 31, No. 10, pp. 29-36.
  7. S.J. Bae, W. Jung, S. Chamrith, C.J. Kim, Y.M. Kim, S.H. Hong, J.G. Kim and J.Y. Kim, "Performance evaluation method of tunnel scanner for lining crack detection, Journal of The Korean Society of Disaster Information, Vol. 17, No. 1, pp. 39-52, 2021.
  8. H.H. Lee, "A Study on Improvement of Automatic Measurement Evaluation System for Subway Structure by Adjacent Excavation", Ph. D. thesis, Donyang University, 2021.
  9. S.H. Hong, J.G. Kim, J.Y. Cho and T.H. Kim, "A Study on the necessity of verification and certification system of inspection and diagnostic equipment for infrastructure using advanced technologies, Journal of the Society of Disaster Information, Vol. 16, No. 1, pp. 163-177, 2020.
  10. I.S. Kim and C.H. Lee, "Development of video shooting system and technique enabling detection of micro cracks in the tunnel lining while driving, Journal of the Korean Society of Hazard Mitigation, Vol. 18, No. 5, pp. 217-229, 2018.
  11. X. Wu, Y. Li, M. Gonh, H. Wu and Y. Wu, "Deformation and Stress Law of Surrounding Rock for a Bifurcated Tunnel with a Super-Large Section: A Case Study, Applied Sciences, Vol. 13, No. 23, pp. 12852, 2023.
  12. J. He, Z. Yang and X. Zhang, "Effect of Undercrossing Shield Tunnels Excavation on Existing Rectangular Pipe-Jacking Tunnels, Applied Sciences, Vol. 13, No. 22, pp. 12235, 2023.