• 제목/요약/키워드: 쉴드터널

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Applicability estimation for cable assembling method of shield tunnel using field test construction (현장 조립 시험시공을 통한 쉴드터널 강연선 체결 기술의 적용성 평가)

  • Kim, Dong-Min;Ma, Sang-Joon;Lee, Young-Sub
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.17 no.1
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    • pp.11-23
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    • 2015
  • In this study, the new segment assembling method using cable tensible force was developed to improve the problem of bolt assembling method of shield tunnel. In the field test construction, cable assembling method reduced the assembling time of segment in comparison with bolt assembling method because of guide role of segment shear-key. In the result of measuring the necessary time for segment assembling process, it took 420sec to assemble one segment in bolt method and 400sec to assemble one segment in cable method, but in case of using the cable automatic feeder, it could reduce the necessary time as 60sec in comparison with bolt assembling method. The cable automatic system modeling using BIM, that connected shield TBM also will be utilized in the area of design TBM, excavation plan, method process understanding, construction management and so on.

A study on the factors influencing the segment lining design solved by beam-spring model in the shield tunnel (쉴드 터널 세그먼트 라이닝 설계에서 빔-스프링 구조 모델이 단면력에 미치는 영향)

  • Kim, Hong-moon;Kim, Hyun-su;Shim, Kyung-mi;Ahn, Sung-youll
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.19 no.2
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    • pp.179-194
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    • 2017
  • The segment lining design for shield tunnel is generally carried out by using the beam-spring model and the induced member forces from the model are strongly influenced by the components of the model such as imposed load, coefficient of subgrade reaction, location of segment joint and its stiffness. The structural models and stiffness of its connection part found used in abroad design cases is usually obtained as it is for the domestic design of segment of shield tunnel. Those models and stiffness in existing design cases are conventionally applied to a new tunnel design without any suitability review for the project. In this study, the application method of base components of the model such as the coefficient of subgrade reaction and modelling method to the segment lining design was suggested by carrying out the comparative study of the base elements for the member forces estimation of segment lining of shield tunnel.

Risk management applicable to shield TBM tunnel: II. Risk analysis methodology (쉴드 TBM 터널에 적용 가능한 리스크 관리: II. 리스크 분석 방법)

  • Hyun, Ki-Chang;Min, Sang-Yoon;Moon, Joon-Bai;Jeong, Gyeong-Hwan;Lee, In-Mo
    • Journal of Korean Tunnelling and Underground Space Association
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    • v.14 no.6
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    • pp.683-697
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    • 2012
  • In this paper, a risk analysis methodology applicable to shield TBM tunnels was studied. Fault Tree Analysis (FTA) was utilized to identify all risk items and to calculate the probability of failure of each item and Analytic Hierarchy Process (AHP) was used to obtain the impact of each risk item. Finally, a risk level of each risk item can be assessed. Developed methodology is applied to a Seoul subway site in which EPB shield tunnel method was utilized and it was found that risk analysis results matched reasonably well with field data.