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2016 Vol.18, Issue 1 Preview Page
Friction behaviour of inflatable structure system to protect rapidly flooding damages in subsea tunnel

해저터널 급속차폐를 위한 팽창구조체의 마찰거동에 대한 연구

Kwang-San Yoo1
,
Ji-Hyun Lee2
,
Yeon-Deok Kim2
,
Sang-Hwan Kim3*
유 광산1
,
이 지현2
,
김 연덕2
,
김 상환3*
1Yookwang Construction Co., Ltd., President
2Dept of Civil Engineering, Hoseo University, Graduate student
Dept of Civil Engineering, Hoseo University, Professor
1유광건설 사장
2호서대학교 토목공학과 석사과정
호서대학교 토목공학과 교수
*교신저자. *Corresponding Author. 
31 January 2016. pp. 109-117
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Abstract

This paper is focused on the determination of friction parameter which is a predominant factor in the design of inflatable structure system. This inflatable structure system is very valuably used to protect passively and rapidly the possibilities of tunnel damages by flooding threats and unusual leakage to be occurred during and after underground infrastructure construction. In particular, this system should be necessary in subsea tunnel. This study presents the experimental results obtained from the relative friction characteristics tests of the fabric materials that constitute the inflatable structure. In order to evaluate the relative friction behaviour of the inflatable structure system, friction tests and scaled model tunnel friction tests are carried out. The friction tests are carried out to determine the friction coefficient for different surface conditions between tunnel and inflatable structure. These friction coefficients are then evaluated and compared with the result obtained from the model tunnel friction tests. Interaction behaviours between tunnel and system are also reviewed and described in this study. The results clearly show that the friction coefficients derived from scaled model slippage tests are about 12% lower than values obtained from the friction tests. In addition, this study will be necessary to verify the real friction behaviour with prototype tests before applying in practice.

Keywords
Inflatable structure system
Subsea tunnel
Friction test
Scaled model Slippage test

본 연구는 팽창구조체 설계에서 중요한 인자인 마찰계수의 결정에 대하여 중점을 두었다. 팽창구조체는 지중 구조물 의 시공 및 운영 시 발생되는 돌발용수 및 이상누수에 의한 사고들에 대비한 많은 가치가 있는 수동적 급속차폐시스템이다. 특히 해저터널에 있어서는 필수적이라고 할 수 있다. 본 연구는 팽창구조체를 구성하는 섬유재료의 상대적인 마찰거동에 대한 결과를 제시하였다. 이러한 마찰거동을 평가하기 위하여 마찰실험과 모형터널마찰실험을 실시하였다. 마찰시험으로부터 서로 다른 표면 조건에서 마찰계수를 결정하였으며, 이 결과로 얻어진 마찰계수는 실질적인 모형 미끄럼시험 결과를 통하여 분석 비교하였다. 이 들 결과로부터 터널과 팽창구조체 상호 마찰거동에 대하여 검토하였다. 이 연구 결과로부터 모형터널마찰실험으로부터 얻어진 마찰계수 값은 실내 마찰시험으로부터 얻은 마찰계수 값보다 약 12%작게 나타났다.

키워드
팽창구조체
해저터널
마찰 실험
모형터널마찰시험
References
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Information
  • Publisher :Korean Tunneling and Underground Space Association
  • Publisher(Ko) :한국터널지하공간학회
  • Journal Title :Journal of Korean Tunnelling and Underground Space Association
  • Journal Title(Ko) :한국터널지하공간학회 논문집
  • Volume : 18
  • No :1
  • Pages :109-117
  • Received Date : 2015-01-18
  • Revised Date : 2016-01-26
  • Accepted Date : 2016-01-28
  • DOI :https://doi.org/10.9711/KTAJ.2016.18.1.109
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