- 권한신청
- P-ISSN2233-8292
- E-ISSN2287-4747
- KCI
ISSN : 2233-8292
터널 막장보강효과에 대한 연구
A study of tunnel face reinforcement
김상환 (호서대학교)
Pier Paolo Oreste (Tunneling and Underground Space center)
Sebastiano Pelizza (Tunneling and Underground Space center)
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Abstract
The practice of introducing and grouting reinforced fiber glass pipes or bar into the core to be excavated to maintain stable the tunnel face during excavation has been applied to many tunnels, where difficult geotechnical conditions are present, with good results in terms of safety and speed of works. This reinforcing technique, initially developed to be used jointly with the mechanical precut in clay, has been widely used with other geotechnical conditions as the only type of reinforcement or joined with other ground consolidation and/or reinforcement techniques (i.e. steel pipes or jet-grouting umbrella). At present same numerical researches have been carried out to find which are the real working conditions of the reinforcing elements but no final results have been obtained for the definition of the best design approaches. In this work the results of a three dimensional parametric numerical model is presented.
- keywords
- Tunnel face reinforcement, tunnel face stability, elasto plastic model, strain softening model, fiber glass pipe, Tunnel face reinforcement, tunnel face stability, elasto plastic model, strain softening model, fiber glass pipe
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