초록

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Abstract ▼ AI-Helper

Fire in a tunnel may cause the devastating damage to the structure, and indirect economical loss due to closure of tunnel as well as direct loss like the further expense of repair and reinforcement. Thus, concrete lining in the shield tunnel must be secured the fire safety. Recently, hybrid fiber is...

Fire in a tunnel may cause the devastating damage to the structure, and indirect economical loss due to closure of tunnel as well as direct loss like the further expense of repair and reinforcement. Thus, concrete lining in the shield tunnel must be secured the fire safety. Recently, hybrid fiber is developed to be used for concrete tunnel lining, which could satisfy the fire resistance performance. In this study, tests for the fire resistance of normal and hybrid fiber reinforced concrete shield tunnel lining were performed with full scale models to assess its fire safety. As a result, it was found that the concrete shield lining with hybrid fiber imposed the higher fire resistance than normal lining, arising from the good performance in temperature distribution, explosive spalling, residual compressive strength.

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