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http://dx.doi.org/10.9711/KTAJ.2011.13.5.413

Dynamic behavior analysis of tunnel structure under gas explosion load  

Kim, Young-Min (전주대학교 토목환경공학과)
Publication Information
Journal of Korean Tunnelling and Underground Space Association / v.13, no.5, 2011 , pp. 413-430 More about this Journal
Abstract
Consideration on the explosion resistant design of infrastructure has increased in the recent years. The explosion load is caused by gas explosion or bomb blast. In this study an analytical model is developed, whereby the tunnel structure is divided in several elements that are schematized as single degree of freedom mass-spring-dashpot systems on gas explosion. Using this simple model a sensitivity analysis has been carried out on tunnel structure design parameters such as explosive peak pressure, duration of the load, thickness of structure, burial depth. Finite element method was used to investigate the dynamic response and plastic zone of a tunnel under gas explosion. And it was found from the comparison of the analysis results that there are slight differences in the response of the intermediate wall between the single degree of freedom mass-spring-dashpot model and FEM.
Keywords
Tunnel structure; explosion load; finite element method; dynamic analysis; plastic zone;
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Times Cited By KSCI : 3  (Citation Analysis)
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