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Title |
A Study on Seismic Performance Evaluation of Road Tunnel according to Seismic Analysis Conditions
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Authors |
최병일(Byoung-Il Choi) ; 김찬희(Chan-Hee Kim) ; 노은철(Eun-Cheol Noh) ; 하명호(Myung-Ho Ha) ; 박시현(Si-Hyun Park) |
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DOI |
https://doi.org/10.11112/jksmi.2021.25.5.127 |
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Abstract |
When constructing a tunnel on a stable ground, stress is changed in the ground during excavation stage and installation of ground support materials. In the standards for safety evaluation of structures in use, it is suggested to perform numerical analysis reflecting the excavation stage. But method of seismic performance evaluation was not presented. Therefore, in this study, numerical analysis was performed with different analysis methods, and the results were compared and analyzed. As a result of the numerical analysis, seismic wave applied in the horizontal direction were no difference depending on the analysis methods. However, there was a big difference in the result according to the evaluation methods of tunnel member forces. When reviewing with the strength design method, the structure performance could be not satisfied depending on the existence or nonexistence of reinforcing bars. Based on these research results, it is suggested that the interpretation method should be clearly presented and reflected in the relevant standards.
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