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چکیده
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In recent years, the development and frequency of seismic damage underground structures, seismic analysis and design of underground structures has been more and more attention. Especially in large-Osaka Kobe earthquake in 1995, some subway stations and tunnels were severe injury, the first about the damage caused by the earthquake is the modern amenities underground. After this, the scientists examined the underground seismic and thereby causes damage theory based analysis and design methods to be carried out. The purpose of this research is analytic closed-form solutions with plaxis software for the axial force and moments in a deformation folding cover circular tunnel under the intersection of excitation seismic slip, the uncertainties and effects of various parameters on their results. As well as case studies and parametric and comparing the results of studies.
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