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双连拱隧道作为一种特殊的隧道结构形式,在高烈度地震区,需要根据实际地质情况采用相应的抗减震措施。本文采用数值模拟技术,结合高烈度地震区某双连拱隧道抗减震技术研究,比较注浆加固和设置减震层两种减震措施对双连拱隧道的地震动力响应的影响,分析总结了注浆加固厚度变化和减震层材料属性变化对双连拱隧道地震动力响应的影响规律,从而为高烈度地震区双连拱隧道采用具体的减震措施和减震优化提供参考依据。
Double-arch tunnel as a special form of tunnel structure, in high intensity seismic area, the need to use the appropriate anti-seismic measures according to the actual geological conditions. In this paper, the numerical simulation technology, combined with anti-seismic technology of a double-arch tunnel in high-intensity earthquake area, the effect of two kinds of shock absorption measures of grouting reinforcement and damping layer on the seismic response of double-arch tunnel is analyzed. The effect of thickness variation of grouting reinforcement and material property change of double-arch tunnel on the dynamic response of the double-arch tunnel are investigated. It provides a reference for the concrete double-arch tunnel in the high-intensity earthquake area to adopt specific damping measures and damping optimization.