Simplified　analytical　solutions　are　very　useful　tools　for　the　seismic　preliminary　design　of　tunnels　and　can　quickly　and　easily　give　seismic　responses　to　structures.　This　study　presents　simplified　analytical　solutions　for　the　stress　and　deformation　of　circular　composite-lined　tunnels　subjected　to　in-plane　S-waves.　Unlike　previous　solutions　for　single-lined　tunnels,　the　proposed　analytical　solutions　are　suitable　for　tunnels　with　arbitrary　numbers　of　linings.　Moreover,　tunnel　linings　are　treated　as　multilayer　thick-walled　cylinders　in　the　new　solutions.　Compared　with　thin　shell　or　beam　models　used　in　previous　analytical　solutions,　thick-walled　cylinders　provide　more　precise　forecasts.　In　addition,　the　slippage　effect　at　the　lining-lining　and　ground-lining　interface　is　considered　by　introducing　a　spring-type　flexibility　coefficient　into　the　interaction　force-displacement　relationship.　To　verify　the　proposed　analytical　solutions,　dynamic　numerical　examples　are　studied.　The　proposed　solutions　have　good　agreement　with　the　dynamic　numerical　results　and　outperform　previous　analytical　solutions.　Finally,　parameter　studies　are　conducted　to　investigate　the　effect　of　the　flexibility　coefficient,　degraded　zone　around　the　outermost　lining　and　steel　plate　supporting　the　innermost　lining　on　the　seismically　induced　stresses　and　deformations.　The　proposed　analytical　solutions　are　applicable　for　approximately　evaluating　the　seismic　responses　of　circular　tunnels　with　composite　linings.