This　paper　presents　a　novel　mechanical　model　for　seismic　response　analysis　of　vertical　shafts.　The　model　is　based　on　elastic　foundation　beam　theory　and　simplifies　the　shaft　linings　as　parallel　Euler　Bernoulli　beams.　Their　interaction　is　simulated　using　uniformly　distributed　springs.　The　governing　differential　equation　for　shaft　vibration　is　derived　for　SH　wave　excitation.　The　seismic　input　motion　is　applied　to　the　primary　lining　by　converting　the　free　field　displacement　into　harmonic　form.　The　closed-form　solutions　for　seismic　response　of　both　primary　and　secondary　linings　are　obtained　via　the　transfer　function　method.　The　accuracy　of　analytical　solution　is　validated　by　comparing　with　finite　element　analysis　results.　Additionally,　the　impact　of　foundation　stiffness,　secondary　lining　thickness,　shaft　outer　diameter,　and　relative　stiffness　between　linings　on　seismic　response　are　investigated　in　the　parametric　analysis.　The　analytical　solutions　of　the　seismic　response　analysis　of　vertical　shafts　indicates　that　the　relative　stiffness　between　linings　significantly　affects　the　secondary　lining＇s　peak　bending　moment.　Furthermore,　higher　stiffness　of　the　elastic　connection　layer　between　the　two　linings　can　effectively　reduce　the　peak　displacement　response　of　the　secondary　lining.