To　investigate　the　effect　of　construction　disturbance　on　vertical　vibration　characteristics　of　pipe　pile,　a　simplified　mechanical　model　of　vertical　vibration　for　pipe　pile　embedded　in　radially　inhomogeneous　soil　was　proposed　by　employing　the　viscous　damping　model　and　considering　pipe　pile　as　uniform　cross-section　and　elasticity　based　on　the　plane　stain　model　of　annular　complex　stiffness　transfer.　Firstly,　based　on　Laplace　and　complex　stiffness　transfer　method,　the　composite　stiffness　of　pile-soil　interface　was　derived.　Secondly,　the　frequency　domain　analytical　solution　of　pile　head　dynamic　impedance　was　obtained　by　using　the　compatibility　condition.　Finally,　effects　of　the　slenderness　ratio　of　pile,　the　inner　and　outer　diameters　of　pile,　the　elastic　modulus　of　pile,　the　viscous　coefficient　of　soil,　and　the　construction　disturbance　intensity　and　range　on　the　complex　impedance　at　the　pile　head　were　analyzed.　The　results　showed　that　the　amplitude　and　resonance　frequency　of　complex　impedance　at　the　pile　head　decreased　with　the　increase　of　slenderness　ratio　of　pile;　the　inner　soil　attenuated　vertical　vibration　of　pipe　pile　to　a　certain　extent;　the　more　the　softening　(hardening)　intensity　of　the　surrounding　soil　was,　the　lower　(higher)　the　amplitude　of　complex　impedance　became;　the　amplitude　of　complex　impedance　at　the　pile　head　increased　(decreased)　with　the　enlargement　of　softening　(hardening)　range　due　to　construction　disturbance.　It　is　suggested　that　the　radial　inhomogeneity　should　be　considered　in　the　analysis　of　vertical　vibration　for　pipe　pile　when　the　construction　disturbance　is　distinct.　©　2019,　Editorial　Board　of　Journal　of　Harbin　Institute　of　Technology.　All　right　reserved.