The　fault　dislocation　causes　the　rupture　of　the　overlying　soil　on　the　site,　resulting　in　enormous　damage　to　the　underground　pipeline　structures　across　the　overlying　soil.　Through　the　researches　on　the　longitudinal　response　of　the　pipeline　structures　of　the　overlying　soil　layer　under　the　fault　dislocation,　the　Pasternak　double-parameter　model　is　introduced　so　as　to　take　the　nonlinear　interaction　between　the　pipeline　and　the　foundation　into　consideration,　and　an　analytical　solution　for　the　longitudinal　response　of　the　pipeline　structures　is　derived　using　the　complementary　error　function.　The　calculated　results　of　analytical　solution　are　consistent　with　those　of　the　model　tests　and　numerical　simulations,　which　proves　the　correctness　of　the　analytical　solution.　Through　the　parameter　sensitivity　analysis,　the　influences　of　the　shear　stiffness　of　the　elastic　layer,　the　coefficient　of　subgrade　reaction　and　the　fault　dip　on　the　longitudinal　response　of　the　underground　pipeline　structures　are　discussed.　The　research　results　show　that　the　longitudinal　response　of　the　pipeline　structures　under　fault　dislocation　based　on　the　two-parameter　Pasternak　foundation　model　is　more　accurate　than　that　of　the　Winkler　foundation　model.　The　shear　stiffness　and　reaction　coefficient　of　the　subgrade　will　change　the　maximum　bending　moment　and　shear　force　of　the　underground　pipeline　structures.　In　contrast,　the　coefficient　of　subgrade　reaction　and　fault　dip　will　change　the　influence　area　and　the　maximum　value　of　the　bending　moment　and　shear　force.　In　the　influence　area,　the　bending　moment　and　shear　force　of　the　pipeline　structures　are　several　times　higher　than　those　in　other　locations,　and　the　structures　are　prone　to　shear　failure,　which　is　the　main　disaster　occurrence　area.　©　2022　Chinese　Society　of　Civil　Engineering.　All　rights　reserved.