Owing　to　the　requirements　of　shield　machine　posture　adjusting　and　direction　changing　in　curved　tunnel,　the　hydraulic　cylinders　of　the　thrust　system　are　diverged　from　the　axes　of　the　segments,　which　will　make　the　segments　in　an　unfavorable　loading　state.　In　this　paper,　combined　with　the　construction　characteristics　of　large　diameter　shield　tunnel　with　small　radius　curve　in　the　intercity　rail　transit　engineering　from　Zhuhai　urban　to　Zhuhai　Airport　and　based　on　the　practical　engineering　condition　and　tunneling　parameter　recordings,　a　3-D　space　finite　element　model　was　set　up　for　the　shield　tunnel　during　construction　stage.　Further,　numerical　simulations　were　carried　out　according　to　different　working　conditions,　and　the　force　and　deformation　of　the　segments　were　analyzed　and　given.　Also,　through　parametric　analysis,　the　influences　of　several　factors,　such　as　curve　radius　and　magnitude,　direction,　and　deviation　of　the　jacks,　on　the　force　and　deformation　of　the　segments　during　shield　construction　stage,　were　studied.　The　results　show　that　the　lateral　deformation　of　the　segment　in　curved　tunnel　is　significantly　greater　than　that　in　straight　line　section;　when　the　magnitude　of　the　jack　thrust　is　changed　from　small　to　large,　the　position　of　maximum　lateral　deformation　(MLD)　of　the　segment　in　curved　tunnel　is　gradually　transitioned　from　the　inside　to　the　outside　of　the　curve;　and　as　the　magnitude　of　the　jacks　increases,　MLD　of　the　segment　decreases　but　the　minimum　principal　stress　increases　with　the　increase　of　jack　pressure　difference　and　obliquity.　©　2019　American　Society　of　Civil　Engineers.