To　improve　the　durability　and　crack　resistance　of　shield　tunnel　segments,　glass　fiber-reinforced　polymer　(GFRP)　bars　reinforced　engineered　geopolymer　composite　(EGC)　segments,　referred　to　as　EGC-FRP　segments,　were　introduced　as　a　replacement　for　conventional　steel　reinforced　concrete　segments.　Experimental　study　on　flexural　properties　of　EGC-FRP　segments　was　conducted.　Effects　of　EGC　and　reinforcement　ratio　were　analyzed.　In　addition,　a　numerical　investigation　of　EGC-FRP　segments　based　on　finite　element　(FE)　analysis　was　performed.　The　results　showed　that　EGC　has　more　cracks　and　a　smaller　crack　width　than　concrete　under　tensile　load　and　has　residual　strength　after　cracking　due　to　the　fibers　in　it,　which　leads　to　strong　synergistic　loading　ability　between　EGC　and　GFRP　bars.　The　maximum　crack　width　of　the　EGC-FRP　segment　is　reduced　by　66.11%　under　the　same　reinforcement　ratio.　Meanwhile,　EGC　segments　exhibited　higher　flexural　strength,　deflection,　and　post-cracking　stiffness　than　those　of　the　concrete　segment.　In　particular,　the　ultimate　flexural　strength　is　increased　by　96.44%　compared　to　that　of　the　concrete　segment.　A　FE　model　developed　based　on　the　experimental　results　showed　a　good　correlation　with　the　test　data.　The　model　was　used　to　analyze　the　flexural　behavior　of　EGC-FRP　segments　with　different　reinforcement　ratios.　Finally,　calculation　methods　for　the　flexural　strength　and　deflection　of　EGC-FRP　segments　were　proposed.　©　2025　Elsevier　Ltd