In　view　of　the　weakest　point　of　hinged　voided　slab　bridge,　namely　hinged　joint,　a　kind　of　voided　slab　with　perforated　steel　plates　at　the　bottom　of　hinged　joint-to-voided　slab　interface　was　put　forward,　the　perforated　steel　plates　were　used　to　change　the　crack　propagating　path　at　the　interface,　so　as　to　delay　the　formation　of　through　crack　at　the　hinged　joint-to-voided　slab　interface,　and　the　full-scale　model　experiment　on　8　m-span　hinged　voided　slab　was　conducted.　Based　on　the　experiment　and　nonlinear　finite　element　(FE)　analysis,　the　result　was　compared　with　the　experiment　result　of　hinged　voided　slab　with　gate-type　steel　bars　at　the　bottom　of　interface.　Analysis　result　shows　that　when　the　experiment　load　is　100　kN　(1.43　times　vehicle　load),　the　lateral　crack　emerges　in　the　mid-span　of　voided　slab,　the　integral　rigidity　of　voided　slab　decreases,　and　the　stress　state　of　voided　slab　comes　into　elastoplastic　stage　from　elastic　stage.　The　test　load　is　applied　up　to　300　kN　(4.29　times　vehicle　load),　no　crack　is　detected　at　the　bottom　of　hinged　joint-to-voided　slab　interface　during　the　entire　loading　process.　For　hinged　voided　slab　with　gate-type　steel　bars　at　the　bottom　of　hinged　joint-to-voided　slab　interface,　the　crack　extends　from　the　bottom　to　the　top　along　the　interface,　and　then　forms　a　through　crack.　However,　for　the　hinged　joint-to-voided　slab　interface　with　perforated　steel　plates,　after　the　crack　propagates　along　the　interface　to　the　bottom　of　perforated　steel　plate,　the　expansion　of　the　crack　needs　to　bypass　the　perforated　steel　plate,　so　that　the　joint　concrete　below　the　perforated　steel　plate　cracks,　and　then　the　crack　expands　upward　along　the　junction　surface　above　the　perforated　steel　plate　until　the　formation　of　through　crack.　The　joint　cracking　load　increases　from　69　kN　(0.99　times　vehicle　load)　for　the　interface　with　gate-type　steel　bars　to　314　kN　(4.49　times　vehicle　load),　and　increases　by　3.50　times.　The　through-crack-formation　load　increases　from　199　kN　(2.84　times　vehicle　load)　for　the　junction　surface　with　gate-type　steel　bars　to　489　kN　(6.99　times　vehicle　load),　and　increases　by　4.51　times.　It　can　be　seen　that　the　extension　path　of　crack　changes　after　the　perforated　steel　plate　is　set　at　the　bottom　of　junction　surface,　which　slows　down　the　cracking　of　the　junction　surface　between　the　voided　slab　and　the　hinged　joint.　2　tabs,　22　figs,　25　refs.　©　2017,　Editorial　Department　of　Journal　of　Traffic　and　Transportation　Engineering.　All　right　reserved.