Based　on　assembly　voided　slab　bridges　with　hinged　joints,　a　full-scale　model　of　an　assembly　voided　slab　bridge　with　the　span　of　8m　is　designed　and　made.　The　failure　modes　of　a　hinged　joint　under　vehicle　loads　are　discussed,　such　as　the　failure　type,　failure　position　and　cracking　load.　The　results　show　that　the　bottom　of　the　hinged　joint　cracks　along　the　interface　between　a　voided　slab　and　a　hinged　joint　subjected　to　the　action　of　bending　tensile　stress　under　a　middle　load.　The　cracking　load　is　70kN　(1.0　times　of　a　vehicle　load),　and　the　crack　extend　to　the　top　of　an　interface　at　140kN　(2.0　times　of　a　vehicle　load).　In　order　to　ensure　the　mechanical　behaviors　of　a　hinged　joint　to　be　consistent　with　or　close　to　that　of　a　voided　slab,　some　construction　measures　are　suggested　to　delay　the　crack　of　the　interface　between　a　voided　slab　and　a　hinged　joint　extending　from　the　bottom　to　the　top　of　a　slab.