A　6　m　span　Levy　rigid　bracing　dome　(LRBD)　model　was　tested　for　studying　the　static　mechanical　properties　of　the　system.　Three　test　cases　were　considered　in　this　experiment,　namely,　only　initial　prestress,　full-span　load,　and　half-span　load.　With　increasing　load,　the　variation　of　internal　force　and　nodal　displacement　of　LRBD　were　obtained.　The　conclusions　obtained　are　as　follows:　under　full-span　load,　the　internal　force　of　the　hook　rod,　bracing　rod　and　slanting　rod　are　increased,　but　the　internal　force　of　the　ridge　cable　is　decreases　with　increasing　load;　under　half-span　load,　the　internal　force　of　the　LRBD　changes　smoothly　with　increasing　load,　and　the　change　of　the　internal　force　of　the　LRBD　on　the　load　side　are　similar　to　that　of　the　LRBD　under　full-span　load.　However,　the　variation　of　the　internal　force　of　the　LRBD　under　half-span　load　is　larger　than　that　under　full-span　load.　It　is　shown　that　the　LRBD　under　half-span　load　are　more　sensitive　to　the　load　change.　Under　half-span　load,　the　variation　of　the　internal　force　of　LRBD　is　complex.　The　internal　force　of　the　ridge　cable　decreases　with　load　increasing.　The　internal　forces　of　the　bracing　rod,　hook　cable,　internal　slanting　rod　and　mid　slanting　rod　decrease　with　increasing　load,　but　the　internal　force　of　the　outside　slanting　rod　is　basically　unchanged.　The　vertical　displacements　of　the　nodes　caused　by　half-span　load　are　larger　than　those　caused　by　full-span　load.　The　displacement　of　the　whole　structure　is　smaller　and　the　vertical　rigidity　of　the　LRBD　is　large.　It　is　proved　that　it　is　feasible　to　replace　the　cables　in　the　lower　layer　of　cable　dome　with　steel　tie　rods,　which　can　provide　some　references　for　engineering　application.　©　2020,　Editorial　Office　of　Journal　of　Building　Structures.　All　right　reserved.