In　this　paper,　the　stress　analysis　of　the　most　critical　beam-arch　joint　of　Yuehu　Bridge　is　conducted,　despite　the　variation　in　the　specific　structure　of　each　tied　arch　bridge.　To　achieve　this,　two　specimens　with　different　scale　ratios　were　designed.　The　smaller　specimen　was　used　to　consider　the　effect　of　bridge　deck　and　loading　to　failure.　The　experimental　results　indicate　that　both　specimens　did　not　exhibit　significant　deformation　under　the　design　load,　and　the　measuring　point＇s　stress　was　located　in　the　elastic　section.　This　implies　that　the　original　bridge　structure　design　is　rational.　However,　the　arch　rib　steel　plate　of　the　1/8　scale　specimen　buckled　when　subjected　to　1.8　times　the　design　load.　To　validate　the　experimental　results,　a　finite　element　model　that　considers　the　elastoplastic　behavior　of　the　material　was　established　and　compared　with　the　experimental　results.　The　comparison　shows　that　the　finite　element　model　can　predict　the　mechanical　behavior　of　the　structure　effectively,　thus　confirming　the　rationality　of　the　structure　design.　Additionally,　the　study　also　analyzed　the　buckling　problem　of　tied　arch　bridges,　which　is　another　critical　issue.　The　in-plane　and　out-of-plane　buckling　of　fixed　and　hinged　parabolic　arches　under　uniform　axial　compression　were　investigated.　The　results　demonstrate　that　the　boundary　conditions,　rise-span　ratio,　and　bridge　deck　width　significantly　affect　the　buckling　performance.　Overall,　this　study　provides　essential　insights　into　the　stress　and　buckling　behavior　of　tied　arch　bridges,　which　can　guide　the　design　and　construction　of　such　structures　in　the　future.