V příspěvku je řešen staticky neurčitý nosník v pružno-plastickém stavu. Vnitřní síly spojitého nosníku v pružnoplastickém stavu jsou řešeny třímomentovou rovnicí a průhyb principem virtuálních prací
The paper briefly discusses general approach to the solution of the statically indeterminate structuresin elasto-plastic state. A three-span continuous beam was used as an example of the statically indeterminate structures. Internal forces of the beam were solved by the three moments method and deflection was determined by virtual work method (en)