Punching strength of flat slabs with and without shear reinforcement

Nosivost na posmicni proboj iznimno je važan parametar pri projektiranju ravnih ploca, odnosno ploca oslonjenih neposredno na stupove, bez greda između stupova. Prikazani su proracunski modeli proboja ploca prema Eurokodu 2, ACI Codu 318 i fib Model Codu 2010. Opisana su provedena vlastita eksperimentalna istraživanja proboja ploca s posmicnom armaturom i bez nje te su dobiveni rezultati uspoređeni s predviđanjima spomenutih proracunskih modela. Uoceno je da svi proracunski modeli podcjenjuju eksperimentalno dobivenu nosivost na proboj u slucaju ploca bez posmicne armature. Kod ploca s posmicnom armaturom, uoceno je precjenjivanje nosivosti na proboj prema proracunskom modelu Eurokod 2.

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