Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom

Abstract

Ojačanje ab greda tehnikom povezivanja s predgotovljenom ab pločom U radu se analizira ponašanje AB greda ojačanih predgotovljenim AB pločama pravokutnog i U-presjeka. Provedeno je eksperimentalno istraživanje s ciljem ocjenjivanja učinkovitosti ojačanja predgotovljenim pločama. To je istraživanje popraćeno i 2-D nelinearnom analizom uz primjenu metode konačnih elemenata (NLFEA). Rezultati NLFEA analize su pokazali dobro podudaranje s rezultatima ispitivanja. Smatra se da je predloženi postupak dobra alternativa ojačanju pomoću AB obloga te da je taj postupak praktičan, ekonomičan i pouzdan za zgrade ili mostove s većim brojem jednakih greda. RC beam strengthening using precast RC plate bonding techniqueThe behaviour of RC beams strengthened with precast RC plates of rectangular and U cross-section is studied in the paper. An experimental investigation was conducted to assess effectiveness of strengthening with precast plates. The investigation was supported with the 2-D nonlinear finite element analysis (NLFEA). The NLFEA results showed a good level of correlation with test results. The proposed technique is considered to be a good alternative to RC jacketing and the technique is practical, economical and reliable for buildings or bridges with a greater number sisof similar beams.