Article / članak 11

Bending of concrete columns reinforced with FRP bars

Savijanje betonskih stupova armiranih FRP šipkama

authors / autori
mr. sc. Igor Džajić, prof. dr. sc. Domagoj Damjanović

DOI
https://doi.org/10.5592/CO/PhDSym.2024.11

keywords / ključne riječi
non-metallic reinforcement, Carbon Fibre Reinforced Polymer (CFRP), centrifugallycast poles, prestressing, ultimate load testing, bending testing, circular hollow crosssection
nemetalna armatura, ugljičnim vlaknima armirani polimer, CFRP, centrifugirani stupovi, prednapinjanje, ispitivanje do sloma, ispitivanje na savijanje, šuplji kružni presjek

page range in publication / raspon stanica
105 - 119

publish date / datum publikacije
12/9/2024

abstract / sažetak
Concrete poles for power distribution manufactured by centrifugation and prestressed with fibre-reinforced polymer reinforcement have proven to be efficient and economical in situations of accelerated deterioration of conventional poles in the coastal environment. The lack of standardized calculation procedures for the dimensioning of such elements, the modest base of experimental research, especially when it comes to the use of concrete with a reduced carbon footprint, along with the necessary condition of making a national technical assessment for placing it on the market, make greater commercial use difficult. Evaluating all column types of one manufacturer with different load capacities and heights in the process of attestation of conformity is near impossible and time-consuming procedure and would be replaced by the proposed numerical methods. The topic of paper contributes to the theoretical and experimental research of the described construction product.
Betonski stupovi namijenjeni elektrodistribuciji proizvedeni centrifugiranjem i prednapeti armaturom od vlaknima armiranog polimera imaju praktičnu potvrdu učinkovitosti i ekonomičnosti u situacijama ubrzanog dotrajavanja konvencionalnih stupova u primorskom okolišu. Nepostojanje normiranih računskih postupaka dimenzioniranja ovakvih elemenata, skromna baza eksperimentalnih istraživanja posebice kada je riječ o uporabi betona smanjenog ugljičnog otiska, uz nužan uvjet izrade nacionalne tehničke ocjene stavljanja na tržište, otežavaju veću komercijalnu uporabu. Ispitivanja svih tipova stupova jednog proizvođača različitih nosivosti i visina u postupku potvrđivanja sukladnosti gotovo je nemoguć i dugotrajan postupak i bio bi zamijenjen predloženim numeričkim metodama. Tema ovog rada daje doprinos teorijskom i eksperimentalnom istraživanju opisanog građevnog proizvoda.