Naslov
Meso Scale Model for Fiber-Reinforced-Concrete : Microplane Based Approach

Autori
Smolčić, Željko ; Ožbolt, Joško

Izvornik
Computers and Concrete (1598-8198) 17 (2017), 4; 375-385

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
concrete ; steel fibers ; 3D finite element analysis ; meso-scale ; microplane model ; bond-slip

Sažetak
In the present paper experimental and numerical analysis of hook-ended steel fiber reinforced concrete is carried out. The experimental tests are performed on notched beams loaded in 3- point bending using fiber volume fractions up to 1.5 %. The numerical analysis of fiber reinforced concrete beams is performed at meso scale. The concrete is discretized with 3D solid finite elements and microplane model is used as a constitutive law. The fibers are modelled by randomly generated 1D truss finite elements, which are connected with concrete matrix by discrete bond-slip relationship. It is demonstrated that the presented approach, which is based on the modelling of concrete matrix using microplane model, able to realistically replicate experimental results. In all investigated cases failure is due to the pull-out of fibers. It is shown that with increase of volume content of fibers the effective bond strength and slip capacity of fibers decreases.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo

POVEZANOST RADA