Fracture of reinforced concrete beams subjected to three point bending
Апстракт
The present paper investigates deformation of three point bent reinforced concrete (RC) beams analytically (using fracture mechanics), computationally (using finite element method) and experimentally. As the applied force increases the crack is initially trapped by the reinforcement. The debonding of the reinforcement is attributed to the horizontal crack. Simultaneously, the vertical crack propagates driven by the externally applied force. The reinforcement behaves as clasto-plastic spring that decreases the stress intensity factor. The developed analytic model provides estimates of the collapse load, crack length and crack opening displacement. The ultimate loading is estimated by the numerical smeared crack model, incorporated in nonlinear finite element code DIANA. Experimental measurements are used to verify theoretically and numerically obtained results. Special attention is focused on the determination of vertical crack size using graphite and optical fibers.
Кључне речи:
beam fracture / experiment / optical fiber / graphite fiber / FEM-analysisИзвор:
International Journal of Damage Mechanics, 2003, 12, 1, 31-44Институција/група
GraFarTY - JOUR AU - Šumarac, Dragoslav AU - Sekulović, M AU - Krajčinović, Dušan PY - 2003 UR - https://grafar.grf.bg.ac.rs/handle/123456789/50 AB - The present paper investigates deformation of three point bent reinforced concrete (RC) beams analytically (using fracture mechanics), computationally (using finite element method) and experimentally. As the applied force increases the crack is initially trapped by the reinforcement. The debonding of the reinforcement is attributed to the horizontal crack. Simultaneously, the vertical crack propagates driven by the externally applied force. The reinforcement behaves as clasto-plastic spring that decreases the stress intensity factor. The developed analytic model provides estimates of the collapse load, crack length and crack opening displacement. The ultimate loading is estimated by the numerical smeared crack model, incorporated in nonlinear finite element code DIANA. Experimental measurements are used to verify theoretically and numerically obtained results. Special attention is focused on the determination of vertical crack size using graphite and optical fibers. T2 - International Journal of Damage Mechanics T1 - Fracture of reinforced concrete beams subjected to three point bending EP - 44 IS - 1 SP - 31 VL - 12 DO - 10.1177/105678903031982 ER -
@article{ author = "Šumarac, Dragoslav and Sekulović, M and Krajčinović, Dušan", year = "2003", abstract = "The present paper investigates deformation of three point bent reinforced concrete (RC) beams analytically (using fracture mechanics), computationally (using finite element method) and experimentally. As the applied force increases the crack is initially trapped by the reinforcement. The debonding of the reinforcement is attributed to the horizontal crack. Simultaneously, the vertical crack propagates driven by the externally applied force. The reinforcement behaves as clasto-plastic spring that decreases the stress intensity factor. The developed analytic model provides estimates of the collapse load, crack length and crack opening displacement. The ultimate loading is estimated by the numerical smeared crack model, incorporated in nonlinear finite element code DIANA. Experimental measurements are used to verify theoretically and numerically obtained results. Special attention is focused on the determination of vertical crack size using graphite and optical fibers.", journal = "International Journal of Damage Mechanics", title = "Fracture of reinforced concrete beams subjected to three point bending", pages = "44-31", number = "1", volume = "12", doi = "10.1177/105678903031982" }
Šumarac, D., Sekulović, M.,& Krajčinović, D.. (2003). Fracture of reinforced concrete beams subjected to three point bending. in International Journal of Damage Mechanics, 12(1), 31-44. https://doi.org/10.1177/105678903031982
Šumarac D, Sekulović M, Krajčinović D. Fracture of reinforced concrete beams subjected to three point bending. in International Journal of Damage Mechanics. 2003;12(1):31-44. doi:10.1177/105678903031982 .
Šumarac, Dragoslav, Sekulović, M, Krajčinović, Dušan, "Fracture of reinforced concrete beams subjected to three point bending" in International Journal of Damage Mechanics, 12, no. 1 (2003):31-44, https://doi.org/10.1177/105678903031982 . .