PSI - Issue 59

Petro Gomon et al. / Procedia Structural Integrity 59 (2024) 551–558 P. Gomon et al. / Structural Integrity Procedia 00 (2019) 000 – 000

555 5

M' 0.75M' 0.5M' 0.25M' M=0

beam height [mm]

U d ∙10

-4

Fig. 5. Deformation development along the height of the section of the GRB-12 (Prst) beam during unloading after fixing the tape.

Subsequently, the beam was flipped into the working position, where the main test took place, bringing it to the loss of load-bearing capacity. Thus, the beam had an initial deflection w 0 = 4.7 mm. The graph of the development of relative deformations within the height of the calculated cross-section of sample B-1 with combined reinforcement and pre-stressing from the beginning of loading to failure is shown in Fig. 6.

M=0 0,25М max 0.5Mmax 0.75Mmax 0.98М max

beam height [mm]

U d ∙10

-4

Fig. 6. Deformation development graph along the height of the section of the GRB-12 (Prst) beam with pre-stressed composite reinforcement during loading from 0 to М max .