International Scholarly Research Notices

Research Article

Behavior and Analysis of Self-Consolidated Reinforced Concrete Deep Beams Strengthened in Shear

Table 4

Experimental test program of strengthened RSCC deep beams [31].
GroupSpecimen codeDimensions of applied material (mm)Shear strengthening method
BR—Reference RSCC beam without openings was loaded up to failure, Pf without strengthening.
Reference beamsBOR—Reference beam with a central opening was loaded up to failure, Pf without strengthening (Figure 1).
BOVSBSteel bars, 𝜙 6 , 𝐿 = 4 0 0 Anchorage = 20 mmStrengthened by NSM vertical steel bars in both sides of the beam (Figure 2(a)).
BOVSP=Steel plates, 4 0 0 × 1 0 × 1 Strengthened by NSM vertical steel strips parallel to the surface in both sides of the beam (Figure 2(a)).
B O V S P ‖ Steel plates 4 0 0 × 1 0 × 1 Strengthened by NSM vertical steel strips transverse to the surface in both sides of the beam (Figure 2(a)).
Group (A) strengthening by steel B O V S P ‖ 3 Steel plates 4 0 0 × 1 0 × 3 Strengthened by NSM vertical steel strips transverse to the surface in both sides of the beam (Figure 2(a)).
BOISBSteel bars 𝜙 6 , 𝐿 = 1 5 0 Strengthened by NSM inclined steel bars in both sides of the beam (Figure 2(b)).
BOSPLSteel plates 4 0 0 × 3 0 0 × 1 Strengthened by externally bonded steel plates by epoxy in both sides of the beam (Figure 3(a)).
BOVG1GFRP rods, 𝜙 6 , 𝐿 = 4 0 0 Anchorage = 20Strengthened by NSM vertical intertwined rods manufactured from GFRP roving and epoxy in both sides of the beam (Figure 2(a)) with an anchorage length equals 20 mm through the web.
BOVG2GFRP rods, 𝜙 6 , 𝐿 = 4 0 0 Anchorage = 100Strengthened by NSM vertical intertwined rods manufactured from GFRP roving and epoxy in both sides of the beam (Figure 2(a)) with an anchorage length equals 100 mm through the web.
Group (B) strengthened by GFRPBOIG1GFRP rods, 𝜙 6 , 𝐿 = 1 5 0 Anchorage = 20Strengthened by NSM inclined intertwined rods manufactured from GFRP roving and epoxy in both sides of the beam (Figure 2(b)) with anchorage length equals 20 mm through the web.
BOIG2GFRP rods, 𝜙 6 , 𝐿 = 1 5 0 Anchorage = 100Strengthened by NSM inclined intertwined rods manufactured from GFRP roving and epoxy in both sides of the beam (Figure 2(b)) with anchorage length equals 100 mm through the web.
BOGWGFRP wraps, 4 0 0 × 3 0 0 × 1 . 7 Strengthened with one layer of externally bonded GFRP woven wraps by epoxy in both sides of the beam (Figure 3(b)).
Group (C) Strengthened by CFRPBOVC=CFRP plates 4 0 0 × 1 0 × 1 . 2 Strengthened by NSM vertical CFRP strips parallel to the surface in both sides of the beam (Figure 2(a)).
B O V C ‖ CFRP plates 4 0 0 × 1 0 × 1 . 2 Strengthened by NSM vertical CFRP strips transverse to the surface in both sides of the beam (Figure 2(a)).
BOCWCFRP wraps 4 0 0 × 3 0 0 × 1 . 2 Strengthened by one layer of externally bonded CFRP wraps by epoxy in both sides of the beam (Figure 3(c)).
Where 𝐿 is the length of NSM reinforcement.