Steel reinforced polymer (SRP) and steel reinforced grout (SRG) systems have emerged as viable and cost-effective solutions for the flexural strengthening of RC beams/slabs. Experimental tests recently performed at the University of Salerno have allowed for verifying the satisfactory behaviour exhibited by RC slabs strengthened in bending by SRG/SRP systems, both in terms of strength and deformability. Based on the results of this experimental campaign, a simple and efficient OpenSees model is presented herein with the twofold objective of: (1) simulating the behavior of shallow RC beams flexurally strengthened with SRG/SRP; (2) calibrating a constitutive law of the SRG/SRP-concrete interface based on the local deformation tensor evaluated. The preliminary comparison between experimental results and numerical predictions have allowed for verifying the accuracy of the developed model.
Delamination processes in RC beams strengthened with SRG/SRP
NAPOLI, ANNALISA;REALFONZO, ROBERTO
2015-01-01
Abstract
Steel reinforced polymer (SRP) and steel reinforced grout (SRG) systems have emerged as viable and cost-effective solutions for the flexural strengthening of RC beams/slabs. Experimental tests recently performed at the University of Salerno have allowed for verifying the satisfactory behaviour exhibited by RC slabs strengthened in bending by SRG/SRP systems, both in terms of strength and deformability. Based on the results of this experimental campaign, a simple and efficient OpenSees model is presented herein with the twofold objective of: (1) simulating the behavior of shallow RC beams flexurally strengthened with SRG/SRP; (2) calibrating a constitutive law of the SRG/SRP-concrete interface based on the local deformation tensor evaluated. The preliminary comparison between experimental results and numerical predictions have allowed for verifying the accuracy of the developed model.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
