Analytical and Numerical Study of RC Frames with URM Infilled Retrofitted by CFRP

Abstract eng:
It is obvious from experience that structures which had not been designed and constructed according to standard codes, and therefore do not have enough lateral stiffness, will undergo sever damages during intense earthquakes. As an effective rehabilitation technique, strengthening unreinforced masonry (URM) infills with fiber reinforced polymer (FRP) can improve their contribution in load-bearing action and in doing so, they can be considered as a structural element. In this article, the method of Equivalent Strut for modeling infill walls is analyzed with the aid of finite element (FE) procedure, and then by defining the compressive and tensile strut behavior, URM infills are modeled both in un-retrofitted and retrofitted states. The results of nonlinear push-over analysis show that the proposed model can give the behavior close to the experimental specimens.

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