OSG-17 with Dr. Konstantinos on Seismic Assessment and Retrofit of Reinforced Concrete Columns скачать в хорошем качестве

OSG-17 with Dr. Konstantinos on Seismic Assessment and Retrofit of Reinforced Concrete Columns

In this video, Dr. Konstantinos Megalooikonomou speaks about columns playing a very important role in seismic performance. Therefore, it is essential to apply a suitable analytical tool to estimate their structural behavior considering all failure mechanisms such as axial, shear, and flexural failures. For the definition of deformability of such columns, the definition of plastic hinge length is reassessed through consideration of yield penetration effects. Confining wraps or jackets to rehabilitate and strengthen existing substandard reinforced concrete (RC) columns such as those described in the present talk has proven to be an efficient technique for seismic retrofit of structures. A new constitutive material law was developed and was added to the source code of OpenSees as a uniaxial material, i.e. the ‘FRPConfinedConcrete’ material. In order to evaluate the relevance and accuracy of the proposed material model, its performance was corroborated through simulation of a series of cyclic loading tests performed on FRP (Fiber Reinforced Polymer)-jacketed columns with a rectangular or circular cross-section.