OPTIMUM RETROFIT OF A 3-STORY RC FRAME CONSIDERING NONLINEAR SSI

New and existing structures should always satisfy the necessities of their contemporary codes. Continuous changes in design codes make it inevitable for existing structures to need to be rehabilitated every now and then so that they can fulfil the least expectable duty they are meant to. The expenses charged to perform a retrofit task may vary so vastly for one single project with a unique aim. Minimizing the costs while maintaining the outcomes is what most experts have been working on for decades. In this study, an optimization algorithm is employed to perform the retrofitting task in the most optimized manner. Soilstructure interaction (SSI) is assumed to exist in order to make the results as exact as possible. The required retrofitting material, CFRP in this case, has been found to be 74.4 square meters for the case including SSI and 98.4 for the case without this phenomenon. Costs are compared as well to make a judgement of whether or not SSI should be taken into account.