Nowadays, most structures are made of Reinforced Concrete (RC). But many of them have to be strengthened sometimes. One efficient method for strengthening RC structures is the use of Textile Reinforced Concrete (TRC). Besides the flexural strengthening, TRC can rise the shear capacity, too. To investigate the shear strengthening of RC structures with TRC few experimental tests were conducted. These tests are the basis for numerical investigations of the shear strengthening with TRC, which is described in this paper. At first, the experimental setup will be described, afterwards the simulation of the several components of a RC structure strengthened with TRC is shown. The next step is the comparison between unstrengthened and strengthened beams. All simulations show a good conformity between numerical and experimental results. Based on these simulations, further investigations can be done to achieve more information about the complex behavior of a shear strengthening with TRC.