Nonlinear Analysis on Shear Performance of Twin I-Steel Reinforced Concrete Transfer Beams

To discuss the engineering application of steel reinforced concrete in the transfer beam of subway station, based on the shear performance tests on the specimens of twin I-steel reinforced concrete transfer beams, the finite element model of the transfer beams were established by using ABAQUS software in the study, and the shear performance of transfer beams were analyzed nonlinearly. The stress nephogram and load-displacement curves of transfer beams ware obtained. The calculation results of transfer beams were compared with the test results, so as to verify the rationality on the finite element model of transfer beams, and the influence of design parameters on the shear performance of transfer beams was also analyzed. The research showed that the transfer beams went though three stages of the initial crack, crack development and failure, and finally presented typical shear failure characteristics. Compared with the traditional reinforced concrete transfer beams, the twinle I-steel reinforced concrete transfer beams had higher bearing capacity and good ductility. With the increase of shear-span ratio, the bearing capacity of transfer beams decreased, but the ductility increased slightly. The bearing capacity and deformation capacity of transfer beams could be significantly improved by increasing the steel ratio of profile steel. In addition, improving the material strength of steel and concrete was beneficial to the shear bearing capacity of transfer beams.