| Steel frame-infilled prefabricated reinforced concrete wall structure(SFIPRCW)introduces concrete infill wall to frame,thus improves the lateral resistance of the structure greatly.The frame and infill wall work collaboratively through the connection of shear connector.At present,most of the research focus on bolt-connected SFIPRCW.In order to supplement the research on mechanical performance of SFIPRCW with other connecting methods,researches were taken on stud-cogging connected SFIPRCW.In this paper,stud-cogging connected SFIPRCW is studied by means of experimental research and finite element simulation.In the experimental research,the quasi-static test of three scaled specimens was carried out to study the lateral mechanical performance of SFIPRCW under cyclic loading.Bearing capacity,stiffness,energy absorption capacity were analyzed in this paper.The tests shows that the concrete infill wall takes most of the lateral load in the early stage of the test,and the failure mode of specimens is the rapid degradation of bearing capacity and stiffness caused by crack penetration at stud-cogging connection.Furthermore,cracks around the stud-cogging connection develops fast,which limits crack propagation of the wall to some extent.In the finite element simulation,parameter analysis were carried out on several factors: wall width,concrete strength and axial compression ratio of the steel column.The results shows that the width of infill wall has a great influence on the mechanical performance of SFIPRCW.The bearing capacity and stiffness decrease significantly with the decrease of wall width,while the concrete strength has little influence on the mechanical performance of SFIPRCW.Increasing the concrete strength has a slightly positive effect on the bearing capacity and stiffness of SFIPRCW,nevertheless,it has little influence on the later performance.Increasing the axial compression ratio of frame columns has little effects on the peak bearing capacity of the structure. |
