Simulation On Seismic Performance Of Masonry-infilled RC Frame With Multiple Anti Seismic Lines

Filler wall RC frame structure, which is quite common in building structure, is a kind of structure system. And this structure has lots of merits, such as the structure arrangement flexible, low cost, convenient construction etc. However, in the current design of RC frame structure, infilled wall is always regarded as a kind of nonstructural elements. In actual design, only roughly consider the infilled wall’s influece on frame structure in accordance of current codes and the cycle reduction coefficient. Actually, there exists very complex interaction between infilled walls and frame structures. The past studies and seismic hazard datas show that infilled walls have great impacts on frame structure’s bearing capacity, stiffness, deformation performance and energy dissipation ability. Reasonable designed infilled walls can serve as the first seismic line of a structure, improving the seismic capacity; unreasonable designed filler walls may cause negative phenomenon such as structural weak layer destruction, torsion failure. Especially in5.12Wenchuan Earthquake, a large number of main structure damage of frame structures and the frame-shear wall structures is relatively light, but a large number of infilled wall cracks, some even collapse, causing serious damage and casualties. In this case, how to ensure the infilled wall itself has enough resist ability, giving full play to its the first seismic line function appears especially important. This paper is based on ABAQUS, a large general finite element analysis software platform, in view of the infilled wall RC frame structure of the in-plane seismic performance research, mainly has the following several aspects:1) This paper firstly analyze and summarize the reason that infilled wall in-plane cracking destruction in the Wenchuan Earthquake. Then elicit the thought of structure multichannel seismic line by structure ductility design theory, and give certain theory elaboration to this thouhgt.2) Being based on ABAQUS, a large general finite element analysis software platform, to numerical simulate the infilled wall in-plane damage forms by establishing one frame ordinary infilled wall RC frame of separate finite element model.3) Improving infilled wall construction measures, and comparing the seismic performance with the ordinary infilled wall above, to explore the deformation ability and the crack resistance change of mansory infilled wall when full steel bars are feinforced, and at the same time "X" type and "V" type and "+" type are added. Additionally, comparing the impacts, which are resulted by the changes of the width of steel belt, on the performances above. Moreover, comparing the seismic performance when different kinds of steel belt are added in infilled wall frame structures.