Study On The Seismic Performance Of The Framework Of Teaching Building With The High Damping Filling Wall

In our country, the teaching building is the main place for students'learning activities, and personnel is more intensive, so it is very important to ensure the safety of the teaching building frame in the earthquake for protecting students and teachers' safety. Because of the brittle characteristics of ordinary infilled walls, the bearing capacity of the main structure, stiffness and seismic failure mode has significant impact. The high damping mortar as the damping layer is added in the ordinaryinfilled wall, which can be absorb more energy under the seismic load, and enhance the ductility and the energy dissipation capacity of masonry infill wall in the teaching building.In this paper, one teaching building frame with new high damping masonry infill walls under low cyclic loading is completed,studied on the failure characteristics, bearing capacity, ductility and energy dissipation capacity of high damping masonry infill walls on seismic performance, The main contents are:(1)One teaching building frame with new high damping masonry infill walls under low cyclic loading is made. Describes its failure characteristics and acceptance process. From the test data of infilled wall frame, analysis the hysteresis curve, skeleton curve, stiffness degradation curve characteristics, and calculate the displacement ductility coefficient and energy dissipation coefficient of the specimen. The results show that:the ductility and energy dissipation capacity of the new high damping masonry infill wall is better than ordinary masonry filler wall.(2)Using the finite element analysis software ABAQUS to simulate the experiment model. In the process of modeling, determining the constitutive relationship, selecting element type and division the mesh is discussed. By comparison with the results of calculation results, and the analysis of the causes of error, it shows that the mechanical properties of the ABAQUS software can simulate the masonry infill walls well.(3)Based on the experimental model, numerical model which is one pin and six story frame building is established, to compare the different with infilled wall and new high damping infilled wall, do the dynamic analysis under frequently occurred earthquake and rare earthquake. The effect of new high damping infilled walls on frame is studied by the following indexes:story peak acceleration, layer displacement and inter story displacement angle.(4)Basing on failure modes of reinforced concrete frame,in the process of appearing the plastic hinge, study on the distribution of frame column shear effect, and make the analysis on the effect of variation of shear force distribution. Based on the single span, the change of shear distribution effects in the framework of teaching building is studied,and analyzes its influence on the frame column.