Abstract
Multi-lateral resistant mixed structure is composed of semi-rigid connection steel frame, buckling restrained braces and concrete core tube through the floor. To compare the different layout of braces for seismic behavior of this structural system, five different layout forms of a three dimensional multi-lateral resistant mixed structure were designed in this paper. The models were established by the ABAQUS. Through the elastic-plastic time history analysis under the action of the rare earthquakes, the layout of braces for the structural deformation were studied. Based on the seismic behavior of the energy response analysis, from the views of the relationship of hysteretic energy dissipation formation, the layout forms of braces for the hysteretic energy were studied. The advantages and disadvantages of the layout forms of braces were discussed, which could be the reference for the design of multi-lateral resistant mixed structural system.
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