Research On The Effect About Seismic Performance Of Frame Shear Structure With Opening Slab

In order to meet architectural lighting, stairways and elevator shafts need to open holes in the floor. When seismic action, the local opening slab reduce the floor stiffness, the shape center and the mass center more larger shift than not opening floor. Therefore, the structural analysis must consider the actual rigidity of the floor.In this paper, the establishment of 4%, 20%, 36% floor openings rate of 16 story frame shear wall structure in Gansu province is assumed elastic and rigid floor. Apply response spectrum method of ETABS calculate model under small earthquakes,to compare the same floor assumption with difference in openings rate, the same rate of openings with difference in floor assumption influence of structural quality participation,vibration period, bottom shear force and shear-weight ratio, top displacement, the maximum story drift angle and horizontal shear force distribution between the frame and shear wall on the structure. Apply Pushover of SAP2000 calculate model,to compare performance point of the same floor assumption with difference in openings rate, the same rate of openings with difference in floor assumption, top displacement of signs of structural damage. The conclusion is as follows:When the same floor assumption with floor openings rate increases, quality participation coefficients, the first third periods, top displacement, maximum story displacement angle, the base shear, the performance point of the base shear, signs of structural damage of the top displacement decreases, the shear-weight ratio increases, but the difference is not great. When the same openings rate, period, top displacement, maximum story displacement angle, signs of structural damage of the top displacement is large than the rigid floor assumption, but the difference is not great. As for opening slab at most 36%, model of this paper apply rigid floor assumption to calculate frame shear wall structure.