Improving Seismic Response of a Low Height Reinforced Concrete Structure With Energy Metallic Device

Abstract eng:
The results of nonlinear seismic analysis of a five-story building composed of reinforced concrete walls are shown. PERFORM 3D [1] computational program was used for the purpose of carry out the nonlinear seismic analysis of reinforced structure with metallic dissipating device (ADAS ) and compare their results with those of non-reinforced structure To represent the nonlinear behavior of structural elements, the following models has been used: fibers for the walls, and concentrated plasticity bending for beams and columns. The floor slabs behavior were considered as rigid diaphragm elastically in its plane, and that the vertical elements are perfectly embedded in the base of the first floor. For Seismic action, three pairs were used records accelerations. the recommendations of FEMA 356 [2] and the ASCE 41-06 [3] has been taken in account , both for generating the structural model, as well as control the stresses and allowed maximum deformations in the structural elements. The results showed that the lateral displacements at the center of mass (CM) of each floor were reduced by up to 53% (top floor); on the walls of reinforced concrete inelastic deformation of the reinforcing steel it was reduced up to 70% maximum and getting an elastic behavior by shear force. Finally the maximum rotations in beams and columns did not exceed the limit specified by the ASCE 41-06 [3], and verified that the original building will not suffer structural collapse against a rare earthquake.

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