ENERGY-DISSIPATION RETROFIT DESIGN METHOD FOR MULTISTORY ASYMMETRIC RC BUILDING USING DUAL FRAME MODELS

Abstract

In retrofitting multistory RC buildings which have uniaxial eccentricity, it is important to control torsional displacement to assure safety of structure under seismic input. In this study, elastic response of each frame of uniaxial eccentric three dimensional model is evaluated by using a pair of equivalent independent lamped mass models. The easy damper distribution method proposed for plane frames in previous paper is applied to these pair of lamped mass, and damper distribution in each plane frame are determined. The validity of proposed method is confirmed by applying to three-dimension model of typical Turkish RC building which has uniaxial eccentricity and weak stories.