[2138] CONTRIBUTION OF SURROUNDING RC FRAME AND MASONRY WALL IN LATERAL RESISTANCE OF MASONRY INFILLED RC FRAME
キーワード：Contribution factor by infill and boundary frame, Drift limit., Masonry wall, RC frame, Seismic evaluation
Masonry infilled RC buildings act as composite structure and the contribution of each element is not clear under seismic loading. Therefore, the contribution of surrounding RC frame and infilled masonry has been estimated from experimental investigation of five half-scaled masonry infilled RC frames. In addition, the ultimate drift, after which masonry degrades rapidly, has also been evaluated. The observed results indicate that relative shear strength of RC frame to masonry dictates the contribution of RC frame and, the conservative ultimate drift of infilled masonry can be considered at 0.6% drift angle.