Development of Fragility Models for Precast Concrete Shear Walls and Columns Connected by Grouted Sleeves

Performance-based seismic design and assessment of precast concrete (PC) structures have been widely studied. Fragility models for PC components have rarely been developed; however, it is a critical foundation for the above-mentioned design and assessment. Hence, this study was focused on developing fragility models for PC shear walls (PCSWs) and columns (PCCs) connected using grouted sleeves. To this end, 46 full-scale PCSWs and 45 full-scale PCCs, connected using grouted sleeves, were collected, and their test results were analyzed. Six damage states (DSs) were recommended based on the typical damage characteristics and with reference to the associated reinforced concrete (RC) components. Subsequently, the fragility models of PCSW and PCC were established for each DS using the drift ratio as the engineering demand parameter. In addition, the influence of the design axial load ratio on the fragility models was revealed. Through the comparison of fragility models between the PC and RC components, differences in parameters and curves of fragility models were quantitatively compared. These study achievements can serve as valuable references for performance-based seismic design and assessment of PC structures connected using grouted sleeves.