Displacement-based earthquake loss assessment methodology for RC frames infilled with masonry panels

A displacement-based earthquake loss assessment (DBELA) methodology for RC frames is proposed when the influence of masonry infill panels is taken into account. The yield displacement, period–height relationship and hysteretic characteristic of the fully-infilled RC frames are discussed in detail. The equations of DBELA for fully-infilled RC frames are established to obtain the capacity and demand curves for the seismic loss assessment. Nonlinear dynamic time-history analyses are carried out to investigate the validity of the proposed DBELA methodology. Numerical comparisons indicate that the proposed methodology can provide precise vulnerability assessment of fully-infilled RC frames in both the yield limit state and the post-yield limit states.