Design and Seismic Performance of Tied Braced Frames

In this work, a tied braced frame (TBF) was developed to achieve uniform inelastic deformation in an eccentrically (EBF) by connecting links across the entire height with tie members. Herein, TBF design method is proposed, considering new lateral force distribution pattern. To better evaluate seismic performance, and verify advantages of TBF, nonlinear time-history analysis fragility were conducted using 6-, 10-, 20-story models designed method, as well EBF for comparison. It found that maximum inter-story displacement angles model reduced 10%, 3.3% 6.3% at 84th percentile 6, 10 20 stories, respectively, DCF values also about 5.5%, indicating structure more reasonable. The results revealed featured distributions normalized link shear forces drift ratios, resulting damage ductile behavior. Furthermore, under earthquakes, axial similar those calculated equation, thereby reliability method. Under same conditions, PGA are 10~15% lower 50% exceedance probability compared structure; CMR 6-story, 10-story, 1.12, 1.09, 1.06 times higher than structure, respectively. Notably, based on comparison from models, exhibited anti-collapse performance.