Fragility of skewed bridges under orthogonal seismic ground motions

摘要: The paper evaluates seismic fragility characteristics of skewed bridges under simultaneous action orthogonal ground motion components. effect skew angle on bridge is investigated through nonlinear time-history analyses Painter Street Overpass, a 38.5° located in Rio Dell, CA, and six representative with angles varying between 0° 50°. Ground incident varied from to 180° investigate the direction incidence performance. Bridge response used generate curves contours plots that quantify sensitivity angle. For any value angle, vulnerability increases an increase angle; however, no such general trend found describe characteristics. Results show variation maximum rotat...