Studying the Cable Loss Effect on the Seismic Behavior of Cable-Stayed Bridge

As the demand and construction of cable-stayed bridges have increased, research on safety in event natural disasters such as fires explosions is actively being conducted. If a bridge damaged by an unexpected disaster or accident, it can cause serious traffic congestion huge economic losses. This study evaluates usability cable damage. Additionally, seismic performance impact damage are evaluated numerical analysis. To achieve this goal, modeled using 3D BEAM elements two-node elements. Then, was gradually damaging cable. The deflection, axial force girder, stress changes under far-field ground motion (El-Centro earthquake) were reviewed. A representative dynamic analysis program LS-DYNA utilized for analyses. results show that loss small number cables does not affect bridge. However, if five more continuously lost, earthquake occurs when already excessive deflections girders’ forces problems.