On the dynamic behavior of composite box girder embedded with viscoelastic layer

In this research a traditional steel box girder was redesigned and combined with the viscoelastic material to upgrade the dynamic performance for the structure. A finite element formulation was utilized for the girder combined with the viscoelastic material and the associated material model, which was able to describe the material behavior accurately was also introduced. A nonlinear dynamic analysis in the time domain was carried out for the girder when subjected to the dynamic loading. The responses for the box girder incorporated with the viscoelastic material were then compared to the one without the viscoelastic effect.