| A supported deck steel arch bridge that had been retrofitted after the 1995 Hyogo-Ken Nanbu, Japan, earthquake was affected by strong ground shaking during the 2007 Niigata-Ken Chuetsu-Oki, Japan, earthquake. The bridge suffered minor damage by the earthquake and no structural damage of the main members was observed. To evaluate the seismic response during the earthquake and the effect of seismic retrofit, a series of dynamic analyses was conducted. The results underscored the strengthening of the arch springing by the seismic retrofit worked to prevent the serious damage. |
