Analysis of seismic damage to highway bridges in Mianzhu City during Wenchuan M_s 8.0 earthquake

Bridges are severely damaged in Wenchuan Ms8.0 earthquake.The seismic damage to bridges in Mianzhu City is analyzed based on the site investigation.Firstly,the landform and geology of Mianzhu City,the isoseismic map and the general situation of the bridges are presented.Secondly,the seismic damage to bridges is analyzed.Thirdly,several typical samples of seismic damage of the bridges are introduced,and same conclusions and suggestions are given lastly.