Bridge Seismic Retrofit Planning Program

摘要

The report documents a study that determined the effectiveness and cost of both previously used and proposed bridge superstructure seismic retrofit methods, including longitudinal joint restraining, transverse bearing restraining, bearing seat extension, replacement of vulnerable bearings with conventional bearings, and replacement with base isolation bearings. In addition, a procedure was developed for systematically prioritizing the state's bridges for seismic retrofitting on the basis of their importance as lifelines and their vulnerability to collapse.