tag:blogger.com,1999:blog-6674579633306624783.post1697863467027984498..comments2023-10-26T00:55:45.774-07:00Comments on Bridge of the Week: Mexico's Bridges: Viaduct Beltran (2)Mark Yashinskyhttp://www.blogger.com/profile/05666521915699399827noreply@blogger.comBlogger1125tag:blogger.com,1999:blog-6674579633306624783.post-73427556995903894022009-11-21T12:05:05.538-08:002009-11-21T12:05:05.538-08:00Unfortunately, I don't have the dimensions of ...Unfortunately, I don't have the dimensions of the bridge. But you're right. It has been built as a balanced cantilever with post-tensioining. However, the short piers were only fixed to the superstructure during construction with highstrength post-tensioning rods. It has been detached afterwards, to allow for temperature movements and to prevent large forces on the pier due to seimisc loads. Especially, the short piers are susceptible to those forces. The tall ones are flexible enough to dissipate energy and to allow movements. <br>It is a quite typical configuration of balanced cantilever bridges in Mexico.Norrinhttp://www.blogger.com/profile/16952391082282038518noreply@blogger.com