How does the bridging machine work?
Then, the beam is placed between the first and the second piers of the bridge pier by the conveying mechanism, is generally a few beams form a bridge, a bridge frame can make bridge machine move to between the first and second frame pier pier next beam. You'd better take a look at the actual construction process.
I saw at the site of the bridge building machine, its main principle is: (methods, mainly introduced the first beam behind it in between the land bridge was) and the first and the second piers of the bridge pier, the establishment of six pivot, and then put the prefabricated beam from the prefabricated plant shipped between the land and the first pier place
If this thing can be explained with the image should be more clear