I The planned local by-pass Zeyern
In the course of the new building of the main road
B 173 the bridgework BW 1-1 over the Rodach is planned to be built as a local by-pass for Zeyern. At the same time the bridge functions as a flood gate for a HQ 100. We have taken a closer look at six of the design concepts.
The proposed new route for highway B 173 is to provide a local by-pass for Zeyern. In the new B 173, a bridge structure is needed to cross the Rodach River. At the same time the bridge functions as a flood gate for the HQ 100. Six possible types of prestress bridge structures were investigated and the most optimal design was chosen.
I The Structure
The chosen structure has a balanced stress-level without critical stress peaks.
The demand for prestressing steel can be limited because of the haunches and clamping in the fourth span.
The semi-integral and low-maintenance bridge is robust.. The filigree supports cause only low forced stresses.
Slender pier supports were used in order to reduce the self-limiting internal stresses in the structure.
The south abutment functions as a flexible abutment because of a total bridge length of approx. 97 metres.
Length of the bridge: approx. 97 m
Width of the superstructure: approx. 18 m
Client: Staatliches Bauamt Bamberg, Sektion Straßenbau