Repair and Strengthening of an orthotropic slab with UHPFRC wearing course Bridge at Illzach in France : first return from experience
|Conference:||IABSE Conference: Assessment, Upgrading and Refurbishment of Infrastructures, Rotterdam, The Netherlands, 6-8 May 2013|
|Published in:||Assessment, Upgrading and Refurbishment of Infrastructures|
|Total no. of pages:||8|
Built in 1970, this bridge located in Illzach in the East of France crosses Huningue Canal between Mulhouse and Rixheim. It comprises a single 106 m span carrying a two lanes motorway, with two lateral steel trusses and an orthotropic slab with transverse floor beams.
After the detection in 2009 of numerous cracks in the deck welds, a repair solution, based upon the replacement of the bituminous wearing course by a UHPFRC layer, with local connection to the orthotropic slab, was ultimately adopted. This solution had been thoroughly analyzed and tested in a research program, Orthoplus, on orthotropic slab fatigue issues. The works were performed during the summer of 2011, and the bridge was successfully tested and commissioned afterwards.
This paper presents the design, planning, implementation and monitoring of this innovative repair, after more than one year of operation and associated follow-up investigations.
repair monitoring UHPFRC steel orthotropic deck