ROUTE 116 BRIDGE, QUÉBEC
During?the?rehabilitation?of?the?P-15210?Bridge,?which?straddles?Highway 116,?north?of?Highway?30?in?Québec,?Construction?Concrete?Ltd.?retained GKM?Consultants?to?monitor,?in?real-time,?the?concrete?deck?lifting operations.
For?monitoring?purposes,?Geokon?Model?4000?Vibrating?Wire?Strain?Gages?were?installed?at?the?upper?portion?of?the?pier?and?bottom?portion?of?the?box girder?element.?The?strain?gages?were?connected?to?a?Micro-1000?data acquisition?system?to?measure?the?strains?before,?during and?after?each?phase?of?the?rehabilitation?operation.
Using?Vista?Data?Vision’s?(VDV)?software,?the?results?were?compiled?and?plotted,?for?review?and?assessment,?in?near?real-time,?by?the?contractor?and?the?engineering supervisor. To?evaluate?the?strain?variation?due?to?thermal?effect?(without?traffic)?the?bridge?was?monitored?for?several?days,?and, depending?on?the?location?of?the?sensors,?the?results?revealed?a?deformation?between?100?µe?and?150?µe?over?a 10°?C?temperature?range.