Monitoring of a bridge-deck using long-gage optical fiber sensors with a pulsed TOF measurement technique

ABSTRACT: Building stock forms a remarkable part of a nation’s capital. In Finland, for example, the figure lies at about 70% (www.rakli.fi). Still, budgeted costs for structural health monitoring and repair are often inadequate with respect to the need, although continuous health monitoring would enable property owners to optimize the repair time schedule, thereby decreasing costs and improving public safety. Health monitoring includes, for example, measurements of deflection, displacement, crack width and location, acceleration, humidity and temperature.