EXPERIMENTS ON THE CALIX AND BROTONNE VIADUCTS

EXPERIENCES SUR LES VIADUCS DE CALIX ET BROTONNE

THE CALIX AND BROTONNE VIADUCTS ARE EXCEPTIONAL STRUCTURES ON WHICH INVESTIGATIONS HAVE BEEN CONDUCTED SINCE 1973, IN PARTICULAR MEASUREMENTS OF DIFFERENTIAL SHRINKAGE AND LONG-TERM DEFORMATIONS ON THE CALIX BRIDGE; CONTROL OF CONCRETE ON BOTH VIADUCTS. IN 1976, IT IS ENVISAGED: TO CONTINUE LONG-TERM DEFORMATION MEASUREMENTS ON THE SEGMENT SITUATED IN THE CENTRE OF THE LARGE SPAN OF THE CALIX BRIDGE; TO CONTINUE OBSERVING THE OPERATION OF THE BRIDGE BEAMS AND CANTILEVER JOINT ON THE CALIX BRIDGE.