EFFECTS OF THERMAL GRADIENTS ON GROOVED BRIDGES

EFFETS DES GRADIENTS THERMIQUES SUR LES PONTS A NERVURES

IN 1978 IT IS ENVISAGED: (1) TO MONITOR WITH TEMPERATURE GAUGES A NUMBER OF STRUCTURES (THE ARRAY VIADUCT, VIADUCT IN MONTLUCON-SUR-CHER, BRIDGE IN GREZ-NEUVILLE); THE BEARING PRESSURES WILL BE MEASURED OVER A 24-HOUR CYCLE TO ENABLE THE EVOLUTION IN THE STRUCTURE AS A FUNCTION OF THE TEMPERATURE MEASURED TO BE STUDIED; (2) TO SUMMARIZE THE TESTS ALREADY CARRIED OUT ON THIS TYPE OF STRUCTURE (ESPECIALLY ON THE BRIDGE IN CHAZEY).