Emergency Actions after the impact of a vehicle with the main beams of the bridge
Spanish Ministry of Public Works
PROBLEMS:Overpasses with insufficient height. Heavy vehicles carrying special items circulating with excess of height. Poor conditions of the pavement and excessive dynamic movements. DAMAGES:Usual breakage of the edge beam and damage to the following beams.; Depending on the magnitude of the impact; Loss of concrete mass in the cross section; Complete breakage of the bottom flange of the beams; Partial or complete breakage of prestressing tendons; Complete or partial breakage of concrete reinforcement; Longitudinal cracks between the web and the top flange; Movement of bearing systems

Depending of the damage after the impact; local repairing with concrete reinforcement; arrangement of concrete reinforcement and increase of bottom flange; passive and lower wing screed; widened of the web and arrangement of prestressing bars; replacing of the edge beam; demolition of the edge beam and slab; arrangement of the new beam and repairing of the deck