PREVENTIVE WORKS FOR FATIGUE DAMAGE IN ORTHOTROPIC STEEL BRIDGE DECK BY SFRC PAVEMENT AND LONG TERM MONITORING OF THE COMPOSITE ACTION

Abstract

Composite orthotropic steel deck systems with SFRC pavement was proposed as an effective preventive work for fatigue damage based on the investigations on the effects on the stresses on the deck systems. The systems were applied to the actual structure for the first time, to the lower deck of Yokohama Bay Bridge. The effect of stress reduction by SFRC pavement were verified by FEM analysis and staric loading tests on the actual bridge. Furthermore, in order to evaluate the effects of SFRC pavement for long term, the monitoring system was developed by using optical fiber sensors.