Abstract
This paper showed the failure mechanism of steel-concrete composite bridge deck having studs and ribs subjected to repetition of moving load by using 3 dimension nonlinear FE analysis. First, the property of interface element between steel and concrete was identified by sensitivity analyses. Next, progress of strains of concrete and steel elements obtained in simulation were examined throughout all the loading program of wheel running test. In particular, special attention was devoted to the processing of horizontal cracks inside concrete. Furthermore, static analysis was performed to highlight the difference of failure process given by the fixed point load and that caused by the moving load. Considering a particular failure mechanism of the deck under moving load, to set a proper limit states and control level for engineering practice was strongly required.
