A STUDY ON TRAFFIC LIVE LOAD FOR A CABLE-STAYED BRIDGE BASED ON THE TRAFFIC CHARACTERISTICS OF AN URBAN EXPRESSWAY

Abstract

  Monte Carlo simulation is conducted in order to study the traffic live load for a cable-stayed bridge in an urban expressway. A probabilistic model of the traffic live load is developed by the traffic survey data. The study shows that the difference between the simulation and the conventional design method results from the differnce between the dominant and opposite influence line area. A new design traffic live load is proposed from this study. It turns out that the proposed design metod is more reasonable than the conventional one from the comparison of the safety index among structural members.