Beam Bridge Structural Evaluation Based on Rapid Nonlinear Finite-Element Modeling and Deflection Testing

By studying the essential relationship between ultimate and serviceability limit states indexes, a method that takes deflection-to-span ratio as evaluation criteria for traffic ability is proposed. Specifically, using the parametric design language of ANSYS, the finite-element model of beam bridge is established rapidly, and the model is modified by analyzing the deflection result. Then using the modified model, simulation experiments are carried out, and the deflection-to-span ratio of bridge under the vehicle load are worked out. Finally based on previous work, a set of evaluation standards is determined and used to evaluate the vehicle traffic on a bridge.