Studies on Static Model Updating of Bridge Based on the Structural Parameters Analysis

Through the sensitivity analysis with girder flexural stiffness,bridge panel thickness and bearing rotary stiffness which are based on Tong-Yang Grand Canal Major Bridge in Ya-Tong Expressway,the girder flexural stiffness has great influence to the deflection of structure,while the bridge panel thickness and the bearing rotary stiffness could be ignore.Use the parameters adjusting coefficient which is calculated by the optimization algorithm to make model updating.The result of model calculation after updating and conventional load testing is compared.And the calculation results have a good agreement with the measured data.