Prediction of Effective Width of Varying Depth Box‐Girder Bridges Using Convolutional Neural Networks

Abstract

Effective flange width is widely used in bridge design to consider the effect of shear lag. The simplified formula for the effective flange width of box girder bridges of variable depth in existing codes and studies may not be conservative, and accurate methods, such as the finite element method, are time-consuming. The purpose of this research is to develop a method that uses a convolutional neural network (CNN) to predict the effective width of box girder bridges of varying depths. These models have been trained, validated, and tested on datasets generated from thousands of finite element models. The lower error in the test set indicates that the CNN model can be used to predict the effective width. In addition, the impact of different architectures is also studied. The proposed method makes real-time analysis possible and has a wide range of applications in the analysis and design of box-girder bridges at different depths.

Benefit Evaluation of Preventive Maintenance of Highway Bridges Based on Fuzzy Neural Network

“…On the basis of determining the fuzzy beneft level and the fuzzy comprehensive evaluation maintenance beneft value, a neural network evaluation model is constructed for scientifc evaluation [20]. Te evaluation indicators of diferent bridges are brought into the fuzzy analytic hierarchy process model to obtain the evaluation value of preventive maintenance benefts of these bridges [21].…”