Static Analysis And Structural Design Optimization Of Glass-curtain-wall Jet Bridge

Jet bridge is one of the vital equipment in a modern airport.It connects an airport terminal and an airplane.It is convenient for passengers to board and get off the plane through the jet bridge.However,jet bridges have being encountered lots of severs security incidents after they were invented.In addition to causing passages injury,these accidents also have a negative impact on the external image of the airport.Every passenger expects to use a safe and reliable jet bridge,while a designer should not only design qualified and safe products but also pay attention to cost control.Trying to design the best products with the lowest cost is the goal of every designer.In this study,the finite element model of a jet bridge was established using the commercial software ANSYS in the way of APDL.The static analysis of 5 different designs of the jet bridge were carried out.The best design was selected according to the requirement of displacement and stress,which will be used in structural design optimization of the jet bridge.In this study,radial basis function(RBF)is chosen to replace the finite element model to complete the design optimization work.Firstly,a numerical example and an engineering example are used to verify the accuracy of radial basis functions.Secondly,the performance of four different basis functions were compared in the numerical example.Thirdly,four surrogate models based on different basis functions were established to approximate the finite element analysis of the jet bridge,and the most accurate model was selected for the subsequent design optimization process.By observing the accuracy evaluation index of the model,it is found that the of RBF surrogate model have ideal approximate accuracy,which can completely replace the ANSYS finite element model to calculate the displacement,stress and volume of the jet bridge.The structural design optimization of the jet bridge was achieved by the teaching-learning optimization algorithm(TLBO)and RBF surrogate models.TLBO has not only the excellent ability of global searching,but also good robustness.The optimal design was further verified in the software ANSYS,which meets the requirements of displacement and stress.Finally,the weight of jet bridge structure was reduced by 6.96%.