Study On Aircraft-Taxiway Bridge Coupling Vibration With Grillage Method Based On Finite Element Model Updating

Among the airport system,Taxiway Bridge solves the traffic conflicts.With the development of urbanization in China,the construction of the airport will be more threedimensional.Taxiway Bridge will also become the core part of airport construction.At the same time,in the 1990 s the standard of the airport internal Taxiway Bridge load design is the E-class.The old Taxiway bridges have been used for more than twenty years resulting certain degree of aging problem.For more than E-class load aircraft,the old Taxiway Bridge meeting the large aircraft safety sliding has already become the hot topic of current research.By selecting the taxiway bridge in capital as the research object,the paper finished the following research work through many methods,such as structure dynamics,numerical analysis method and experiment testing and so on.1?The passage summarizes the domestic and finite element model updating theory,and introduces the correction method based on influence lines of strain.It describes a conventional vehicle-bridge coupled vibration of the main ways to build aircraft taxiing bridge coupled vibration equation,and proposed bridge safety and passenger comfort index.2?The paper proposes a test method does not interrupt the normal operation of the aircraft.Using optimization methods to measured results as the goal,establish initial finite element model of the design drawings based correction.3?G and H of the Taxiway Bridge site dynamic load tests were experimental strain influence line.By analyzing the test strain influence lines and model calculations strain influence line fitting situation,we established a finite element model of the bridge current Taxiway Bridge traits consistent.Modified model can replace the actual structure of theoretical calculations to reflect the actual structure of the working status,verify the correction method based on the feasibility of impact strain model lines.4?The coupled vibration model of the machine and bridge is established,which is based on the model,and the safety and comfort of the bridge between G and H are evaluated.