Study On The Application Of The Method Of Combination Of Virtual And Reality In The Analysis Of The Vibration Characteristics Of The Large Wing Box Girder Structure

In recent years, with the rapid development of construction methods, Incremental launching construction is expanding the range of application. In the process of incremental launching construction, due to the limitation of variety of factors, the traditional control method of construction is unable to control the real-time and accurate detection of bridge construction, thereby leading to the deviation of bridge construction, even the accident. This paper to push construction method in the experimental model of continuous beam bridge as the research object, combined with modal analysis technology and virtual and reality technology on the model of continuous beam bridge vibration characteristics are analyzed, so as to achieve the construction control method of combination of virtual and reality. The paper mainly includes the following aspects:(1)This paper introduces the development, characteristics, advantages and applications of modal analysis technology and virtual reality technology, and illustrates the feasibility of the application of these techniques in the construction control.(2)To model for continuous beam bridge through the Midas software, calculation analysis on the dynamic characteristics of the relevant data. Then to start carrying on the modal analysis experiment, for modal analysis of vibration signals collected by using DASPsoftware to the data of dynamic characteristics. The results and finite element results were compared. The result calculation of the two methods is mutual authentication, which can be explained that the finite element modeling is feasible to study the dynamic characteristics of continuous beams.(3)The VRML technology are introduced, and describes the application of virtual reality technology, and based on VRML virtual reality model modeling method. Then the paper introduces the establishment of continuous beam structure model and the virtual environment construction process.(4)Using Simulink software to achieve the control and simulation of continuous beam bridge which is in the process of incremental launching costruction, where is in the virtual scenes. By modal analysis technology to detect and analyze to get vibration characteristic data and the plane motion, pitch angle displacement number of continuous girder bridge, then input the Simulink module, thus completing the vibration simulation of the continuous beam bridge.