The ANSYS Secondary Development Study For Space Computation Method Of Cross Diaphragm In Box Girder

With the development of city construction and traffic in our country, the amount of city bridge and highway crossroads augments increasingly. No matter the style or conformation of bridges become more advanced and acclimation. Continuous box girder casted in site which has favorable structure performance takes place of simple supported beam in superstructure. And in infrastructure, single column abutment and frame abutment are more and more favorable in design personnel because of their agility of setup position. But setting of these abutments leads to more complex mechanics in cross diaphragm and box girder. Furthermore, in a position to reflect practical condition is not merely demanded in structural analysis, to obtain satisfactory result more quickly and economically is also expected. So in the course of city bridge design, the computational method of cross diaphragm in continuous box girder bridge is required more and more imminently.Based on the description of the FEM, This paper uses the common procedures——ANSYScarry on the secondary development and get the macro that can conduct parametric modeling of the Box Girder Bridge,impact line loading, the modal analysis. With the macro we will be able to complete the box girder bridge model of the three-dimensional space and be able to carry on the most disadvantageous position loading according to standard, Because I choose SHELL63 ,I can obtained internal forces sought while getting stress,this is more convenient for the design Reinforcement. It can carry on the modal analysis, get the frequencies and vibration, and lay the foundation for dynamic analysis. Bridge also conducting tests for the analysis of the referencepulse.Then, through the static-analysis,I inspect the impaction of the The same span continuous box girder curve radius to the Central Cross-clapboard roof deformation and stress ,and compare with the straight-line bridge. Then using modal analysis to get the frequency and vibration of radius above all. With a view to get the change in frequency of it,it also lay a theoretical basis for the judge of effectiveness of frequency calculation in future Dynamic load experiments.Finally, I focused on a Interchange Ramp Bridge project to carry on an analysis, and cite professional procedures"prestressed concrete, Concrete Bridge" and the" "Dr. bridge " separately to compare with the findings of macro, verify the correctness of macro, at the same time alsoshows the applicability and accuracy in the Diaphragm of continuous box girder design.