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In order to further study the application of corrugated steel web composite box girder bridge in practical engineering, this paper selects a corrugated steel web box girder bridge with transverse diaphragms as the theoretical model, and uses the cross space grid method to simulate The model. Beam188 is the element type selected for this ANSYS modeling. The longitudinal element of the web is equivalent to a flat plate according to the plate and shell theory. The shape of the vertical element remains unchanged. Under the condition of its own weight, the natural frequency and deflection of the model are compared. The research results show that when the web is divided into whole and separated, the errors of the first-order natural frequencies of the two spatial mesh models and the solid finite element model are both within 10%, and the accuracy of the overall division is higher.

Research and Application of Cross Spatial Grid Method in Combined Box Girder Bridge with Corrugated Steel Webs