A Parametric Investigation of the Effects of Curvature and Skew on a Box Type Bridge

structural engineering

For the objective of the parametric research, six box girder bridge models were created with variable curvature and constant span length. Additionally, five models were created with variable skew angle, and thirty models were created for combined effect. An example of a box Girder Bridge is chosen from the available literature so that a validation study may be carried out on it. This is done in order to validate the finite element modelling approach. After modelling and analysing the example box girder in SAP 2000, it was discovered that the replies fairly matched the findings that were provided in the relevant literature. In order to carry out the parametric investigation, SAP2000 representations of all forty-two box girder bridges were created. The length of the span, the cross-section, as well as the material quality, have not altered. The only parameters that are subject to modify are the skew angle and the radius of curvature. The single cell box makes up the box girder bridge's superstructure, which can be seen in the cross section of the bridge. The bridges' curvature only changes in a horizontal manner over their whole length. Every model is tested for both its own weight and the moving load that the vehicle will experience. A static analysis taking into account both dead load and moving load in addition to a modal analysis is carried out. Recordings are made of the longitudinal stress at the top and bottom of the cross sections, as well as the bending moment, torsion, and deflection. When contrasted with the reactions of a straight bridge, the responses of a box girder bridge with a curved plan are examined.

This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.