When vertical loads applied to a straight beam, the structure will have large bending and torsion and lose steady, this phenomenon is called lateral torsion buckling.

Light lateral and axis and torsion vibrations do not affect the normal work, but the resonance state has severity effect to drill string.

In this paper, the lateral vibration dynamic analysis model of continuous box girder viaduct is presented in which the bending, torsion and distortion of box girder can be considered.