Distortion effect analysis of a slip in steel-concrete composite box girder
By introducing the slip Angle displacement function,the distortion warping stress considering the slip effect was established.Based on the principle of stationary potential energy,the differential equation for distortion considering the slip effect was derived as well.With the distorted slippage influence coefficient κ defined which is only related to the material properties of concrete and steel,the type and arrangement of the pins,the initial parameter solutions of the differential equations under uniform and concentrated loads are provided.Based on the established Ansys finite element model of a steel-concrete composite box girder considering slip effect,the distortion stress and distortion angle under a uniform distributed load were found to be consistent with the theory proposed in this paper,adding weights to the correctness of the theory in this paper.By comparing research results with and without a slip,it is found that the distortion angle and distortion warpage with a slip is smaller than those without slip under a uniform load and closer to the finite element calculation results.Taking the slip effect into consideration,the distortion bi-moment and moment are redefined and found to be greater than those without the slip.
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