MODELLING FOR MECHANICAL ELEMENTS OF T-SHAPED CROSS-SECTIONAL BEAMS WITH STRAIGHT HAUNCHES: PART I

This paper shows a model for T-shaped cross-sectional beams with straight haunches under uniformly distributed load that considers bending and shear deformations to find the fixed-end moments, carry-over and stiffness factors, which is the main contribution of this investigation. The methodology is developed by the conjugate beam method to find the rotations in the supports and by the superposition method this type of problems is solved. The traditional model takes account of only the bending deformations, and other authors consider bending and shear deformations, but the proportions shown in the tables are restricted. A numerical example has been developed to observe the application of the proposed model, and a comparison between the proposed approaches that considers bending and shear deformations against the traditional model that takes account of only the bending deformations presented in the tables and graphics. A significant advantage of the model proposed in this paper on any other document is that the fixed-end moments, carry-over, and stiffness factors can be obtained for any T-shaped beams with straight haunches.