Analytical Formulation for the Calculation of Bi-Girder Decks with Eccentric Loading

Abstract

An analytical approach is presented for obtain of the deformations and stresses of twin beam decks, widely used with channel-shaped precast beams. It is inspired and founded by the power of the strength function decomposition on more simple cases, and providing a mathematical formulation that leads the problem. This has been done according to outstanding work from Javier Manterola's “The open and closed section under eccentric loads” [1]. For the resolution, an approach to the mathematical formalism of Green's functions will be made. This analysis requires a set of admissible simplifications that approximate the solution fairly rigorously, and allow the direct evaluation of the action of moving loads. Finally, an analysis is carried out of the effectiveness of the transversal distribution achieved with various support conditions.