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Evaluation of load distribution factors in prestressed bridges in México

Abstract:

Structural analysis for the design of bridges begins by determining actions acting on the structure, which are distributed through the superstructure, causing particular effects for each structural element of composition. Vehicle load is the main live action acting on the superstructure of a vehicular bridge. To estimate the distribution of this charge in the structural elements, different distribution models are used, which in its simplicity, they have limitations and restrictions for your application. Examples of these are the Courbon method and its variations, Homberg chart, standardized methods as coefficients AASHTO (American Association of State Highway and Transportation Officials), AASHTO LRFD (Load and Resistance Factors Design), Communications and Transport Secretariat (SCT by its Spanish acronym) standards, OHBDC (Ontario Highway Bridge Design Code) y CSA (Canadian Standard Association). The …