Evaluación estructural del puente sobre el río Vite mediante el análisis teórico de capacidad de carga planteado por The Manual for Bridge Evaluation (AASHTO)

Abstract

This research presents the evaluation methodology for existing bridges proposed by The Manual for Bridge Evaluation (MBE) of the AASHTO, imposed by the Ministry of Transport of Civil Works (MTOP) and the Ecuadorian Road Regulations (NEVI-12); adapting it to the specific conditions of Ecuador.

The structural analysis focused on the "Load and Resistance Factor Rationing" (LRFR), MBE methodology, applied to the case of the Bridge over the Vite River, which, based on the visual inspection of its elements, an acceptable deterioration of them was found, qualitatively qualifying the condition of the bridge

For verification, load combinations under the action of adverse situations with static and dynamic effects were applied, paying special attention to the effects of seismic loading, applying the Ecuadorian Construction Regulations (NEC-15). The calculation of the actual resistance considered structural parameters of the elements of the bridge. Subsequently, an analytical model was developed in the CSI Bridge software to determine the design load effects taking into account the current regulations.

The results were used for the determination of "RF" (Raiting Factor) in the sections where highest loads were expected to act; providing levels of reliability, stability and security required.