diseño de la superestructura de un puente doble arco tablero intermedio en acero estructural

Abstract

This study addresses the design of the superstructure of a structural steel arch bridge, conceived to enhance road connectivity in mountainous highways. The project focuses on the bridge over the Cutuchi River, located on Avenida Yolanda Medina, an infrastructure that currently represents a bottleneck due to its limited vehicular capacity and structural deterioration. As a solution, a tied-arch bridge with an intermediate deck is proposed, designed in compliance with AASHTO LRFD 2020 standards and other applicable regulations. The structure incorporates high-strength steel in an optimized configuration to improve load distribution and extend its service life. Additionally, strategies are implemented to control deformations and ensure adequate performance under service conditions. The study also analyzes the dynamic behavior of the bridge, ensuring its stability and regulatory compliance. Vibration modes and response to extreme loads are evaluated, verifying its structural efficiency and its capacity to operate safely and durably.