Estudio y diseño estructural de un paso elevado ubicado en el sitio La Y de montecristi para descongestionar el tráfico en la vía de enlace manta-portoviejo

Abstract

This work includes the study and structural design of a flyover located at the Y site of Montecristi to reduce traffic congestion on the road Manta-Portoviejo. The flyover is a structural element that allows making overpasses of two or more transport routes at different heights (pending) to avoid interrupting the flow of traffic including transit routes when they cross each other. For the development of this research two bridge design alternatives are proposed, which are the following: Bridge width. For the analysis of the two alternatives bridge design width 24.50 meters (top of the flyover walkway), as follow: 4 lanes (3.65 meters rail design). 2 intermediate spacers (1.60 meters). Shoulders at the ends (3.00 meters). 2 traffic railings, one at each end (0.35 meters). Alternative 1. The superstructure consists of a slab of reinforced concrete, 13 post-tensioned concrete beams Type IV of the Beams I AASHTO (beams), simply supported at the ends of the substructure (abutments), and two rails vehicular traffic located in the bridge ends. The infrastructure is made up of two reinforced concrete abutments with a total height of 11.65 meters (at both ends). One section with a span of 34.90 meters in length, at the bottom of the bridge (lower road) we have: 6 lanes (3.65 meters rail design). 2 dividers (1.50 meters). Shoulders at the ends of the roadway (2.00 meters) Islet or distance protection structure at the ends of the lower road (3.00) Alternative 2. The superstructure as the first alternative the slab is reinforced concrete, except that is supported on reinforced concrete beams. The substructure of the bridge will consist of two reinforced concrete abutments with a height of 9.45 meters, and three columns, column head is formed by a beam supporting the weight of the superstructure. Light two sections with 18.85 meters in length, where the bottom of the bridge will be formed as follows: 6 lanes (3.65 meters rail design). 2 dividers 2.50 meters (from the edge of the stack). Shoulders at the ends of the track (2.00 meters length). Islet or distance protection structure at the ends of the lower road (3.00).