Análisis hidrológico-hidráulico para los puentes en zonas de inundación generadas por el Proyecto "Pacalori"

Abstract

This theme consists of a hydrologic and hydraulic analysis for the drainage of major art works in the project PACALORI at Calabi system, in order to set parameters and design criteria for bridges to be affected by the project. Hydrometeorological, morphological, hydrological and hydraulic aspects are involved in the analysis, concerning the drainage flow and generally undermining. By applying the HEC-RAS program, are shown overflows in channels at the bridges belonging to the rivers Pajan and Las Tablas. In addition, hydraulic parameters about the maximum drafts which vary between 5.58m and 1.98m were determined; the speeds fluctuate between 1.01m/s to 6.26m/s the flow in most rivers is subcritical except in Las Tablas river, which presents a regime change to supercritical flow For analysis of scour were used theLischtvan-Levediev and Einstein methods, with the results anaverage was obtained, determined undercuts varying between 3.11mand 0.63 m, except thePajan river which does not present scour. This research concludes that the location of the bridges is favorable forLagarto and Lechugalrivers, except for the bridges over Pajan and Las Tablas rivers because these are flooded; however exists a possible solution to deploy a new bridge downstream at Las Tablas river.