Evaluación de la socavación en el puente ubicado en la calle Eloy Alfaro del río Gualaquiza

Abstract

This degree work focuses on evaluating the bridge scour in the Gualaquiza River. The morphology of the basin, bathymetric topographic survey, granulometric analysis, and survey of the bridge geometry were evaluated to analyze and calculate the response to maximum flood events and to understand the hydraulic hydrological phenomena present in the study area.

The Number Curve method, Meteorological, and Hydrological information from Gualaquiza (M189), its statistics, and peak flows for the 50 and 100 years return periods were determined using ArcGIS software, Copernicus, and OpenLandMap satellite servers. The recommended peak flows of 84.9 m3/s and 117.1 m3/s were obtained using the HEC-HMS software based on the characteristics of the basin, respectively. By applying the HEC-RAS software, the peak flows, velocity, and Froud number were obtained for the different return periods.

Scour was calculated by applying empirical formulas correlated with the parameters applied to average the results. For the general scour, an average of 1.11 m was obtained; the results of local scour in the intermediate pile are 3.01 m, and the scour in the right abutment is 3.14 m for a return period of 100 years. According to the information and calculations performed, it has been determined that there is local scour, and it is necessary to reinforce the foundation with gabion or rockfill walls at a height of 1.50 m to preserve the integrity and functionality of the bridge.