- ÍtemAcceso AbiertoDeterminación de ondas corte VS y compresión Vp, para correlacionar con valores de N60 y parámetros geomecánicos del suelo(Universidad Católica de Cuenca., 2023) Mogrovejo Rodríguez, Boris Ivan; Almache Sánchez, Luis Mario; 0105872808This research was carried out with to determine shear waves Vs and compression Vp to correlate with N60 values and geomechanical parameters of the soil. In order to accomplish this objective, the direct SPT method and the indirect seismic refraction test were carried out, and it was determined the parameters of the soil type in the laboratory (granulometry, direct shear test, SUCS classification, Atterberg limits, moisture content). According to the results obtained by the SUCS classification, in the study area, there are different types of soil: silty sand (SM), silt (MH) of high plasticity, and clay (CH) of high plasticity. For geophysics, the Doremi Sara 24-bit equipment was used; considering that the length of each line is a total of 76 meters, 19 geophones were used to determine the velocities Vs and Vp, allowing the information required to be obtained to know the type of strata found in the place and also the data necessary for the correlation in the investigation. Based on empirical equations found in the reviewed bibliography, the relationship between the parameters: friction angle as a function of N60, Vp and Vs, cohesion as a function of Vp and Vs, number of blows of the SPT N60 as a function of Vp and the wave velocity Vs as a function of the N60 value of the SPT and the equations for the study area were obtained.
- ÍtemAcceso AbiertoOptimización para el predimensionamiento de zapatas aisladas centrales utilizando SmathStudio(Universidad Católica de Cuenca., 2023) Criollo Chimbo, Jonnathan Paul; Palma Zambrano, Eduardo Dioney; 0106556954Footings are critical elements in the foundation of any building, since they support the loads of the structure. Therefore, it is crucial that the footings are efficient to prevent the collapse of the structure. This document addresses the problem of designing central isolated reinforced concrete footings in an efficient and reliable manner. In the past, footing calculations were done manually using calculators, paper and pencil, this was prone to errors, producing unreliable results. However, thanks to technological advances, today these processes can be optimized using computer programs, which provides reliable results. This work seeks to develop a tool using the SmathStudio software to optimize the design of central isolated reinforced concrete footings, using the NEC 15 and ACI 318-19 regulations. Part of the purpose with this tool is to avoid the costs and limitations of commercial programs dedicated to professional use. In addition, this tool will not only facilitate the calculation processes, but will also provide a user guide so that users understand the algorithm used, this will allow them to perform calculations and obtain reliable results since the tool was evaluated with private software called SAFE. In conclusion, the hypothesis of this work is that the tool developed using SmathStudio will be efficient, reliable and accessible for the design of reinforced concrete central insulated footings. By providing a user guide and an algorithm, this tool will allow you to optimize calculations and understand the process behind them.
- ÍtemAcceso AbiertoCalibración del modelo numérico de una viga de hormigón armado definida para falla por corte(Universidad Católica de Cuenca., 2023) Cabrera Ordoñez, Darwin Israel; Suquilanda Minga, Bryan Steven; Barbecho Chuisaca, Juan Gabriel; 1150329280; 1106068826Numerical modeling with finite elements has revolutionized civil engineering by permitting the assessment and design of complex structures in a virtual environment. It is essential to properly calibrate the parameters and boundary conditions to accomplish effective optimization. It includes the implementation and examination of concrete and reinforcing steel constitutive models. The structural behavior of a reinforced concrete beam designed according to ACI 318-19 and tested for shear failure was studied employing analytical models and numerical analysis tools. The aim was to verify the performance of the numerical method, comparing the results obtained by finite element analysis with accurate data from experimental tests. According to Fuller-Thompson, material tests and concrete design were performed, and the numerical model in Abaqus was calibrated to achieve this objective. This process also involved modeling the geometry, defining boundary conditions, and discretizing finite elements. This comparison revealed a 6.139% load variability and a 7% discrepancy in strain energy between approaches. These procedures enabled the determination of load capacity, stress and strain distribution, and the identification of characteristic crack patterns. Furthermore, theoretical models proposed to establish the shear strength of concrete were assessed, classifying them as conservative, efficient, and non-conservative. Finally, the cracking patterns of the experimental and numerical models were compared, highlighting the tensile stress cracks due to bending and shear.
- ÍtemAcceso AbiertoCalibración del modelo numérico de una viga de hormigón armado definida para falla por compresión(Universidad Católica de Cuenca., 2023) Montenegro Palacios, David Hernán; Morales Pacheco , Ariel Sebastian; Barbecho Chuisaca, Juan Gabriel; 0107153926; 0107138786This degree work focuses on calibrating a numerical model of a reinforced concrete beam designed to experience failure under controlled compressive bending conditions. The need for this study lies in the importance of understanding and predicting the behavior of reinforced concrete structures, especially in maximum load situations. Abaqus software was employed as the primary tool to conduct the study. The aim was to compare the results obtained from the physical model with the numerical model, using two fundamental approaches: the maximum load capacity and the displacement energy concept. The calibration of the numerical model was based on the implementation of constitutive models representing the behavior of the materials constituting the reinforced concrete beam. The comparison was founded on capacity curves representing the relationship between the applied force and the resulting displacement in physical and numerical models. Cracking patterns and structural behavior were assessed in each case. The results revealed a detailed analysis of the variation in behavior between the models regarding displacement energy (4.66 %) and load-carrying capacity (6.34 %). This approach provided crucial information on how the numerical model approximated the actual behavior of the physical model.
- ÍtemEmbargoSimulación hidrodinámica tridimensional del ingreso de agua a la bocatoma lateral de la captación para la PTAP de Tixán(Universidad Católica de Cuenca., 2023) Salinas Vargas, Paul Israel; Ochoa García, Santiago Aurelio; 0107370058This thesis presents a hydraulic analysis conducted through a three-dimensional simulation of the lateral intake of the collection that supplies water to the potable water treatment plant in Tixán, operated by the company ETAPA in the city of Cuenca. This research was developed because the intake structures tend to suffer damage over time due to increased river flow during the winter season, brought on by elevated rainfall from the basins. This study involved actual data that included topographic information, geometry of the hydraulic structure, and flow characteristics were collected, including the various flow paths entering the intake. A realistic three-dimensional area and lateral intake model was constructed using Computational Fluid Dynamics (CFD) schematic methodology. This methodology adapts the Navier-Stokes and Reynolds equations to solve various systems of equations that are usually complex for conventional methods. The analysis facilitated the identification and characterization of the water flow behavior towards the intake. The different flow lines entering the structure were established and evaluated to understand how the surface water captured in this structure interacted.