Evaluation of Load Capacity of Stratified Soils (2 Layers) by Means of Numerical Analytical Comparison

Revista Facultad de Ingeniería

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Title Evaluation of Load Capacity of Stratified Soils (2 Layers) by Means of Numerical Analytical Comparison
Evaluación de capacidad de carga de suelos estratificados (2 estratos) mediante comparativa analítica-numérica
Creator Quintero-Chamorro, Jairo Alejandro
Martínez-Ortega, Brayan Julián
Cruz-Velasco, Lucio Gerardo
Subject Stratified soils
load capacity
numerical modeling
imaginary foundation
Terzaghi method
finite elements
Suelos estratificados
capacidad de carga
modelación numérica
zapata imaginaria
método de Terzaghi
elementos finitos
Description The methods for determining load capacity in stratified soils are numerous and differ in their methods and results. These differences in analysis lead to uncertainty in engineering practices or over-dimensioning of the foundation solution. This study seeks to determine three analytical methods of load capacity in stratified soils (2 layers) for shallow foundations: 1) Imaginary foundation, 2) Average parameter method (APM), and 3) Terzaghi's method to compare their results with those obtained from numerical modeling by means of the finite element method using a widely applied software (Abaqus academic version). Within the methodology developed in the finite element modeling, variables were parameterized (modulus of elasticity, depth of deflection, and displacement-load) and two behavioral laws were evaluated (Elastic and Drucker-Prager). The results that were obtained from the analysis show that when performing numerical modeling using the law of elastic behavior in soils of two layers, exaggerated results are generated with respect to analytical methods. Another important result is that when hard soils are on top of soft soils the results of numerical and analytical methods tend to be similar to each other. Most importantly, the variables that have the greatest influence on the load capacity in soils of one and two layers are the angle of friction, yield stress, and in the case of numerical analysis the constraint displacement (load). In addition, it was observed that for numerical modeling better results are obtained when considering an elastoplastic model, such as Drucker Prager.
Los métodos para encontrar capacidad de carga en suelos estratificados son cuantiosos y difieren en sus métodos y resultados. Lo anterior, hace que exista incertidumbre en la práctica de la ingeniería o que se incurra en sobredimensionamiento de la solución de cimentación. Este trabajo busca estudiar tres métodos analíticos de capacidad de carga en suelos estratificados (2 estratos) para cimentaciones superficiales: 1) Zapata imaginaria, 2) Método de Parámetros Promedio (APM) y 3) Método de Terzaghi, para comparar sus resultados con los obtenidos de la modelación numérica por medio del método de elementos finitos usando un software de amplia aplicación (Abaqus) versión académica. Dentro de la metodología desarrollada en la modelación de elementos finitos se parametrizaron variables (módulo de elasticidad, profundidad de desplante y desplazamiento-carga) y se evaluaron dos leyes de comportamiento (Elástica y Drucker-Prager). Los resultados que se obtuvieron en el desarrolla del análisis apuntan a que al realizar las modelaciones numéricas usando la ley de comportamiento elástica en suelos de dos estratos dan resultados exagerados respecto a los de métodos analíticos, otro resultado importante es que cuando se tiene suelos duros sobre suelos blandos los resultados de métodos numéricos y analíticos tienden a ser similares entre sí. Dentro de las conclusiones más importantes tenemos que las variables que más influyen en la capacidad de carga en suelos de un estrato y dos estratos son, el ángulo de fricción, esfuerzo de fluencia y en el caso de las modelaciones numéricas el desplazamiento impuesto de falla (carga). Además, se tiene que para las modelaciones numéricas se obtiene mejores resultados cuando se considera un modelo elastoplástico, como Drucker Prager.
Publisher Universidad Pedagógica y Tecnológica de Colombia
Date 2021-02-24
Type info:eu-repo/semantics/article
Artículo de revista
Format application/pdf
Identifier https://revistas.uptc.edu.co/index.php/ingenieria/article/view/12080
Source Revista Facultad de Ingeniería; Vol 30 No 55 (2021): January-March 2021 (Continuous Publication); e12080
Revista Facultad de Ingeniería; Vol. 30 Núm. 55 (2021): Enero-Marzo 2021 (Publicación Continua); e12080
Language eng
Relation /*ref*/B. Das, N. Sivakugan, Principles of foundation Engineering. Boston: Cengage Learning, 2019, pp. 2.
/*ref*/L. Cruz. 042082. Class Lecture, Topic: “Load Capacity.” School of Civil Engineering, University of Cauca, Popayan, 2007.
/*ref*/C. Le, “Estimation of bearing capacity factors of cohesive-frictional soil using the cell-based smoothed finite element method,” Computers and Geotechnics, vol. 83, pp. 178-183, Mar. 2017. https://doi.org/10.1016/j.compgeo.2016.10.023
/*ref*/S. Eshkevari, A. Abbo, G. Kouretzis, “Bearing capacity of strip footings on sand over clay,” Canadian Geotechnical Journal, vol. 56, no. 5, pp. 699-709, May. 2019. https://doi.org/10.1139/cgj-2017-0489
/*ref*/J. Lee, S. Jeong, J. Shang, “Undrained bearing capacity of ring foundations on two-layered clays,” Ocean Engineering, vol. 119, pp. 47-57, Jun. 2016. https://doi.org/10.1016/j.oceaneng.2016.04.019
/*ref*/P. Rao, Y. Liu, J. Cui, “Bearing capacity of strip footings on two-layered clay under combined loading,” Computers and Geotechnics, vol. 69, pp. 210-218, Sep. 2015. https://doi.org/10.1016/j.compgeo.2015.05.018
/*ref*/S. Feng, X. Ding, Q. Zheng, Z. Chen, D. Zhang, “Extended stiffness matrix method for horizontal vibration of a rigid disk embedded in stratified soils,” Applied Mathematical Modelling, vol.77, pp. 663-689, Jan. 2020. https://doi.org/10.1016/j.apm.2019.07.035
/*ref*/H. Kou, W. Guo, M. Zhang, Y. Xu, “Axial resistance of long rock-socketed bored piles in stratified soils,” Ocean Engineering, vol. 8, pp. 58-65, Sep. 2016. https://doi.org/10.1016/j.pisc.2016.06.080
/*ref*/R. Casusol, “Análisis comparativo de la capacidad de carga para un suelo granular empleando métodos analíticos y computacionales,” Grade Thesis, Pontificia Universidad Católica del Perú, Lima, 2020. http://hdl.handle.net/20.500.12404/16778
/*ref*/L. Cruz. 042082. Class Lecture, Topic: “Imaginary Foundation.” School of Civil Engineering, University of Cauca, Popayan, Sep. 2018.
/*ref*/J. Duque, C. Lascarro, M. Gil, O. Garcia, W. Fuentes, “An extended bearing capacity equation for shallow foundations on granular trenches in soft soil,” Acta Geotechnica Slovenica, vol. 17, pp. 1-29, 2020. https://doi.org/10.18690/actageotechslov.17.1.12-22.2020
/*ref*/M. Huang, X. Qu, X. Lü, “Regularized finite element modeling of progressive failure in soils within nonlocal softening plasticity,” Computational Mechanics, vol. 62, pp. 347-358, Sep. 2018. https://doi.org/10.1007/s00466-017-1500-6
/*ref*/Y. Chok, M. Jaksa, W. Kaggwaa, D. Griffiths, “Assessing the influence of root reinforcement on slope stability by finite elements,” Chok et al. Geo-Engineering, vol. 6, pp. 6-12, Oct. 2015. https://doi.org/10.1186/s40703-015-0012-5
/*ref*/J. Tamayo, A. Awruch, “On the Validation of a Numerical Model for the Analysis of Soil-Structure Interaction Problems,” Latin American Journal of Solids and Structures, vol. 13, pp. 1545-1878, Apr. 2016. https://doi.org/10.1590/1679-78252450
/*ref*/N. Le, S. Ohtsuka, T. Hoshina, K. Isobe, “Discussion on size effect of footing in ultimate bearing capacity of sandy soil using rigid plastic finite element method,” Soils and Foundations, vol. 56, pp. 1-11, 2016. https://doi.org/10.1016/j.sandf.2016.01.007
/*ref*/M. Pérez, “Modelación de la capacidad de carga de cimentaciones superficiales apoyados en suelos no homogéneos,” Grade Thesis, Universidad Central "Marta Abreu" de Las Villas, Santa Clara, Cuba, 2016.
/*ref*/S. Koltuk, J. Song, R. Iyisan, R. Azzam, “Seepage failure by heave in sheeted excavation pits constructed in stratified cohesionless soils,” Frontiers of Structural and Civil Engineering, vol. 13, pp. 1415-1431, Dec. 2019. https://doi.org/10.1007/s11709-019-0565-z
/*ref*/M. Hamlaoui, A. Oueslati, B. Lamri, G. Saxcé, “Finite element analysis of the plastic limit load and the collapse mechaism of strip foundations with non-associatted Drucker-Praguer model,” European Journal of Environmental and Civil Engineering, vol. 19, pp. 1179-1201, 2015. https://doi.org/10.1080/19648189.2015.1005162
/*ref*/A. Mosadegh, H. Nikraz, “Bearing Capacity Evaluation of Footing on a Layered - Soil using ABAQUS,” Earth Science & Climatic Change, vol. 6, pp. 264-272, 2015. https://doi.org/10.4172/2157-7617.1000264
/*ref*/L. Quesada, “Determinación de la capacidad de carga en cimentaciones superficiales sobre bases estratificadas en suelos friccionales,” Grade Thesis, Universidad Central "Marta Abreu" de Las Villas, Santa Clara, Cuba, 2017.
Rights Copyright (c) 2021 Jairo Alejandro Quintero-Chamorro, Brayan Julián Martínez-Ortega, Lucio Gerardo Cruz-Velasco, Ph. D.

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