APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN”
The volcanic tephra Tierra Blanca Joven (TBJ) covers most of the Metropolitan Area of San Salvador where problems of mass wasting problems occur. To understand its behavior the Mohr-Coulomb, Modified Cam Clay and Hypoplasticity constitutive models were used to simulate consolidation and triaxial te...
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| Formato: | Online |
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Universidad de Costa Rica
2014
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| Acceso en línea: | https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/12103 |
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INGE12103 |
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INGE121032020-08-11T16:04:48Z APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” Chavez Hernandez, Jose Alexander Landaverde Quijada, José Miguel Ayala Valdez, Oscar Edgardo Mendoza Mejia, Lesly Emidalia Constitutive model simulation Tierra Blanca Joven Mohr-Coulomb Modified Cam Clay Hypoplasticity soil mechanics modeling The volcanic tephra Tierra Blanca Joven (TBJ) covers most of the Metropolitan Area of San Salvador where problems of mass wasting problems occur. To understand its behavior the Mohr-Coulomb, Modified Cam Clay and Hypoplasticity constitutive models were used to simulate consolidation and triaxial tests; looking for the one closer to real laboratory results. The constitutive models are used into finite element software to simulate the behavior of a soil mass (slope stability, bearing capacity etc.). Shear box, drained triaxial and consolidation tests were made in order to obtain the parameters for the models. The soil must be either saturated or dry, otherwise unsaturated properties are needed. After comparing the results of the constitutive model it was observed that none of them display exactly the real behavior observed in the laboratory. Mohr-Coulomb is the model that is used in all the geotechnical studies in El Salvador and it was the model that showed more deficiencies. Hypoplasticity showed good results in the triaxial tests but deviated from reality in the consolidation results. The results indicate that a different constitutive model and lab equipment are necessary (as TBJ is an unsaturated soil) to characterize the behavior of the soils in El Salvador. Universidad de Costa Rica 2014-06-24 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Artículo simulacion de modelos constitutivos application/pdf text/html https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/12103 10.15517/ring.v24i2.12103 Ingeniería; Vol. 24 No. 2 (2014): July-December 2014; 53-78 Ingeniería; Vol. 24 Núm. 2 (2014): Julio-Diciembre 2014; 53-78 Ingeniería; Vol. 24 N.º 2 (2014): Julio-Diciembre 2014; 53-78 2215-2652 1409-2441 spa https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/12103/pdf_28 https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/12103/html_7 Derechos de autor 2014 Revista Ingeniería |
| institution |
Universidad de Costa Rica |
| collection |
Ingeniería |
| language |
spa |
| format |
Online |
| author |
Chavez Hernandez, Jose Alexander Landaverde Quijada, José Miguel Ayala Valdez, Oscar Edgardo Mendoza Mejia, Lesly Emidalia |
| spellingShingle |
Chavez Hernandez, Jose Alexander Landaverde Quijada, José Miguel Ayala Valdez, Oscar Edgardo Mendoza Mejia, Lesly Emidalia APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” |
| author_facet |
Chavez Hernandez, Jose Alexander Landaverde Quijada, José Miguel Ayala Valdez, Oscar Edgardo Mendoza Mejia, Lesly Emidalia |
| author_sort |
Chavez Hernandez, Jose Alexander |
| description |
The volcanic tephra Tierra Blanca Joven (TBJ) covers most of the Metropolitan Area of San Salvador where problems of mass wasting problems occur. To understand its behavior the Mohr-Coulomb, Modified Cam Clay and Hypoplasticity constitutive models were used to simulate consolidation and triaxial tests; looking for the one closer to real laboratory results. The constitutive models are used into finite element software to simulate the behavior of a soil mass (slope stability, bearing capacity etc.). Shear box, drained triaxial and consolidation tests were made in order to obtain the parameters for the models. The soil must be either saturated or dry, otherwise unsaturated properties are needed. After comparing the results of the constitutive model it was observed that none of them display exactly the real behavior observed in the laboratory. Mohr-Coulomb is the model that is used in all the geotechnical studies in El Salvador and it was the model that showed more deficiencies. Hypoplasticity showed good results in the triaxial tests but deviated from reality in the consolidation results. The results indicate that a different constitutive model and lab equipment are necessary (as TBJ is an unsaturated soil) to characterize the behavior of the soils in El Salvador. |
| title |
APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” |
| title_short |
APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” |
| title_full |
APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” |
| title_fullStr |
APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” |
| title_full_unstemmed |
APPLICATION OF CONSTITUTIVE MODELS IN THE VOLCANIC TEPHRA “TIERRA BLANCA JOVEN” |
| title_sort |
application of constitutive models in the volcanic tephra “tierra blanca joven” |
| publisher |
Universidad de Costa Rica |
| publishDate |
2014 |
| url |
https://revistas.ucr.ac.cr/index.php/ingenieria/article/view/12103 |
| work_keys_str_mv |
AT chavezhernandezjosealexander applicationofconstitutivemodelsinthevolcanictephratierrablancajoven AT landaverdequijadajosemiguel applicationofconstitutivemodelsinthevolcanictephratierrablancajoven AT ayalavaldezoscaredgardo applicationofconstitutivemodelsinthevolcanictephratierrablancajoven AT mendozamejialeslyemidalia applicationofconstitutivemodelsinthevolcanictephratierrablancajoven |
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