Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks
The dynamic response results of a vertical cylindrical steel tank located in the south-eastern zone of the Republic of Cuba are analyzed. The tank was subjected to horizontal seismic excitation from the development of different calculation models, taking as reference the API 650 design code of 2013...
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| Format: | Online |
| Language: | eng |
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Universidad Pedagógica y Tecnológica de Colombia
2021
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| Online Access: | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/12636 |
| _version_ | 1801706091933859840 |
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| author | Saint-Felix-López, Nelson Álvarez-Deulofeu, Eduardo-Rafael Candebat-Sánchez, Dario |
| author_facet | Saint-Felix-López, Nelson Álvarez-Deulofeu, Eduardo-Rafael Candebat-Sánchez, Dario |
| author_sort | Saint-Felix-López, Nelson |
| collection | OJS |
| description | The dynamic response results of a vertical cylindrical steel tank located in the south-eastern zone of the Republic of Cuba are analyzed. The tank was subjected to horizontal seismic excitation from the development of different calculation models, taking as reference the API 650 design code of 2013 and the parameters that characterize the seismic hazard of the Republic of Cuba established in the design code NC 46: 2017. In the investigation, two mathematical calculation models were implemented: a simplified one based on the equivalent mechanical system described by Housner in 1963 and a complex model, which integrates the finite element technique and the spectral modal analysis method with the help of the professional software SAP2000, v.22.0. When analyzing the research results, it was concluded that (1) the values of periods in tanks are high due to the fluctuations of the stored fluid; (2) there is an agreement between the analytical method specified in API. 650 and computational models based on finite elements; (3) the model developed from finite elements corroborates the existence of deformations in the lower part of the tank walls, which is known as "elephant foot" and "diamond point", as well as buckling in the upper part of the sidewall of the tank caused by the effect of the waves; and (4) according to the aspect ratios considered (H/R), in which the radius tank is constant, the value of the convective period decreases as said aspect ratio decreases; becoming the less dominant impulsive mode. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-12636 |
| institution | Revista Facultad de Ingeniería |
| language | eng |
| publishDate | 2021 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-126362022-06-15T15:51:05Z Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks Análisis sísmico espectral de tanques cilíndricos verticales de acero Saint-Felix-López, Nelson Álvarez-Deulofeu, Eduardo-Rafael Candebat-Sánchez, Dario convective cylindrical tanks finite element impulsive response spectrum convectivo elemento finito espectro de respuesta impulsivo tanques cilíndricos The dynamic response results of a vertical cylindrical steel tank located in the south-eastern zone of the Republic of Cuba are analyzed. The tank was subjected to horizontal seismic excitation from the development of different calculation models, taking as reference the API 650 design code of 2013 and the parameters that characterize the seismic hazard of the Republic of Cuba established in the design code NC 46: 2017. In the investigation, two mathematical calculation models were implemented: a simplified one based on the equivalent mechanical system described by Housner in 1963 and a complex model, which integrates the finite element technique and the spectral modal analysis method with the help of the professional software SAP2000, v.22.0. When analyzing the research results, it was concluded that (1) the values of periods in tanks are high due to the fluctuations of the stored fluid; (2) there is an agreement between the analytical method specified in API. 650 and computational models based on finite elements; (3) the model developed from finite elements corroborates the existence of deformations in the lower part of the tank walls, which is known as "elephant foot" and "diamond point", as well as buckling in the upper part of the sidewall of the tank caused by the effect of the waves; and (4) according to the aspect ratios considered (H/R), in which the radius tank is constant, the value of the convective period decreases as said aspect ratio decreases; becoming the less dominant impulsive mode. Se analizan los resultados de la respuesta dinámica de un tanque cilíndrico de acero, ubicado en la zona sur-oriental de Cuba; sometido a excitación sísmica horizontal, a partir del desarrollo de diferentes modelos de cálculo; tomando como referencia el código de diseño API 650 del 2013 y los parámetros que caracterizan el peligro sísmico de la República de Cuba, establecidos en la NC 46:2017. En la investigación se desarrollan dos modelos matemáticos de cálculo; uno simplificado basado en el sistema mecánico equivalente descrito por Housner en 1963 y otro complejo, el cual integra la técnica de los elementos finitos y el método del análisis modal espectral, con la ayuda del software profesional SAP2000, v.22.0 Al analizar los resultados se concluye que, (1) los valores de períodos en tanques son elevados debido a las oscilaciones del fluido almacenado, (2) existe concordancia entre el método analítico, especificado en API. 650, y los modelos computacionales basados en elementos finitos, (3) el modelo desarrollado a partir de elementos finitos, corrobora la existencia de deformaciones en la parte baja de las paredes del tanque, conocidas como “pata de elefante” y “punta de diamante”, así como, pandeo en la parte superior de la pared lateral del tanque, causado por el efecto del oleaje y (4) de acuerdo con las relaciones de aspecto tenidas en cuenta (H/R), en las cuales el radio es constante, el período del modo convectivo disminuye su valor, en la medida que disminuye dicha relación de aspecto; tornándose el modo impulsivo menos dominante. Universidad Pedagógica y Tecnológica de Colombia 2021-08-02 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf text/xml https://revistas.uptc.edu.co/index.php/ingenieria/article/view/12636 10.19053/01211129.v30.n57.2021.12636 Revista Facultad de Ingeniería; Vol. 30 No. 57 (2021): July-September 2021 (Continuous Publication); e12636 Revista Facultad de Ingeniería; Vol. 30 Núm. 57 (2021): Julio-Septiembre 2021 (Publicación Continua); e12636 2357-5328 0121-1129 eng https://revistas.uptc.edu.co/index.php/ingenieria/article/view/12636/11067 https://revistas.uptc.edu.co/index.php/ingenieria/article/view/12636/11149 Copyright (c) 2021 Nelson Saint-Felix-López, Eduardo-Rafael Álvarez-Deulofeu, Dario Candebat-Sánchez http://creativecommons.org/licenses/by/4.0 |
| spellingShingle | convective cylindrical tanks finite element impulsive response spectrum convectivo elemento finito espectro de respuesta impulsivo tanques cilíndricos Saint-Felix-López, Nelson Álvarez-Deulofeu, Eduardo-Rafael Candebat-Sánchez, Dario Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks |
| title | Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks |
| title_alt | Análisis sísmico espectral de tanques cilíndricos verticales de acero |
| title_full | Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks |
| title_fullStr | Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks |
| title_full_unstemmed | Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks |
| title_short | Spectral Seismic Analysis of Vertical Cylindrical Steel Tanks |
| title_sort | spectral seismic analysis of vertical cylindrical steel tanks |
| topic | convective cylindrical tanks finite element impulsive response spectrum convectivo elemento finito espectro de respuesta impulsivo tanques cilíndricos |
| topic_facet | convective cylindrical tanks finite element impulsive response spectrum convectivo elemento finito espectro de respuesta impulsivo tanques cilíndricos |
| url | https://revistas.uptc.edu.co/index.php/ingenieria/article/view/12636 |
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