VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO
ABSTRACT The grain flow is a dynamic phenomenon of high non-linearity, responsible for the occurrence of a high index of structural problems in silos, assuming particular interest in Brazil because the country does not have a standard of design of these structures. In order to determine the transfer...
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| Format: | Article |
| Language: | English |
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Sociedade Brasileira de Engenharia Agrícola
2018-08-01
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| Series: | Engenharia Agrícola |
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| Online Access: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400498&tlng=en |
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| author | Marivone Z. Fank José W. B. do Nascimento Décio L. Cardoso Ariadne S. Meira Fábio L. Willrich |
| author_facet | Marivone Z. Fank José W. B. do Nascimento Décio L. Cardoso Ariadne S. Meira Fábio L. Willrich |
| author_sort | Marivone Z. Fank |
| collection | DOAJ |
| description | ABSTRACT The grain flow is a dynamic phenomenon of high non-linearity, responsible for the occurrence of a high index of structural problems in silos, assuming particular interest in Brazil because the country does not have a standard of design of these structures. In order to determine the transfer of loads to the foundations, a silo in true magnitude was instrumented through pressure cells in the reinforced concrete slab of the bottom and through load cells under two of its column. The experiment was conducted during the period from December 2016 to February 2017 in Entre Rios do Oeste-PR. The profiles of vertical and the compression friction pressures were obtained during the loading, storage and unloading phases of corn grains. The vertical pressure distribution in the silo bottom was shown to be variable along its radius, in accordance with the formulation of the AS 3774 standard, an alternative to the simplified uniform distribution hypothesis prescribed by the EN 1991-4 and ANSI/ASAE EP433 standards. We also observed experimentally the non-occurrence of overpressure at the unloading of the silo under analysis. The load transfer coefficient to the column was 0.35, being that the ANSI/ASAE EP433, EN 1991-4 and AS 3774 standards increased this transfer by 6.57%, 35.91% and 75.03% respectively, reflecting the great divergence between these prescriptions. |
| first_indexed | 2024-04-11T16:38:15Z |
| format | Article |
| id | doaj.art-5187bfab8bcf4016a11f9087bfc5a511 |
| institution | Directory Open Access Journal |
| issn | 0100-6916 |
| language | English |
| last_indexed | 2024-04-11T16:38:15Z |
| publishDate | 2018-08-01 |
| publisher | Sociedade Brasileira de Engenharia Agrícola |
| record_format | Article |
| series | Engenharia Agrícola |
| spelling | doaj.art-5187bfab8bcf4016a11f9087bfc5a5112022-12-22T04:13:44ZengSociedade Brasileira de Engenharia AgrícolaEngenharia Agrícola0100-69162018-08-0138449850310.1590/1809-4430-eng.agric.v38n4p498-503/2018VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILOMarivone Z. FankJosé W. B. do NascimentoDécio L. CardosoAriadne S. MeiraFábio L. WillrichABSTRACT The grain flow is a dynamic phenomenon of high non-linearity, responsible for the occurrence of a high index of structural problems in silos, assuming particular interest in Brazil because the country does not have a standard of design of these structures. In order to determine the transfer of loads to the foundations, a silo in true magnitude was instrumented through pressure cells in the reinforced concrete slab of the bottom and through load cells under two of its column. The experiment was conducted during the period from December 2016 to February 2017 in Entre Rios do Oeste-PR. The profiles of vertical and the compression friction pressures were obtained during the loading, storage and unloading phases of corn grains. The vertical pressure distribution in the silo bottom was shown to be variable along its radius, in accordance with the formulation of the AS 3774 standard, an alternative to the simplified uniform distribution hypothesis prescribed by the EN 1991-4 and ANSI/ASAE EP433 standards. We also observed experimentally the non-occurrence of overpressure at the unloading of the silo under analysis. The load transfer coefficient to the column was 0.35, being that the ANSI/ASAE EP433, EN 1991-4 and AS 3774 standards increased this transfer by 6.57%, 35.91% and 75.03% respectively, reflecting the great divergence between these prescriptions.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400498&tlng=enmetal silosgrain storageinstrumentation |
| spellingShingle | Marivone Z. Fank José W. B. do Nascimento Décio L. Cardoso Ariadne S. Meira Fábio L. Willrich VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO Engenharia Agrícola metal silos grain storage instrumentation |
| title | VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO |
| title_full | VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO |
| title_fullStr | VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO |
| title_full_unstemmed | VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO |
| title_short | VERTICAL PRESSURES AND COMPRESSIVE FRICTION FORCE IN A LARGE SILO |
| title_sort | vertical pressures and compressive friction force in a large silo |
| topic | metal silos grain storage instrumentation |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400498&tlng=en |
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