Análise do comportamento de torres de aço estaiadas sob a ação do vento
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Repositório Institucional da UFU |
Texto Completo: | https://repositorio.ufu.br/handle/123456789/14812 |
Resumo: | The main objective of this work is to analyze the behavior of guyed towers of different heights, subject to the following solicitations: wind loads, dead weight, and prestress of the stays. The study was done in order to better understand the influence of some static and dynamic parameters in these structures. Guyed towers are structures that are utilized in several applications, such as, for instance, transmission towers. Besides determining the best quantity, disposition, and inclination angle of the stays for these systems, it was verified the influence of different methods used to calculate wind loads in the following results: Von Mises stresses, forces on the stays, and the resulting displacement. The methods used were the ones mentioned in the Brazilian Standards NBR6123/1988, and in order to calculate the wind loads acting on the tower, algorithms in MATLAB® were implemented. The tower masts were designed using the admissible stress method. For the three-dimensional models in finite elements and their analysis, were elaborated APDLs (ANSYS Parametric Design Language) the structural systems, in such away to optimize the time spent on the modeling and to reduce possible source of uncertainty. The results analysis consists in evaluating the sensitivity of the design variables in terms of: Von Mises stresses, forces on the stays, and resulting displacements. Also, modal analyses were done to verify the influence of the support conditions on the base of the mast on the natural frequencies of the structure. The obtained results showed that the inclination angle of the stays with respect to the mast can be reduced, propitiating an area reduction occupied by the tower. It was also observed, that the resulting displacements of these structures are more sensitive to the studied parameters than the stresses and the forces on the stays. The studies done and the obtained results show a better understanding of the structural and the dynamic behaviors of this type of structure. |
id |
UFU_e230e25b0c3e7b67310f7a95a04cc7bf |
---|---|
oai_identifier_str |
oai:repositorio.ufu.br:123456789/14812 |
network_acronym_str |
UFU |
network_name_str |
Repositório Institucional da UFU |
repository_id_str |
|
spelling |
2016-06-22T18:40:01Z2008-12-022016-06-22T18:40:01Z2008-08-14GUIMARÃES, Eduardo Henrique. Analysis of the behavior of steel guyed towers under the action of wind. 2008. 215 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2008.https://repositorio.ufu.br/handle/123456789/14812The main objective of this work is to analyze the behavior of guyed towers of different heights, subject to the following solicitations: wind loads, dead weight, and prestress of the stays. The study was done in order to better understand the influence of some static and dynamic parameters in these structures. Guyed towers are structures that are utilized in several applications, such as, for instance, transmission towers. Besides determining the best quantity, disposition, and inclination angle of the stays for these systems, it was verified the influence of different methods used to calculate wind loads in the following results: Von Mises stresses, forces on the stays, and the resulting displacement. The methods used were the ones mentioned in the Brazilian Standards NBR6123/1988, and in order to calculate the wind loads acting on the tower, algorithms in MATLAB® were implemented. The tower masts were designed using the admissible stress method. For the three-dimensional models in finite elements and their analysis, were elaborated APDLs (ANSYS Parametric Design Language) the structural systems, in such away to optimize the time spent on the modeling and to reduce possible source of uncertainty. The results analysis consists in evaluating the sensitivity of the design variables in terms of: Von Mises stresses, forces on the stays, and resulting displacements. Also, modal analyses were done to verify the influence of the support conditions on the base of the mast on the natural frequencies of the structure. The obtained results showed that the inclination angle of the stays with respect to the mast can be reduced, propitiating an area reduction occupied by the tower. It was also observed, that the resulting displacements of these structures are more sensitive to the studied parameters than the stresses and the forces on the stays. The studies done and the obtained results show a better understanding of the structural and the dynamic behaviors of this type of structure.Este trabalho tem por objetivo analisar o comportamento de torres estaiadas de diferentes alturas. Estas estão sujeitas as solicitações de vento, peso próprio e pré-tensão nos estais. Foi feito um estudo com a finalidade de conhecer a influência de determinados parâmetros na resposta estática e dinâmica dessas estruturas. Torres estaiadas são estruturas utilizadas em diversas aplicações, como por exemplo, em torres de transmissão. Além, de determinar a quantidade, disposição e ângulo de inclinação ótimos dos estais para esses sistemas, verificouse ainda, a influência dos modelos de cálculo das solicitações de vento, sugeridos pela NBR 6123/1988, nas tensões de Von Mises, esforços nos estais e deslocamentos resultantes nas estruturas. Os mastros das torres foram dimensionados utilizando o método das tensões admissíveis. As solicitações advindas da atuação do vento nas torres foram obtidas através de algoritmos implementados em MATLAB®, utilizando os vários modelos de cálculo apresentados na norma brasileira. Para modelagem tridimensional em elementos finitos e realização das análises, foram elaboradas rotinas em linguagem APDLs (ANSYS Parametric Design Language) para os sistemas estruturais, de maneira a parametrizar os modelos e otimizar o tempo gasto na modelagem. Foi realizada uma análise para avaliar a sensibilidade de determinadas variáveis de projeto tais como, quantidade, posicionamento e ângulo de inclinação dos estais, em termos de tensões de Von Mises, esforços nos estais e deslocamentos resultantes. Ademais, foram realizadas análises modais para verificar a influência das condições de contorno da base do mastro sobre as freqüências naturais da estrutura. Os resultados obtidos mostraram que o ângulo de inclinação dos estais com relação ao mastro pode ser reduzido, propiciando uma redução da área ocupada pela torre. Observouse também, que os deslocamentos resultantes dessas estruturas são mais sensíveis aos parâmetros estudados do que as tensões e os esforços nos estais. Os estudos realizados e os resultados obtidos levam a uma melhor compreensão do comportamento estrutural e dinâmico desse tipo de estrutura.Conselho Nacional de Desenvolvimento Científico e TecnológicoMestre em Engenharia Mecânicaapplication/pdfporUniversidade Federal de UberlândiaPrograma de Pós-graduação em Engenharia MecânicaUFUBREngenhariasEstruturas de aço estaiadasAnálise estruturalElementos finitosAnálise modalTorres de transmissãoAço - EstruturasTeoria das estruturasElementos finitos - Análise modalSteel guyed structuresStructural analyzeFinite elementsModal analyzeTransmission towersCNPQ::ENGENHARIAS::ENGENHARIA MECANICAAnálise do comportamento de torres de aço estaiadas sob a ação do ventoAnalysis of the behavior of steel guyed towers under the action of windinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisClapis, Antonio Pedrohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4707505A0Oliveira, Sonia Aparecida Goulart dehttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785944D1Rade, Domingos Alveshttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781681T7Greco, Marcelohttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767721Y6http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4715916J2Guimarães, Eduardo Henrique81756159info:eu-repo/semantics/openAccessreponame:Repositório Institucional da UFUinstname:Universidade Federal de Uberlândia (UFU)instacron:UFUTHUMBNAILEduardo.pdf.jpgEduardo.pdf.jpgGenerated Thumbnailimage/jpeg1418https://repositorio.ufu.br/bitstream/123456789/14812/3/Eduardo.pdf.jpgb1d57aa6eeea2a888786efaaa4f68cffMD53ORIGINALEduardo.pdfapplication/pdf7401025https://repositorio.ufu.br/bitstream/123456789/14812/1/Eduardo.pdffbfc5c7fb9203ae2f8a4063ae92a98e7MD51TEXTEduardo.pdf.txtEduardo.pdf.txtExtracted texttext/plain290072https://repositorio.ufu.br/bitstream/123456789/14812/2/Eduardo.pdf.txtb093e19ae4e8c6e275ccdb4553a09f77MD52123456789/148122021-09-24 12:19:03.212oai:repositorio.ufu.br:123456789/14812Repositório InstitucionalONGhttp://repositorio.ufu.br/oai/requestdiinf@dirbi.ufu.bropendoar:2021-09-24T15:19:03Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU)false |
dc.title.por.fl_str_mv |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
dc.title.alternative.eng.fl_str_mv |
Analysis of the behavior of steel guyed towers under the action of wind |
title |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
spellingShingle |
Análise do comportamento de torres de aço estaiadas sob a ação do vento Guimarães, Eduardo Henrique Estruturas de aço estaiadas Análise estrutural Elementos finitos Análise modal Torres de transmissão Aço - Estruturas Teoria das estruturas Elementos finitos - Análise modal Steel guyed structures Structural analyze Finite elements Modal analyze Transmission towers CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
title_short |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
title_full |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
title_fullStr |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
title_full_unstemmed |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
title_sort |
Análise do comportamento de torres de aço estaiadas sob a ação do vento |
author |
Guimarães, Eduardo Henrique |
author_facet |
Guimarães, Eduardo Henrique |
author_role |
author |
dc.contributor.advisor-co1.fl_str_mv |
Clapis, Antonio Pedro |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4707505A0 |
dc.contributor.advisor1.fl_str_mv |
Oliveira, Sonia Aparecida Goulart de |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4785944D1 |
dc.contributor.referee1.fl_str_mv |
Rade, Domingos Alves |
dc.contributor.referee1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4781681T7 |
dc.contributor.referee2.fl_str_mv |
Greco, Marcelo |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767721Y6 |
dc.contributor.authorLattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4715916J2 |
dc.contributor.author.fl_str_mv |
Guimarães, Eduardo Henrique |
contributor_str_mv |
Clapis, Antonio Pedro Oliveira, Sonia Aparecida Goulart de Rade, Domingos Alves Greco, Marcelo |
dc.subject.por.fl_str_mv |
Estruturas de aço estaiadas Análise estrutural Elementos finitos Análise modal Torres de transmissão Aço - Estruturas Teoria das estruturas Elementos finitos - Análise modal |
topic |
Estruturas de aço estaiadas Análise estrutural Elementos finitos Análise modal Torres de transmissão Aço - Estruturas Teoria das estruturas Elementos finitos - Análise modal Steel guyed structures Structural analyze Finite elements Modal analyze Transmission towers CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
dc.subject.eng.fl_str_mv |
Steel guyed structures Structural analyze Finite elements Modal analyze Transmission towers |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA MECANICA |
description |
The main objective of this work is to analyze the behavior of guyed towers of different heights, subject to the following solicitations: wind loads, dead weight, and prestress of the stays. The study was done in order to better understand the influence of some static and dynamic parameters in these structures. Guyed towers are structures that are utilized in several applications, such as, for instance, transmission towers. Besides determining the best quantity, disposition, and inclination angle of the stays for these systems, it was verified the influence of different methods used to calculate wind loads in the following results: Von Mises stresses, forces on the stays, and the resulting displacement. The methods used were the ones mentioned in the Brazilian Standards NBR6123/1988, and in order to calculate the wind loads acting on the tower, algorithms in MATLAB® were implemented. The tower masts were designed using the admissible stress method. For the three-dimensional models in finite elements and their analysis, were elaborated APDLs (ANSYS Parametric Design Language) the structural systems, in such away to optimize the time spent on the modeling and to reduce possible source of uncertainty. The results analysis consists in evaluating the sensitivity of the design variables in terms of: Von Mises stresses, forces on the stays, and resulting displacements. Also, modal analyses were done to verify the influence of the support conditions on the base of the mast on the natural frequencies of the structure. The obtained results showed that the inclination angle of the stays with respect to the mast can be reduced, propitiating an area reduction occupied by the tower. It was also observed, that the resulting displacements of these structures are more sensitive to the studied parameters than the stresses and the forces on the stays. The studies done and the obtained results show a better understanding of the structural and the dynamic behaviors of this type of structure. |
publishDate |
2008 |
dc.date.available.fl_str_mv |
2008-12-02 2016-06-22T18:40:01Z |
dc.date.issued.fl_str_mv |
2008-08-14 |
dc.date.accessioned.fl_str_mv |
2016-06-22T18:40:01Z |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/masterThesis |
format |
masterThesis |
status_str |
publishedVersion |
dc.identifier.citation.fl_str_mv |
GUIMARÃES, Eduardo Henrique. Analysis of the behavior of steel guyed towers under the action of wind. 2008. 215 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2008. |
dc.identifier.uri.fl_str_mv |
https://repositorio.ufu.br/handle/123456789/14812 |
identifier_str_mv |
GUIMARÃES, Eduardo Henrique. Analysis of the behavior of steel guyed towers under the action of wind. 2008. 215 f. Dissertação (Mestrado em Engenharias) - Universidade Federal de Uberlândia, Uberlândia, 2008. |
url |
https://repositorio.ufu.br/handle/123456789/14812 |
dc.language.iso.fl_str_mv |
por |
language |
por |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
application/pdf |
dc.publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
dc.publisher.program.fl_str_mv |
Programa de Pós-graduação em Engenharia Mecânica |
dc.publisher.initials.fl_str_mv |
UFU |
dc.publisher.country.fl_str_mv |
BR |
dc.publisher.department.fl_str_mv |
Engenharias |
publisher.none.fl_str_mv |
Universidade Federal de Uberlândia |
dc.source.none.fl_str_mv |
reponame:Repositório Institucional da UFU instname:Universidade Federal de Uberlândia (UFU) instacron:UFU |
instname_str |
Universidade Federal de Uberlândia (UFU) |
instacron_str |
UFU |
institution |
UFU |
reponame_str |
Repositório Institucional da UFU |
collection |
Repositório Institucional da UFU |
bitstream.url.fl_str_mv |
https://repositorio.ufu.br/bitstream/123456789/14812/3/Eduardo.pdf.jpg https://repositorio.ufu.br/bitstream/123456789/14812/1/Eduardo.pdf https://repositorio.ufu.br/bitstream/123456789/14812/2/Eduardo.pdf.txt |
bitstream.checksum.fl_str_mv |
b1d57aa6eeea2a888786efaaa4f68cff fbfc5c7fb9203ae2f8a4063ae92a98e7 b093e19ae4e8c6e275ccdb4553a09f77 |
bitstream.checksumAlgorithm.fl_str_mv |
MD5 MD5 MD5 |
repository.name.fl_str_mv |
Repositório Institucional da UFU - Universidade Federal de Uberlândia (UFU) |
repository.mail.fl_str_mv |
diinf@dirbi.ufu.br |
_version_ |
1802110314079059968 |