Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS
Autor(a) principal: | |
---|---|
Data de Publicação: | 2016 |
Tipo de documento: | Dissertação |
Idioma: | por |
Título da fonte: | Biblioteca Digital de Teses e Dissertações do UFSM |
Texto Completo: | http://repositorio.ufsm.br/handle/1/7926 |
Resumo: | It is unusual practice, in national projects of new pavements and restorations, the consideration of viscoelastic behavior and non-linear elastic of materials that compound or will compound the layers of pavement. However, the linear elastic response is a simplification of the actual behavior of the pavements layers, since the materials used in the structure have dependent stiffness of the stress state (granular layers and subgrades) or temperature and load application time (asphalt concrete). Therefore, it was aimed to study the behavior of the pavements structures of three monitored sections in the city of Santa Maria/RS. For this, tests were performed with the equipment FWD applying four different loads in each stake that compounds the extension of the three sections. It was found from deflection basins and backcalculated resilient moduli the nonlinear elastic behavior of granular layers (base and sub-base) of the sections 1 and 2, with resilient modulus directly proportional to the increase of the confining pressure. The subgrades of both sections exhibited varied behavior and can be simplified by the linear elasticity without considerable loss. The same happened to the asphalt concrete of section 1. On the other hand, the coating of the section 2 resulted in resilient modules dependent of the increase of vertical surface tension in the center of the load plate. In relation to section 3, the results related only to deflection measures indicated mostly behavior near of linearity in all evaluated reading distances, except for that carried out under the load application. Sequentially to load pulses, also were determined deflections with the Benkelman beam, aiming to find a local correlation between the results obtained from different equipments. The deflections basins indicated higher values, measured with the beam, in relation to those determined by FWD. Consequently, the resilient modules were higher when determined from the backcalculation of the readings taken with FWD, in relation to Benkelman beam. In parallel, it was verified and quantified the influence of bounding conditions between the layers and correction, total or partial, of deflections basins, depending on the temperature, in backcalculated resilient moduli. It was found that the assignment of total bounding in the interfaces between the layers reduces considerably the backcalculated resilient moduli of granular materials. Regarding to the temperature correction, it is appropriate the determination of the rigidity of the granular materials and the subgrade by performing backcalculation without any adjustment in the field basins. Taking these values as a basis, it was considered appropriate to repeat the iterative procedure, with adjustment of the deflections depending on the temperature in the initial readings, thereby determining the new asphalt concrete resilient moduli. |
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2016-09-082016-09-082016-07-08BUENO, Lucas Dotto. DEFLECTION EVALUATION AND RIGIDITY: A CASE STUDY IN THREE MONITORED SECTIONS IN SANTA MARIA/RS. 2016. 471 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2016.http://repositorio.ufsm.br/handle/1/7926It is unusual practice, in national projects of new pavements and restorations, the consideration of viscoelastic behavior and non-linear elastic of materials that compound or will compound the layers of pavement. However, the linear elastic response is a simplification of the actual behavior of the pavements layers, since the materials used in the structure have dependent stiffness of the stress state (granular layers and subgrades) or temperature and load application time (asphalt concrete). Therefore, it was aimed to study the behavior of the pavements structures of three monitored sections in the city of Santa Maria/RS. For this, tests were performed with the equipment FWD applying four different loads in each stake that compounds the extension of the three sections. It was found from deflection basins and backcalculated resilient moduli the nonlinear elastic behavior of granular layers (base and sub-base) of the sections 1 and 2, with resilient modulus directly proportional to the increase of the confining pressure. The subgrades of both sections exhibited varied behavior and can be simplified by the linear elasticity without considerable loss. The same happened to the asphalt concrete of section 1. On the other hand, the coating of the section 2 resulted in resilient modules dependent of the increase of vertical surface tension in the center of the load plate. In relation to section 3, the results related only to deflection measures indicated mostly behavior near of linearity in all evaluated reading distances, except for that carried out under the load application. Sequentially to load pulses, also were determined deflections with the Benkelman beam, aiming to find a local correlation between the results obtained from different equipments. The deflections basins indicated higher values, measured with the beam, in relation to those determined by FWD. Consequently, the resilient modules were higher when determined from the backcalculation of the readings taken with FWD, in relation to Benkelman beam. In parallel, it was verified and quantified the influence of bounding conditions between the layers and correction, total or partial, of deflections basins, depending on the temperature, in backcalculated resilient moduli. It was found that the assignment of total bounding in the interfaces between the layers reduces considerably the backcalculated resilient moduli of granular materials. Regarding to the temperature correction, it is appropriate the determination of the rigidity of the granular materials and the subgrade by performing backcalculation without any adjustment in the field basins. Taking these values as a basis, it was considered appropriate to repeat the iterative procedure, with adjustment of the deflections depending on the temperature in the initial readings, thereby determining the new asphalt concrete resilient moduli.Não é prática usual, em projetos nacionais de pavimentos novos e restaurações, a consideração do comportamento viscoelástico e elástico não linear dos materiais que constituem, ou que irão constituir as camadas do pavimento. Todavia, a resposta elástica linear é uma simplificação do comportamento real das camadas dos pavimentos, já que os materiais empregados na estrutura possuem rigidez dependente do estado de tensões (camadas granulares e subleitos) ou da temperatura e tempo de aplicação de carga (concretos asfálticos). Em vista disso, buscou-se estudar o comportamento das estruturas dos pavimentos de três trechos monitorados, na cidade de Santa Maria/RS. Para isso, foram realizados ensaios com o equipamento FWD, aplicando quatro diferentes carregamentos em cada estaca que compõe a extensão dos três trechos. Verificou-se, a partir das bacias deflectométricas e dos módulos de resiliência retroanalisados, o comportamento elástico não linear das camadas granulares (base e sub-base) dos Trechos 1 e 2, com módulo de resiliência diretamente proporcional ao incremento da tensão confinante. Os subleitos de dois trechos exibiram comportamento variado, podendo ser simplificados pela elasticidade linear, sem prejuízo considerável. O mesmo aconteceu para o concreto asfáltico do Trecho 1. Já o revestimento do Trecho 2 resultou em módulos resilientes dependentes do incremento da tensão vertical na superfície no centro da placa de carga. Em relação ao Trecho 3, os resultados, referentes apenas às medidas deflectométricas, indicaram comportamento majoritariamente próximo da linearidade em todas as distâncias de leitura avaliadas, com exceção daquela medida abaixo do centro da placa de carga. Sequencialmente aos pulsos de carga, foram determinadas também as deflexões com a viga Benkelman, objetivando encontrar uma correlação local entre os resultados obtidos a partir dos diferentes equipamentos. As bacias deflectométricas indicaram valores superiores, medidos com a viga, em relação àqueles determinados pelo FWD. Consequentemente, os módulos de resiliência foram maiores quando determinados a partir da retroanálise de leituras efetuadas com o FWD, em relação à viga Benkelman. Em paralelo, foi verificada e quantificada a influência das condições de aderência entre as camadas e da correção, total ou parcial, das bacias deflectométricas, em função da temperatura, nos módulos de resiliência retroanalisados. Constatou-se que a atribuição de aderência total nas interfaces entre as camadas reduz consideravelmente os módulos de resiliência retroanalisados dos materiais granulares. Em relação à correção de temperatura, verificou-se adequada a determinação da rigidez dos materiais granulares e subleito mediante a realização da retroanálise sem nenhum ajuste nas bacias de campo. Tomando estes valores como base, julgou-se pertinente a repetição do procedimento iterativo, com ajuste das deflexões em função da temperatura nas leituras iniciais, determinando assim o novo módulo de resiliência do revestimento.Petróleo Brasileiro S/Aapplication/pdfporUniversidade Federal de Santa MariaPrograma de Pós-Graduação em Engenharia CivilUFSMBREngenharia CivilViga BenkelmanRetroanáliseNão linearidadeBenkelman beamFalling weight deflectometerBackcalculationNonlinearityCNPQ::ENGENHARIAS::ENGENHARIA CIVILAvaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RSDeflection evaluation and rigidity: a case study in three monitored sections in Santa Maria/RSinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/masterThesisPereira, Deividi da Silvahttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4704154D4Specht, Luciano Pivotohttp://lattes.cnpq.br/8038412953408618Motta, Laura Maria Goretti dahttp://lattes.cnpq.br/6503451042716161Cervo, Tatiana Cureauhttp://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767432H6http://lattes.cnpq.br/1290062149482053Bueno, Lucas Dotto3001000000034003003003003003000d072c2d-866e-43e2-b694-fb8cf3b78426efd85914-8c97-4023-9d39-d4a4dfa56a0b48d1fdb4-fcef-4b42-a5c0-9e7998240cc5b9751190-f3e8-4a81-bf2e-0d2bdf58c2a8c8b4f026-47ec-4c03-a619-97ddfeefd6bdinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações do UFSMinstname:Universidade Federal de Santa Maria (UFSM)instacron:UFSMORIGINALBUENO, LUCAS DOTTO.pdfapplication/pdf11119119http://repositorio.ufsm.br/bitstream/1/7926/1/BUENO%2c%20LUCAS%20DOTTO.pdf2f5904da5e97b1d5e27416ddccd43e19MD51TEXTBUENO, LUCAS DOTTO.pdf.txtBUENO, LUCAS DOTTO.pdf.txtExtracted texttext/plain1131299http://repositorio.ufsm.br/bitstream/1/7926/2/BUENO%2c%20LUCAS%20DOTTO.pdf.txt1381f350326861e3d0a4e2a07cd79f89MD52THUMBNAILBUENO, LUCAS DOTTO.pdf.jpgBUENO, LUCAS DOTTO.pdf.jpgIM Thumbnailimage/jpeg4806http://repositorio.ufsm.br/bitstream/1/7926/3/BUENO%2c%20LUCAS%20DOTTO.pdf.jpgd7deb5db5fa411fd49d9130c1ab3fdbaMD531/79262022-07-01 11:55:34.331oai:repositorio.ufsm.br:1/7926Biblioteca Digital de Teses e Dissertaçõeshttps://repositorio.ufsm.br/ONGhttps://repositorio.ufsm.br/oai/requestatendimento.sib@ufsm.br||tedebc@gmail.comopendoar:2022-07-01T14:55:34Biblioteca Digital de Teses e Dissertações do UFSM - Universidade Federal de Santa Maria (UFSM)false |
dc.title.por.fl_str_mv |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
dc.title.alternative.eng.fl_str_mv |
Deflection evaluation and rigidity: a case study in three monitored sections in Santa Maria/RS |
title |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
spellingShingle |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS Bueno, Lucas Dotto Viga Benkelman Retroanálise Não linearidade Benkelman beam Falling weight deflectometer Backcalculation Nonlinearity CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
title_short |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
title_full |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
title_fullStr |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
title_full_unstemmed |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
title_sort |
Avaliação deflectométrica e de rigidez: estudo de caso em três trechos monitorados em Santa Maria/RS |
author |
Bueno, Lucas Dotto |
author_facet |
Bueno, Lucas Dotto |
author_role |
author |
dc.contributor.advisor1.fl_str_mv |
Pereira, Deividi da Silva |
dc.contributor.advisor1Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4704154D4 |
dc.contributor.advisor-co1.fl_str_mv |
Specht, Luciano Pivoto |
dc.contributor.advisor-co1Lattes.fl_str_mv |
http://lattes.cnpq.br/8038412953408618 |
dc.contributor.referee1.fl_str_mv |
Motta, Laura Maria Goretti da |
dc.contributor.referee1Lattes.fl_str_mv |
http://lattes.cnpq.br/6503451042716161 |
dc.contributor.referee2.fl_str_mv |
Cervo, Tatiana Cureau |
dc.contributor.referee2Lattes.fl_str_mv |
http://buscatextual.cnpq.br/buscatextual/visualizacv.do?id=K4767432H6 |
dc.contributor.authorLattes.fl_str_mv |
http://lattes.cnpq.br/1290062149482053 |
dc.contributor.author.fl_str_mv |
Bueno, Lucas Dotto |
contributor_str_mv |
Pereira, Deividi da Silva Specht, Luciano Pivoto Motta, Laura Maria Goretti da Cervo, Tatiana Cureau |
dc.subject.por.fl_str_mv |
Viga Benkelman Retroanálise Não linearidade |
topic |
Viga Benkelman Retroanálise Não linearidade Benkelman beam Falling weight deflectometer Backcalculation Nonlinearity CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
dc.subject.eng.fl_str_mv |
Benkelman beam Falling weight deflectometer Backcalculation Nonlinearity |
dc.subject.cnpq.fl_str_mv |
CNPQ::ENGENHARIAS::ENGENHARIA CIVIL |
description |
It is unusual practice, in national projects of new pavements and restorations, the consideration of viscoelastic behavior and non-linear elastic of materials that compound or will compound the layers of pavement. However, the linear elastic response is a simplification of the actual behavior of the pavements layers, since the materials used in the structure have dependent stiffness of the stress state (granular layers and subgrades) or temperature and load application time (asphalt concrete). Therefore, it was aimed to study the behavior of the pavements structures of three monitored sections in the city of Santa Maria/RS. For this, tests were performed with the equipment FWD applying four different loads in each stake that compounds the extension of the three sections. It was found from deflection basins and backcalculated resilient moduli the nonlinear elastic behavior of granular layers (base and sub-base) of the sections 1 and 2, with resilient modulus directly proportional to the increase of the confining pressure. The subgrades of both sections exhibited varied behavior and can be simplified by the linear elasticity without considerable loss. The same happened to the asphalt concrete of section 1. On the other hand, the coating of the section 2 resulted in resilient modules dependent of the increase of vertical surface tension in the center of the load plate. In relation to section 3, the results related only to deflection measures indicated mostly behavior near of linearity in all evaluated reading distances, except for that carried out under the load application. Sequentially to load pulses, also were determined deflections with the Benkelman beam, aiming to find a local correlation between the results obtained from different equipments. The deflections basins indicated higher values, measured with the beam, in relation to those determined by FWD. Consequently, the resilient modules were higher when determined from the backcalculation of the readings taken with FWD, in relation to Benkelman beam. In parallel, it was verified and quantified the influence of bounding conditions between the layers and correction, total or partial, of deflections basins, depending on the temperature, in backcalculated resilient moduli. It was found that the assignment of total bounding in the interfaces between the layers reduces considerably the backcalculated resilient moduli of granular materials. Regarding to the temperature correction, it is appropriate the determination of the rigidity of the granular materials and the subgrade by performing backcalculation without any adjustment in the field basins. Taking these values as a basis, it was considered appropriate to repeat the iterative procedure, with adjustment of the deflections depending on the temperature in the initial readings, thereby determining the new asphalt concrete resilient moduli. |
publishDate |
2016 |
dc.date.accessioned.fl_str_mv |
2016-09-08 |
dc.date.available.fl_str_mv |
2016-09-08 |
dc.date.issued.fl_str_mv |
2016-07-08 |
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 |
BUENO, Lucas Dotto. DEFLECTION EVALUATION AND RIGIDITY: A CASE STUDY IN THREE MONITORED SECTIONS IN SANTA MARIA/RS. 2016. 471 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2016. |
dc.identifier.uri.fl_str_mv |
http://repositorio.ufsm.br/handle/1/7926 |
identifier_str_mv |
BUENO, Lucas Dotto. DEFLECTION EVALUATION AND RIGIDITY: A CASE STUDY IN THREE MONITORED SECTIONS IN SANTA MARIA/RS. 2016. 471 f. Dissertação (Mestrado em Engenharia Civil) - Universidade Federal de Santa Maria, Santa Maria, 2016. |
url |
http://repositorio.ufsm.br/handle/1/7926 |
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por |
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por |
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300100000003 |
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400 300 300 300 300 300 |
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0d072c2d-866e-43e2-b694-fb8cf3b78426 efd85914-8c97-4023-9d39-d4a4dfa56a0b 48d1fdb4-fcef-4b42-a5c0-9e7998240cc5 b9751190-f3e8-4a81-bf2e-0d2bdf58c2a8 c8b4f026-47ec-4c03-a619-97ddfeefd6bd |
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info:eu-repo/semantics/openAccess |
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Universidade Federal de Santa Maria |
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Programa de Pós-Graduação em Engenharia Civil |
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UFSM |
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BR |
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Engenharia Civil |
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Universidade Federal de Santa Maria |
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