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Rozprawy doktorskie na temat „Tubular steel structures”

Autor: Grafiati

Data publikacji: 4 czerwca 2021

Data aktualizacji: 23 lutego 2023

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1

Mashiri, Fidelis Rutendo 1968. "Thin-walled tubular connections under fatigue loading." Monash University, Dept. of Civil Engineering, 2001. http://arrow.monash.edu.au/hdl/1959.1/8784.

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2

Branco, Renato Henrique Ferreira. "Automação de projetos de estruturas planas treliçadas tubulares de aço com estudo comparativo entre treliças constituidas por barras com ligações rotuladas e rigidas." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257810.

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Orientador: João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-09T15:12:35Z (GMT). No. of bitstreams: 1 Branco_RenatoHenriqueFerreira_M.pdf: 3986850 bytes, checksum: 072a11037e6f4092c809ec3cc6180f9e (MD5) Previous issue date: 2006<br>Resumo: Este trabalho tem como objetivo apresentar análises comparativas entre estruturas metálicas treliçadas tubulares planas considerando as vinculações entre as barras como rotuladas e estruturas metálicas treliçadas tubulare

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3

Feng, Ran. "Design of cold-formed stainless steel tubular joints." Click to view the E-thesis via HKUTO, 2008. http://sunzi.lib.hku.hk/hkuto/record/B41290628.

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Zhou, Feng. "Web crippling of cold-formed stainless steel tubular sections." Click to view the E-thesis via HKUTO, 2006. http://sunzi.lib.hku.hk/hkuto/record/B37228316.

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5

Chao, Min, of Western Sydney Hawkesbury University, Faculty of Science and Technology, and School of Construction and Building Sciences. "The design and behaviour of concrete filled steel tubular beam-columns." THESIS_FST_CBS_Chao_M.xml, 2000. http://handle.uws.edu.au:8081/1959.7/92.

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Concrete filled steel tubular (CFST) columns are widely used in building and infrastructure projects throughout the world.Compared with other form of construction CFST columns offer superior structural performance and speed and ease of construction.Design procedures and recommendations provided in most of the design codes are often tedious and complex. There have been attempts to simplify the design procedure by providing a simplified expression to predict the capacity of a CFST under a general loading condition.In this thesis a rigorous analysis procedure was presented for the analysis of CFS

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6

Khamisi, Ali. "Stability of Tubular Steel Structures : Buckling and Lateral Torsional Buckling." Thesis, Université de Lorraine, 2016. http://www.theses.fr/2016LORR0172.

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Ce sujet est d’actualité suite à une évolution rapide des types de conception de structures élancées utilisées dans les installations provisoires. C’est seulement depuis une vingtaine d’années que ces structures sont préfabriquées en cadres multidirectionnels (de sections tubulaires en acier ou en aluminium). Ces structures sont légères et leur stabilité réside seulement dans les raideurs internes au niveau des files de montants et au niveau horizontal par les planchers ainsi que dans les liaisons avec l’ouvrage. Ce travail concerne l’étude des instabilités (flambement-déversement) en tenant c

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7

Nezamian, Abolghasem 1968. "Bond strength of concrete plugs embedded in tubular steel piles." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/5601.

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8

Feng, Ran, and 馮然. "Design of cold-formed stainless steel tubular joints." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2008. http://hub.hku.hk/bib/B41290628.

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9

Hou, Chien-ann. "Modeling and control of welding distortion in tubular frame structures /." The Ohio State University, 1986. http://rave.ohiolink.edu/etdc/view?acc_num=osu1487265143145759.

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10

Lui, Wing Man. "Design of cold-formed high strength stainless steel tubular columns and beam-columns /." View abstract or full-text, 2004. http://library.ust.hk/cgi/db/thesis.pl?CIVL%202004%20LUI.

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Thesis (M. Phil.)--Hong Kong University of Science and Technology, 2004.<br>Includes bibliographical references (leaves 149-154). Also available in electronic version. Access restricted to campus users.

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11

Zhou, Feng, and 周鋒. "Web crippling of cold-formed stainless steel tubular sections." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2006. http://hub.hku.hk/bib/B37228316.

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12

Chao, Min. "The design and behaviour of concrete filled steel tubular beam-columns." Thesis, View thesis View thesis, 2000. http://handle.uws.edu.au:8081/1959.7/92.

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Concrete filled steel tubular (CFST) columns are widely used in building and infrastructure projects throughout the world.Compared with other form of construction CFST columns offer superior structural performance and speed and ease of construction.Design procedures and recommendations provided in most of the design codes are often tedious and complex. There have been attempts to simplify the design procedure by providing a simplified expression to predict the capacity of a CFST under a general loading condition.In this thesis a rigorous analysis procedure was presented for the analysis of CFS

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13

DOTTORE, ALEXANDRO. "FINITE ELEMENT FATIGUE ASSESSMENT OF STEEL TUBULAR JOINTS IN OFFSHORE STRUCTURES." Doctoral thesis, Università degli studi di Pavia, 2022. http://hdl.handle.net/11571/1460427.

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Background: Fatigue analysis is a very complex process, which is still today not fully under-stood. This thesis numerically investigates the advantages and limitations of the employment of the Finite Element (FE) method in actual standard fatigue design procedure. Two studies are conducted to validate the SCF calculation and the application of Hot-Spot Stress (HSS) method to fatigue design. Study I: The Stress Concentration Factor is a magnification factor introduced to account for geometrical or material discontinuities in structural joints. In these locations the stress may reach values sev

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14

DOTTORE, ALEXANDRO. "FINITE ELEMENT FATIGUE ASSESSMENT OF STEEL TUBULAR JOINTS IN OFFSHORE STRUCTURES." Doctoral thesis, Università degli studi di Pavia, 2022. http://hdl.handle.net/11571/1460428.

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Background: Fatigue analysis is a very complex process, which is still today not fully under-stood. This thesis numerically investigates the advantages and limitations of the employment of the Finite Element (FE) method in actual standard fatigue design procedure. Two studies are conducted to validate the SCF calculation and the application of Hot-Spot Stress (HSS) method to fatigue design. Study I: The Stress Concentration Factor is a magnification factor introduced to account for geometrical or material discontinuities in structural joints. In these locations the stress may reach values sev

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15

DOTTORE, ALEXANDRO. "FINITE ELEMENT FATIGUE ASSESSMENT OF STEEL TUBULAR JOINTS IN OFFSHORE STRUCTURES." Doctoral thesis, Università degli studi di Pavia, 2022. http://hdl.handle.net/11571/1460432.

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Background: Fatigue analysis is a very complex process, which is still today not fully under-stood. This thesis numerically investigates the advantages and limitations of the employment of the Finite Element (FE) method in actual standard fatigue design procedure. Two studies are conducted to validate the SCF calculation and the application of Hot-Spot Stress (HSS) method to fatigue design. Study I: The Stress Concentration Factor is a magnification factor introduced to account for geometrical or material discontinuities in structural joints. In these locations the stress may reach values sev

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16

Marshall, Peter William. "Design of welded tubular connections basis and use of AWS code provisions /." Amsterdam ; New York : Elsevier, 1992. http://catalog.hathitrust.org/api/volumes/oclc/26653636.html.

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17

Samarra, Fabio Aurelio. "Estudo numerico-experimental de treliças tubulares planas para coberturas padronizadas para grandes vãos." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257807.

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Orientadores: João Alberto Venegas Requena, Newton de Oliveira Pinto Junior<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-10T14:00:01Z (GMT). No. of bitstreams: 1 Samarra_FabioAurelio_M.pdf: 11582111 bytes, checksum: 1ae70c924a9b1c83b6660980e776a855 (MD5) Previous issue date: 2007<br>Resumo: O desenvolvimento de sistemas de cobertura pré-fabricados para grandes vãos, que tenham como características menor tempo de projeto, fabricação e montagem, aliado ao custo competitivo e fator es

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18

Dong, Chunxiao, and 董春宵. "Uni-axial behaviour of concrete-filled-steel-tubular columns with external confinement." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2013. http://hdl.handle.net/10722/195975.

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This thesis studies the uni-axial behaviour of circular double-skinned concrete-filled-steel-tubular (CFST) columns with external confinement in form of external steel rings. Particular attention is paid to the experimental behaviour of double-skinned CFST columns and theoretical model for evaluating the loadcarrying capacity of un- and ring-confined double-skinned CFST columns. Experimental studies on circular double-skinned CFST columns with various spacing of confinement, concrete strength and hollow ratio were conducted and discussed comprehensively. The mechanical properties of double-sk

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19

Islam, S. M. Zahurul. "Strengthening of aluminium and stainless steel tubular sections with fibre-reinforced polymer." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B47752865.

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Strengthening of aluminium and stainless steel structural tubular sections using adhesive bonded fibre-reinforced polymer (FRP) subjected to web crippling has been investigated. Aluminium and stainless steel tubular sections may experience web crippling failure due to local concentrated loads or reactions. The web crippling strength can be enhanced by strengthening the webs of the sections in localized regions. The current international specifications of aluminium and stainless steel structures do not provide web crippling design rules for strengthening of tubular sections. Therefore,

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20

Vieira, Rodrigo Cuberos 1983. "Estudo comparativo entre terças de aço, convencionais em vigas, em treliças planas e em treliças multiplanares." [s.n.], 2009. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257811.

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Orientador: João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-14T15:27:42Z (GMT). No. of bitstreams: 1 Vieira_RodrigoCuberos_M.pdf: 3840052 bytes, checksum: b4860daa77b57af17db9c3c0885bb512 (MD5) Previous issue date: 2009<br>Resumo: As coberturas metálicas são muito utilizadas em edificações que necessitam de grandes espaços internos livres e possuem um prazo de execução pequeno, como por exemplo, galpões comerciais, industriais e centros de armazenamento e

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21

Ali, Muhammad. "Experimental and Numerical Study of Ductile Metal Auxetic Tubular Structures." Thesis, Virginia Tech, 2020. http://hdl.handle.net/10919/99143.

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Methods to mitigate the risk posed by seismic and blast loads to structures are of high interest to researchers. Auxetic structures are a new class of metamaterials that exhibit counterintuitive negative Poisson's ratio (NPR) behavior based on their geometric configuration. Cellular auxetics are light-weight and cost-effective materials that have the potential to demonstrate high strength and resilience under axial forces. Existing research on metallic auxetics is scarce and based mostly on analytical studies. Apparent NPR behavior of auxetics has also been linked to enhanced energy absorbing

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22

Luo, Lie, and 罗冽. "Uni-axial behavior of normal-strength concrete filled steel tubular columns with external confinement." Thesis, The University of Hong Kong (Pokfulam, Hong Kong), 2012. http://hub.hku.hk/bib/B49618210.

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This thesis proposes two forms of external confinement for concrete filled steel tubular (CFST) columns. The confinement efficiency is studied by examining the axial strength enhancement and ductility improvement of the CFST columns with external confinement. Due to the heavy demand of confining steel to restore the column ductility in seismic regions, it is more efficient to confine these columns by hollow steel tube to form CFST column. Compared with transverse reinforcing steel, steel tube provides a stronger and more uniform confining pressure to the concrete core, and reduces the stee

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23

Chao, Min. "The design and behaviour of concrete filled steel tubular beam-columns /." View thesis View thesis, 2000. http://library.uws.edu.au/adt-NUWS/public/adt-NUWS20030429.154344/index.html.

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24

Kabir, MD H. "Environmental durability study of CFRP strengthened steel tubular structures under four-point bending." Thesis, Queensland University of Technology, 2016. https://eprints.qut.edu.au/91853/1/MD_Kabir_Thesis.pdf.

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This research has studied the environmental durability of CFRP strengthened steel circular hollow section (CHS) member under cold weather and a marine environment at different temperatures experimentally and numerically under bending. A significant reduction of tensile strength was found for adhesives material in both environments. The cold weather and a marine environment adversely affected the durability by reducing strength and stiffness of CFRP strengthened CHS members. An embedded GFRP layer together with CFRP layers enhanced durability in marine environment. A suitable durability design

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25

Moor, Constantin. "Three dimensional analysis of steel portal frame buildings." Thesis, Queensland University of Technology, 1997. https://eprints.qut.edu.au/36010/1/36010_Moor_1997.pdf.

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The true strength and deflection behaviour of industrial and commercial steel portal frame buildings is understood better if the effects of stiffness of end frames and profiled steel claddings are included. The conventional designs ignore these effects and are very much based on an idealised twodimensional frame behaviour. This thesis describes an investigation into the three-dimensional behaviour of steel portal frame buildings using computer modelling and full scale tests. The full scale tests of a 12 m x 12 m clad and unclad steel portal frame building with true pinned and standard

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26

Machado, Rafael Ignacio. "Experimental investigation of steel tubed reinforced concrete columns." Thesis, Georgia Institute of Technology, 1998. http://hdl.handle.net/1853/19457.

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27

Farley, Gary L. "Energy-absorption capability of composite tubes and beams." Diss., Virginia Polytechnic Institute and State University, 1989. http://hdl.handle.net/10919/54523.

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In this study, the objective was to develop a method of predicting the energy-absorption capability of composite subfloor beam structures. Before it is possible to develop such an analysis capability, an in-depth understanding of the crushing process of composite materials must be achieved. Many variables affect the crushing process of composite structures, such as the constituent materials’ mechanical properties, specimen geometry, and crushing speed. A comprehensive experimental evaluation of tube specimens was conducted to develop insight into how composite structural elements crush and wha

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28

Wheeler, A. T. "The behaviour of bolted moment end plate connections in rectangular hollow sections subjected to flexure." Phd thesis, Department of Civil Engineering, 1998. http://hdl.handle.net/2123/8669.

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29

Vieira, Rodrigo Cuberos 1983. "Análise numérica e experimental de ligações tubulares de aço do tipo luva parafusada." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258129.

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Orientador: João Alberto Venegas Requena<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-25T11:48:05Z (GMT). No. of bitstreams: 1 Vieira_RodrigoCuberos_D.pdf: 6229131 bytes, checksum: 7e5242e6a56caebc45c513aca2e6323e (MD5) Previous issue date: 2014<br>Resumo: Este trabalho apresenta o estudo de um modelo de ligação inovador para emendas de perfis tubulares circulares, visando facilitar e baratear a montagem e fabricação das estruturas metálicas tubulares, além de proporcionar economia de te

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30

Nagui, Alexander. "A comparative analysis of the resistance of tubular joints." Master's thesis, Alma Mater Studiorum - Università di Bologna, 2017.

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The resistance of tubular joints is conventionally determined by the failure mode approach where strength formulae are often determined in a semi-empirical way. The European standard EN 1993-1-8 is under the revision with the goal to have a new version in 2020. The design equations for hollow section joints in Chapter 7 of EN 1993-1-8, which have been calibrated against available experimental results in the 80’s, are compared with the design formulae in the international standard ISO 14346. In ISO 14346, the design equations have been re-analysed, adopting the results of extensive numerical in

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Minchillo, Daniela Grintaci Vasconcellos. "Estudo de ligações pinadas com chapa de topo para aplicações em estruturas metálicas treliçadas tubulares planas." [s.n.], 2011. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257814.

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Orientador: João Alberto Venegas Requena<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-19T15:03:35Z (GMT). No. of bitstreams: 1 Minchillo_DanielaGrintaciVasconcellos_D.pdf: 6597615 bytes, checksum: 5e256a912f052806cb5166fe84151bf7 (MD5) Previous issue date: 2011<br>Resumo: Este trabalho apresenta o desenvolvimento de uma concepção estrutural para ligações de treliças metálicas tubulares de seção circular com chapa de topo através de um estudo teórico-experimental. Nesta concepção as extre

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32

Coelho, da Silva Catherine Souto Costa 1986. "Estudo de ligações pinadas com chapa de topo para aplicações em estruturas metálicas treliçadas tubulares multiplanares." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258128.

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Orientador: João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-24T13:46:37Z (GMT). No. of bitstreams: 1 CoelhodaSilva_CatherineSoutoCosta_M.pdf: 3557954 bytes, checksum: afb90fa08dbf9c58642449f92217d07a (MD5) Previous issue date: 2014<br>Resumo: O objetivo deste trabalho é apresentar um tipo de ligação em treliças metálicas tubulares multiplanares de seção circular com chapa de topo. Nestas ligações as extremidades das diagonais são superpostas e unidas por u

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33

Souza, Mauricio Guilherme Quilez. "Automação e integração CAD/CAE no projeto de estruturas metalicas, utilizando perfis tubulares." [s.n.], 2006. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257809.

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Orientador: João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-09T16:24:16Z (GMT). No. of bitstreams: 1 Souza_MauricioGuilhermeQuilez_M.pdf: 5444391 bytes, checksum: f64376df9364d46cfcb18e6ba06eff3a (MD5) Previous issue date: 2006<br>Resumo: Este trabalho tem como objetivo o desenvolvimento de códigos de computador que têm a finalidade de automatizar as etapas principais de um projeto de estruturas metálicas através das linguagens AutoLISP e Delphi5. Os proje

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34

Souza, Alex Sander Clemente de. "Contribuição ao estudo das estruturas metálicas espaciais." Universidade de São Paulo, 1998. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-26022018-134729/.

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Este trabalho apresenta um estudo sobre as estruturas metálicas espaciais abordando os seguintes aspectos: histórico e desenvolvimento, tipos, vantagens do sistema tridimensional e comportamento estrutural. Atenção especial é dispensada às tipologias de treliças espaciais mais comuns no Brasil, formadas por tubos circulares com variações de inércia nas extremidades. A influência da variação de inércia nas extremidades das barras no comportamento destes elementos isoladamente (resistência à compressão) e comportamento global da estrutura, foi estudada via elementos finitos. Descrevem-se vários

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Plodpradista, Wisuwat. "Study of tubular linear induction motor for pneumatic capsule pipeline system /." free to MU campus, to others for purchase, 2002. http://wwwlib.umi.com/cr/mo/fullcit?p3052209.

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Simões, Renato. "Efeito do confinamento em pilares mistos curtos de aço e concreto." [s.n.], 2008. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257860.

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Orientadores: Ana Elisabete Paganelli Guimarães de Avila Jacintho, João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-11T12:43:40Z (GMT). No. of bitstreams: 1 Simoes_Renato_M.pdf: 4003726 bytes, checksum: d64741e911e9a1baef5581cc04dec747 (MD5) Previous issue date: 2008<br>Resumo: O emprego das estruturas mistas está cada vez mais comum, pois as mesmas apresentam vantagens construtivas em relação às estruturas convencionais de aço ou concreto. Este sistema con

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37

Kreisel, Martin. "Ocelová konstrukce sportovní haly." Master's thesis, Vysoké učení technické v Brně. Fakulta stavební, 2013. http://www.nusl.cz/ntk/nusl-226068.

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Steel structure of the sports hall in the city of Olomouc. Specific design is chosen from three options. Plan dimensions of 45 x 60 m. Height 12.5 m. Structure is composed of rolled profiles and tubular steel. Two trusses girders are fixed by knuckle joints on pillars. Static check is performed using the program SCIA ENGINEER 2009 and the manual review.

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Jiao, Hui 1963. "The behaviour of very high strength (VHS) members and welded connections." Monash University, Dept. of Civil Engineering, 2003. http://arrow.monash.edu.au/hdl/1959.1/9417.

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Forti, Nadia Cazarim da Silva. "Estudo parametrico de estruturas tubulares com ligações multiplanares." [s.n.], 2010. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257812.

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Orientador: João Alberto Venegas Requena<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-15T22:06:00Z (GMT). No. of bitstreams: 1 Forti_NadiaCazarimdaSilva_D.pdf: 4434332 bytes, checksum: 7a022dba8cf147d4f048eb4863373d71 (MD5) Previous issue date: 2010<br>Resumo: Este trabalho apresenta um estudo paramétrico comparativo de ligações do tipo K e KK utilizando perfis tubulares circulares com afastamento entre diagonais e carregadas simetricamente. Para se comparar as ligações, foi desenvolvido

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40

Vendrame, Adriano Márcio. "Contribuição ao estudo das cúpulas treliçadas utilizando elementos tubulares em aço." Universidade de São Paulo, 1999. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-14122017-154316/.

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Este trabalho apresenta um estudo sobre as estruturas espaciais em forma de cúpulas abordando os seguintes aspectos: histórico, desenvolvimento, descrição dos tipos mais utilizados, comportamento, análise e alguns aspectos de projeto e execução. Enfatizam-se as cúpulas constituídas por elementos tubulares com seção transversal circular e, em particular, as que necessitam da estampagem da extremidade de seus elementos para confecção do sistema de ligação. Descrevem-se vários sistemas de ligação utilizados em vários países e os utilizados no Brasil. A influência da variação de inércia causada pe

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Pereira, Daniel Henrique Fidelis. "Análise do comportamento estrutural de ligações em aço entre viga de seção I e pilar de seção tubular circular." Universidade de São Paulo, 2013. http://www.teses.usp.br/teses/disponiveis/18/18134/tde-11122013-101943/.

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Esta pesquisa consiste de uma investigação acerca do comportamento estrutural de ligações entre viga de seção I e pilar de seção tubular circular em situações de pilar de canto e de pilar solicitado por quatro vigas simultaneamente (pilar central). A associação entre a viga de seção I e o pilar de seção tubular circular remete à análise de ligações com comportamento complexo. A partir da análise numérica, via Método dos Elementos Finitos com os softwares ANSYS® e TrueGrid® foi avaliado o comportamento momento-rotação e parâmetros como resistência, rigidez inicial e ductilidade das ligações. Fo

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Afshan, Sheida. "Structural behaviour of cold-formed stainless steel tubular members." Thesis, Imperial College London, 2013. http://hdl.handle.net/10044/1/23660.

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This thesis examines the behaviour of cold-formed stainless steel tubular structural members, with an emphasis on ferritic stainless steels. Owing to the high comparative expense of stainless steel relative to traditional carbon steel, this study aims to identify and develop means of utilising the material more efficiently. A comprehensive material test programme was carried out as part of an extensive study into the prediction of strength enhancements in cold-formed structural sections that arise during production. Material tests on a total of 51 flat coupons and 28 corner coupons, extracted

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Lima, JoÃo Baptista Cardoso Athayde. "ContribuiÃÃes para otimizaÃÃo estrutural de torres tubulares de aÃo para turbinas eÃlicas." Universidade Federal do CearÃ, 2011. http://www.teses.ufc.br/tde_busca/arquivo.php?codArquivo=8131.

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nÃo hÃ<br>As grandes questÃes do mundo globalizado tÃm passado, necessariamente, pelos temas ligados Ã sustentabilidade, energia limpa, exploraÃÃo do meio ambiente de forma ecologicamente correta e inovaÃÃo tecnolÃgica para manter o planeta saudÃvel. Nesse contexto, a energia eÃlica vem se destacando, principalmente na regiÃo Nordeste do Brasil, pelo grande potencial dos ventos e as caracterÃsticas de renovabilidade e complementaridade com a energia das hidrelÃtricas. As torres, que representam parcela significativa do custo do sistema, tendem a crescer buscando ventos com maiores velocidade e

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Folster, Kaylee. "Influence of geometry on the dynamic behaviour of steel tubular towers for onshore wind turbines." Master's thesis, University of Cape Town, 2017. http://hdl.handle.net/11427/25282.

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South Africa has recently experienced challenges regarding electricity consumption and availability. As part of the country's Integrated Resource Plan, these challenges are to be addressed. This involves a 20 year plan which aims to increase electricity supply capacity as well as reduce the reliance on coal power as part of the global trend to become more environmentally friendly. Wind power, specifically, is to account for a large portion of the renewable energy that is expected to become available by 2030. This results in the need for the understanding of wind turbine design by South African

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Fidalgo, Augusto Madrigali 1989. "Estudo teórico e numérico do comportamento de ligações tipo flange circular para estruturas tubulares de aço." [s.n.], 2014. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258130.

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Orientador: João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-25T16:56:00Z (GMT). No. of bitstreams: 1 Fidalgo_AugustoMadrigali_M.pdf: 8655271 bytes, checksum: 8636b5b90c043f307e3e2dde1a8696ff (MD5) Previous issue date: 2014<br>Resumo: Este trabalho consiste no estudo teórico e numérico de uma ligação flange, solicitada inicialmente por força axial de tração e, em um segundo momento, por uma força excêntrica de tração. Essa ligação é usada em estruturas metá

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Hu, Yu. "Improvement of the structural response of steel tubular wind turbine towers by means of stiffeners." Thesis, University of Birmingham, 2015. http://etheses.bham.ac.uk//id/eprint/6227/.

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In the thesis the structural response of steel tubular wind turbine towers with various design configurations is analysed using FEM modelling. First, a structural response simulation model was validated by comparison with the existing experimental data. This was then followed with a mesh density sensitivity analysis to obtain the optimum element size. Based on this outcome, towers of various heights between 50-250m are considered and investigated with three different design options as follows: (i) thick walled tower with internal horizontal stiffening rings, (ii) thick walled tower without sti

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Sepúlveda, Bárbara Daniela Giorgini 1986. "Influência das ligações no dimensionamento das estruturas tubulares circulares de aço treliçadas." [s.n.], 2013. http://repositorio.unicamp.br/jspui/handle/REPOSIP/258631.

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Orientador: João Alberto Venegas Requena<br>Dissertação (mestrado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-23T22:44:13Z (GMT). No. of bitstreams: 1 Sepulveda_BarbaraDanielaGiorgini_M.pdf: 5435418 bytes, checksum: 5d55af89b27e919b7c819e297b4cf056 (MD5) Previous issue date: 2013<br>Resumo: Este artigo apresenta o estudo da influência das ligações no comportamento das estruturas treliçadas compostas por perfis tubulares de aço. As ligações em treliças de aço são normalmente projetadas para união de barras

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Tao, Yunxiang. "Advanced numerical analysis and fire testing of cold-formed steel hollow section stud walls." Thesis, Queensland University of Technology, 2021. https://eprints.qut.edu.au/226716/1/Yunxiang_Tao_Thesis.pdf.

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This research investigated the behaviour of light gauge steel frame walls made of cold-formed steel hollow section studs under both ambient and fire conditions using full scale experimental and advanced numerical studies. It developed and improved new structural and fire design rules for hollow section stud walls that can be included in the Australian steel structures standard. Importantly, it showed that such wall systems have superior fire resistance than conventional wall systems used currently. Overall, this research has sufficiently improved the knowledge of light steel walls made of holl

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Vieira, Rosilene de Fátima 1968. "Um estudo sobre ligações do tipo YT de barras afastadas de seções tubulares circulares laminadas de aço." [s.n.], 2007. http://repositorio.unicamp.br/jspui/handle/REPOSIP/257808.

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Orientadores: João Alberto Venegas Requena, Arlene Maria Sarmanho Freitas<br>Tese (doutorado) - Universidade Estadual de Campinas, Faculdade de Engenharia Civil, Arquitetura e Urbanismo<br>Made available in DSpace on 2018-08-09T16:17:35Z (GMT). No. of bitstreams: 1 Vieira_RosilenedeFatima_D.pdf: 11511552 bytes, checksum: 29b74159f0f84a8ee1a18dcef013b5fa (MD5) Previous issue date: 2007<br>Resumo: Este trabalho apresenta os resultados de uma análise teórica, experimental e numérica, de uma ligação YT utilizada em estruturas metálicas planas, tendo como ponto de partida a verificação do comport

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ARAÚJO, Marcia Suzanna Dutra Abreu de. "Análise numérica sobre o comportamento ao fogo de pilares tubulares em aço." Universidade Federal de Pernambuco, 2016. https://repositorio.ufpe.br/handle/123456789/18591.

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Submitted by Fabio Sobreira Campos da Costa (fabio.sobreira@ufpe.br) on 2017-04-19T15:38:12Z No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação - Márcia Suzanna.pdf: 3055575 bytes, checksum: 6bc6b37e92f9ee9ac23e94abb75174c3 (MD5)<br>Made available in DSpace on 2017-04-19T15:38:12Z (GMT). No. of bitstreams: 2 license_rdf: 1232 bytes, checksum: 66e71c371cc565284e70f40736c94386 (MD5) Dissertação - Márcia Suzanna.pdf: 3055575 bytes, checksum: 6bc6b37e92f9ee9ac23e94abb75174c3 (MD5) Previous issue date: 2016-09-23<br>Atualmente, especia

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