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PŘESTAVBA PRŮMYSLOVÝCH AREÁLŮ A ZÓN - PRÁDELNY A ČISTÍRNY CHRIŠTOF VE VYŠKOVĚ / REBUILDING OF THE INDUSTRY AREALS AND ZONES - LAUNDRY FACTORY "CHRIŠTOF" IN VYŠKOVOpatrný, Vladimír January 2014 (has links)
REBUILDING OF THE INDUSTRY AREALS AND ZONES - LAUNDRY FACTORY "CHRIŠTOF" IN VYŠKOV. The proposal was approached as to the overall redevelopment area, leaving one central building. Furthermore, it accommodated a number of new buildings for shops, offices and housing. Urban design responds to the surrounding buildings and orientation to the cardinal. Part of the area is used as a park for recreation and sports activities. Overall, this is a change from the closed obsolete and unused territory which becomes a public space for shopping, dining, living and sports.
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[pt] ESTUDO TEÓRICO-EXPERIMENTAL DE VIGAMENTO DE PISO TIPO STUB-GIRDER MODIFICADO / [en] THEORETICAL AND EXPERIMENTAL STUDY OF A MODIFIED STUB-GIRDER FLOOR SYSTEMANTONYONY CARLOS JORDAO HEITOR 29 November 2021 (has links)
[pt] O uso de sistemas estruturais mistos no mercado brasileiro tem aumentado nos últimos anos. Nesses sistemas as seções de diversos elementos estruturais são compostas por aço e concreto e suas resistências à tração e à compressão, respectivamente, são utilizadas de forma otimizada. Este estudo tem por objetivo avaliar o comportamento estrutural do vigamento de piso misto tipo Stub-Girder, modificado para melhor aproveitamento dos perfis em sua fabricação. O estudo é baseado em formulações não lineares físicas por meio do método dos elementos finitos (MEF), com uso do software ANSYS. Para calibrar o modelo numérico, foram utilizados dados de ensaios em escala real disponíveis na literatura, além de um ensaio em escala real realizado no Laboratório de Estruturas do departamento de Engenharia Civil e Ambiental da PUC-Rio. Uma análise paramétrica foi realizada utilizando diversos tipos de perfis disponíveis no mercado brasileiro para que o sistema Stub-Girder modificado pudesse ser avaliado no que diz respeito à resistência e rigidez. Foi ainda mostrado que os modelos constitutivos adotados para o concreto apresentam resultados coerentes e próximos dos obtidos em laboratório. / [en] Steel-concrete composite structural systems are increasingly adopted in Brazil s construction industry. In these systems steel and concrete are used to create sections that behave in structurally efficient manner by utilizing steel s tensile strength and concrete s compressive strength. The purpose of this research is to evaluate the structural behavior of a Stub-Girder floor system, modified to improve the use of steel profiles in its manufacturing process. A numerical procedure is developed, based on nonlinear analysis through the use of the finite element method (FEM), employing the software ANSYS. To calibrate the numerical model, data from full-scale tests available in the literature were used in addition to a full-scale test carried out in the Structures Laboratory (Civil Engineering and Environment department, PUC-Rio). A parametric analysis was performed using several types of profiles available in the Brazilian market so that the modified stub-girder system could be evaluated regarding strength and stiffness. The constitutive models for concrete were shown to be coherent with laboratory results.
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Сейсмостойкие рамные каркасы из сварных двутавровых профилей с гофрированными стенками : магистерская диссертация / Earthquake-resistant frames made of welded I-beam profiles with corrugated wallsГайфуллина, К. В., Gaifullina, K. V. January 2023 (has links)
Изучена эффективность применения и рациональность использования гофрированных конструкций для проектирования сейсмостойких стальных рамных каркасов с использованием современных методов сейсмозащиты. / Studied the effectiveness of the use and rationality of the use corrugated structures for the design of earthquake-resistant steel frames using modern methods of seismic protection.
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Development and application of corotational finite elements for the analysis of steel structures in firePossidente, Luca 19 February 2021 (has links)
Utbredningen av en brand inuti en byggnad kan leda till global eller lokal strukturell kollaps, särskilt i stålramkonstruktioner. Faktum är att stålkonstruktioner är särskilt utsatta för termiska angrepp på grund av ett högt värde av stålkonduktivitet och tvärsnitten med små tjockleken. Som en viktig aspekt av konstruktionen bör brandsäkerhetskrav uppnås antingen enligt föreskrivande regler eller enligt antagande av prestationsbaserad brandteknik. Trots möjligheten att använda enkla metoder som involverar membersanalys kombinerat med nominella brandkurvor, är en mer exakt analys av det termomekaniska beteendet hos en stålkonstruktion ett tilltalande alternativ eftersom det kan leda till mer ekonomiska och effektiva lösningar genom att ta hänsyn till möjliga gynnsamma mekanismer.
Denna analys kräver vanligtvis utredning av delar av strukturen eller till och med av hela strukturen. För detta ändamål och för att få en djupare kunskap om strukturelementens beteende vid förhöjd temperatur bör numerisk simulering användas. I denna avhandling utvecklades och användes termomekaniska finita element som är lämpliga för analys av stålkonstruktioner utsätta för brand. Relevanta fallstudier utfördes.
Utvecklingen av både ett termomekaniskt skal- och 3D balkelement baserade på en korotationsformulering presenteras. De flesta relevanta strukturfall kan undersökas på ett adekvat sätt genom att antingen använda något av dessa element eller kombinera dem. Korotationsformuleringen är väl lämpad för analyser av strukturer där stora förskjutningar, men små töjningar förekommer, som i fallet med stålkonstruktioner i brand. Elementens huvuddrag beskrivs, liksom deras karakterisering i termomekaniskt sammanhang. I detta avseende övervägdes materialnedbrytningen på grund av temperaturökningen och den termiska expansionen av stål vid härledningen av elementen. Dessutom presenteras en grenväxlingsprocedur för att utföra preliminära instabilitetsanalyser och få viktig
inblick i efterknäckningsbeteendet hos stålkonstruktioner som utsätts för brand.
Tillämpningen av de utvecklade numeriska verktygen ges i den del av avhandlingen som ägnas åt det publicerade forskningsarbetet. Flera aspekter av knäckningen av stålkonstruktionselement vid förhöjd temperatur diskuteras. I Artikel I tillhandahålls överväganden om påverkan av geometriska imperfektioner på beteendet hos komprimerade stålplattor och kolonner vid förhöjda temperaturer, liksom implikationer och resultat av användningen av grenväxlingsprocedur. I Artikel II valideras det föreslagna 3D-balkelementet genom meningsfulla fallstudier där torsionsdeformationer är signifikanta. De utvecklade balk- och skalelementen används i en undersökning av knäckningsmotstånd hos komprimerade vinkel-, Tee- och korsformade stålprofiler vid förhöjd temperatur som presenteras i Artikel III. En förbättrad knäckningskurva för design presenteras i detta arbete. Som ett exempel på tillämpningen av principerna för brandsäkerhetsteknik presenteras en omfattande analys i Artikel IV. Två relevanta brandscenarier identifieras för den undersökta byggnaden, som modelleras och
analyseras i programmet SAFIR. / The ignition and the propagation of a fire inside a building may lead to global or local structural collapse, especially in steel framed structures. Indeed, steel structures are particularly vulnerable to thermal attack because of a high value of steel conductivity and of the small thickness that characterise the cross-sections. As a crucial aspect of design, fire safety requirements should be achieved either following prescriptive rules or adopting performance-based fire engineering. Despite the possibility to employ simple methods that involve member analysis under nominal fire curves, a more accurate analysis of the thermomechanical behaviour of a steel structural system is an appealing alternative, as it may lead to more economical and efficient solutions by taking into account possible favourable mechanisms. This analysis typically requires the investigation of parts of the structure or even of the whole structure. For this purpose, and in order to gain a deeper knowledge about the behaviour of structural members at elevated temperature, numerical simulation should be employed. In this thesis, thermomechanical finite elements, suited for the analyses of steel structures in fire, were developed and exploited in numerical simulation of relevant case studies.
The development of a shell and of a 3D beam thermomechanical finite element based on a corotational formulation is presented. Most of the relevant structural cases can be adequately investigated by either using one of these elements or combining them. The corotational formulation is well suited for the analyses of structures in which large displacements, but small strains occur, as in the case of steel structures in fire. The main features of the elements are described, as well as their characterization in the thermomechanical context. In this regard, the material degradation due to the temperature increase and the thermal expansion of steel were considered in the derivation of the elements. In addition, a branch-switching procedure to perform preliminary instability analyses and get important insight into the post-buckling behaviour of steel structures subjected to fire is presented.
The application of the developed numerical tools is provided in the part of the thesis devoted to the published research work. Several aspects of the buckling of steel structural elements at elevated temperature are discussed. In paper I, considerations about the influence of geometrical imperfections on the behaviour of compressed steel plates and columns at elevated temperatures are provided, as well as implications and results of the employment of the branch-switching procedure. In Paper II, the proposed 3D beam element is validated for meaningful case studies, in which torsional deformations are significant. The developed beam and shell elements are employed in an investigation of buckling resistance of compressed angular, Tee and cruciform steel profiles at elevated temperature presented in Paper III. An improved buckling curve for design is presented in this work. Furthermore, as an example of the application of Fire Safety Engineering principles, a comprehensive analysis is proposed in Paper IV. Two relevant fire scenarios are identified for the investigated building, which is modelled and analysed in the software SAFIR.
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Рамные каркасы из сварных двутавровых профилей с гофрированными стенками для условий Крайнего Севера : магистерская диссертация / Frames made of welded I-beams with corrugated walls for the conditions of the Far NorthНагибин, П. В., Nagibin, P. V. January 2024 (has links)
Рассматриваются различные типы профилей, в том числе профили с тонкой гофрированной стенкой для условий Крайнего Севера. Определены типы профилей со сниженной материалоемкостью для эффективного применения в условиях Крайнего Севера. / Various types of profiles are considered, including profiles with a thin corrugated wall for the conditions of the Far North. Types of profiles with reduced material consumption for effective use in the conditions of the Far North are determined.
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New Proposals for Modeling the Thermo-Mechanical Response of Steel Structures Under Fire Using Beam-Type Finite ElementsPallares Muñoz, Myriam Rocío 16 May 2022 (has links)
Tesis por compendio / [ES] El fuego es uno de los principales riesgos que pueden afectar a las estructuras de acero. El impacto del fuego en estas estructuras es muy adverso y complejo de simular, principalmente en escenarios de fuego realistas, donde el calentamiento en los miembros de acero no es uniforme y en miembros de acero esbeltos porque fallan prematuramente por la aparición de abolladuras locales. Para predecir con exactitud la respuesta de las estructuras de acero al fuego, se han desarrollado modelos avanzados y complejos de EF con elementos de cáscara y sólidos. Sin embargo, estos modelos son costosos desde el punto de vista computacional, lo que complica la realización de análisis más complejos que requieren muchas simulaciones en poco tiempo y con bajos costes computacionales. Por lo tanto, es necesario desarrollar modelos computacionales sencillos, precisos y de bajo coste, tan fiables como los modelos de cáscara, que abran el camino más fácilmente hacia la modelización de problemas estructurales de acero más complejos en situación de incendio. En esta tesis se presentan propuestas sencillas y de bajo coste computacional para simular la respuesta mecánica de estructuras de acero en condición de incendio utilizando un elemento finito de viga de Timoshenko de Ansys. Una de las propuestas consiste en una nueva metodología para el análisis en 3D de estructuras de acero sometidas a temperaturas no uniformes por el fuego. Las otras consisten en dos estrategias de modelización para analizar el pandeo lateral torsional en miembros de acero de clase 4 a temperaturas elevadas. Las propuestas simplifican significativamente la modelización estructural y se validan satisfactoriamente con resultados numéricos y experimentales. Esto significa que problemas complejos de ingeniería de incendio, como los análisis probabilísticos y de optimización, pueden tratarse con mucha más facilidad, lo que representa un paso importante hacia la aplicación generalizada de enfoques basados en el desempeño para tratar los efectos del fuego en las estructuras de acero. / [CA] El foc és un dels principals riscos que poden afectar les estructures d'acer. L'impacte del foc en estes estructures és molt advers i complex de simular, principalment en escenaris de foc realistes, on el calfament en els membres d'acer no és uniforme i en membres d'acer esvelts perquè fallen prematurament per l'aparició d'abonyegadures locals. Per a predir amb exactitud la resposta de les estructures d'acer al foc, s'han desenvolupat models avançats i complexos d'elements finits de corfa i sòlids. No obstant això, estos models són computacionalment costosos, la qual cosa complica la realització d'anàlisi més complexos que requerixen moltes simulacions en poc de temps i amb baixos costos computacionals. Per tant, és necessari desenvolupar models computacionals senzills, precisos i de baix cost, tan fiables com els models de corfa, que òbriguen el camí més fàcilment cap a la modelització de problemes estructurals d'acer més complexos en situació d'incendi. En esta tesi es presenten propostes senzilles i de baix cost per a simular la resposta mecànica d'estructures d'acer en condició d'incendi utilitzant un element finit de biga de Timoshenko d'Ansys. Una de les propostes consistix en una nova metodologia per a l'anàlisi en 3D d'estructures d'acer sotmeses a temperatures no uniformes pel foc. Les altres consistixen en dos estratègies de modelització per a analitzar el bombament lateral torsional en membres d'acer de classe 4 a temperatures elevades. Les propostes simplifiquen significativament la modelització estructural i es validen satisfactòriament amb resultats numèrics i experimentals. Açò significa que problemes complexos d'enginyeria d'incendi, com les anàlisis probabilístiques i d'optimització, poden tractar-se amb molta més facilitat, la qual cosa representa un pas important cap a l'aplicació generalitzada d'enfocaments basats en l'exercici per a tractar els efectes del foc en les estructures d'acer. / [EN] Fire is one of the main hazards that can affect steel structures. The impact of fire on these structures is highly adverse and complex to simulate, mainly in realistic fire scenarios, where heating in steel members is non-uniform and in slender steel members because they fail prematurely by local buckling. In order to accurately predict the response of steel structures to fire, advanced and complex FE models with shell and solid elements have been developed. However, these shell models are computationally expensive, complicating the carrying out of more complex analyses that require many simulations in a short time and at low computational costs. Therefore, there is a need to develop simple, accurate, and low-cost computational models as reliable as shell-type models that open the path more easily towards modeling more complex steel structural problems in fire conditions. This thesis presents simple and low-cost proposals to simulate the mechanical response of steel structures under fire using Timoshenko's beam-type finite element available in Ansys. One of the proposals consists of a new methodology for the 3D-analysis of steel frames subjected to non-uniform temperatures by fire. The others consist of two modeling strategies for analyzing the lateral-torsional buckling in class-4 steel structural members at elevated temperatures. The proposals significantly simplify the structural modeling and satisfactorily validate numerical and experimental results. That means that complex fire engineering problems, such as probabilistic and optimization analyses, can be handled much more easily, representing a significant step toward the generalized application of performance-based approaches to deal with fire effects on steel structures. / Pallares Muñoz, MR. (2022). New Proposals for Modeling the Thermo-Mechanical Response of Steel Structures Under Fire Using Beam-Type Finite Elements [Tesis doctoral]. Universitat Politècnica de València. https://doi.org/10.4995/Thesis/10251/182768 / Compendio
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Contribuição para o projeto e dimensionamento de edifícios de múltiplos andares com elementos estruturais mistos aço-concreto / Contribution for the design of multiple storey buildings with composite elements steel-concreteFabrizzi, Marcela de Arruda 03 July 2007 (has links)
Este trabalho objetivou o estudo dos edifícios de múltiplos andares constituídos por elementos mistos aço-concreto, com enfoque acadêmico, porém abordando aspectos e recomendações normativas diretamente aplicadas na prática corrente da engenharia estrutural. A revisão bibliográfica foi realizada com base em estudos acadêmicos e normativos além do estudo de um edifício exemplo constituído por elementos mistos. Os elementos mistos lajes, vigas e pilares foram abordados inicialmente de forma isolada, com base nas recomendações normativas, sendo que ao final os elementos foram interligados, apresentando ao leitor os principais aspectos teóricos e normativos para o dimensionamento de um edifício completo constituído de elementos estruturais mistos. / This study aims the multiple storey buildings formed by composite elements steel-concrete, with academic emphasis, however approaching standard recommendations and aspects directly applied to the structural engineering. A bibliographic review based on academic and standard studies was made, besides the design of an example building formed by composite elements. The composite elements: slabs, beams and columns were firstly approached based on standard aspects, and in the end, the elements were interconnected and presented to the reader the main theoretical and standard aspects to the design of a complete building formed by composite structural elements.
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Contribuição para o projeto e dimensionamento de edifícios de múltiplos andares com elementos estruturais mistos aço-concreto / Contribution for the design of multiple storey buildings with composite elements steel-concreteMarcela de Arruda Fabrizzi 03 July 2007 (has links)
Este trabalho objetivou o estudo dos edifícios de múltiplos andares constituídos por elementos mistos aço-concreto, com enfoque acadêmico, porém abordando aspectos e recomendações normativas diretamente aplicadas na prática corrente da engenharia estrutural. A revisão bibliográfica foi realizada com base em estudos acadêmicos e normativos além do estudo de um edifício exemplo constituído por elementos mistos. Os elementos mistos lajes, vigas e pilares foram abordados inicialmente de forma isolada, com base nas recomendações normativas, sendo que ao final os elementos foram interligados, apresentando ao leitor os principais aspectos teóricos e normativos para o dimensionamento de um edifício completo constituído de elementos estruturais mistos. / This study aims the multiple storey buildings formed by composite elements steel-concrete, with academic emphasis, however approaching standard recommendations and aspects directly applied to the structural engineering. A bibliographic review based on academic and standard studies was made, besides the design of an example building formed by composite elements. The composite elements: slabs, beams and columns were firstly approached based on standard aspects, and in the end, the elements were interconnected and presented to the reader the main theoretical and standard aspects to the design of a complete building formed by composite structural elements.
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Výrobna veterinárních léčiv Tekro – Nová Dědina - stavebně technologický projekt / Production of veterinary drugs Tekro - New Dědina - construction and technological projectKarel, Jaroslav January 2014 (has links)
The content of this thesis is the construction technology project construction hall for the production of veterinary drugs Tekro in the village Nová Dedina. In this work addresses the project site equipment, scheduling, technical regulations, inspection and test plan, a study of the main technological stages of the building.
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Skladová a expediční hala včetně rekonstrukce-stavebně technologický projekt / Storage and dispatch hall including the reconstruction - building-technology projectToman, Jan January 2014 (has links)
Subject of this thesis is construction technology project storage and dispatch hall in Třebíč. This thesis contains technical report, construction site equipment project, time and financial plan, bill of quantities, technology study of the major technology stages, mechanical assembly design, technological specification, quality inspections.
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