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Academic literature on the topic 'Armerad betong'
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Dissertations / Theses on the topic "Armerad betong"
Frostell, John-Henrik. "Momentfördelning i pelardäck av armerad betong." Thesis, KTH, Betongbyggnad, 2007. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-37096.
Full textLykvist, Peter, and Mathias Blom. "Utmattning av vägbroar i armerad betong enligt eurokoder." Thesis, KTH, Byggteknik och design, 2011. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-49147.
Full textSedan den 1 januari 2010 är det krav i Sverige att för bro- och anläggningskonstruktioner använda de nya europeiska standarderna, eurokoder, för dimensionering. Ett kapitel som vållat stora problem för brokonstruktörer är kapitlet om utmattningslaster och dimensionering för dessa vilket ledde till att vi gjorde detta examensarbete. Vi har läst igenom de eurokoder som direkt och indirekt behandlar utmattning och utmattningsberäkningar, granskat bakgrundsdokument till eurokoderna samt läst examensarbeten som handlar om utmattning. Dessutom har vi också granskat beräkningar från ett flertal broar som olika konsultföretag konstruerat. Vi har valt att avgränsa arbetet till att enbart handla om utmattning av vägbroar i armerad betong. Detta har vi gjort för att metoder för verifiering av betongen i vägbroar inte är definierade i de nationella tilläggen till eurokoderna. Därför behövs ett förtydligande av vilka metoder som är lämpliga att använda. För att konstruktörer ska ha praktisk nytta av detta examensarbete, har vi redovisat en beräkningsgång med kommentarer och dessutom utfört egna beräkningar för en förenklad variant av en plattbro i två spann där vi redovisar beräkningarna i Excel mer ingående. Vad vi har kommit fram till är att armeringen ofta är mer utsatt för utmattning än betongen men verifieringsmetoden beskriven för armeringen i det nationella tillägget är en metod som är relativt lätt att använda med ett bra Excel eller MathCAD-ark.
Lind, Andreas. "Utmattning av järnvägsbroar i armerad betong : Enligt eurokoder." Thesis, Uppsala universitet, Byggteknik, 2013. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-208836.
Full textPettersson, Fredrik. "Tvärkraftsdimensionering av armerad betong : En utredning av beräkningsförfarandet." Thesis, Uppsala universitet, Byggteknik, 2014. http://urn.kb.se/resolve?urn=urn:nbn:se:uu:diva-233457.
Full textSas, Gabriel. "FRP shear strengthening of RC beams and walls." Licentiate thesis, Luleå : Department of Civil, Mining and Environmental Engineering, Luleå University of Technology, 2008. http://epubl.ltu.se/1402-1757/2008/39/.
Full textPirgholizadeh, Nezar, Tafid Krikor, and Jeny Krikor. "Dimensionering och analys av stålfiberarmerad betong : En mekanisk, ergonomisk och ekonomisk jämförlelse med konventionell armerad betong." Thesis, Mälardalens högskola, Akademin för ekonomi, samhälle och teknik, 2019. http://urn.kb.se/resolve?urn=urn:nbn:se:mdh:diva-44387.
Full textNexén, Oliver, and Jonas Jonsson. "Jämförelse mellan väggar av korslimmat trä och armerad betong med finita elementmetoden." Thesis, Högskolan i Gävle, Avdelningen för byggnadsteknik, energisystem och miljövetenskap, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32941.
Full textClimate change has a negative impact on the world. In the year 2015, the Paris agreement was presented to fight the climate crisis, which put greater demands on the construction sector. The construction sector accounts for a large part of both total energy use and energy-related greenhouse gas emissions, which must be reduced to meet the environmental requirements defined in the Paris Agreement. Cross-laminated timber, also known as CLT, is a construction material on the market that promotes sustainable construction compared to the currently dominating material concrete since the climate footprint for wood materials is less. The purpose of this research is to specify the difference between CLT and concrete walls. The study was developed through an experiment where the modeling program StruSoft FEM design was used to model, design, and analyze a reference building located at Gävle strand in Gävle. The focus is on how these structural materials behave as load-carrying elements and their differences. The research does not take energy, moisture, sound, or fire requirements into account. Analysis of both materials shows that concrete has advantages, especially regarding deflection and thickness. The results of CLT show that it is possible to build a multi-story house. However, CLT requires larger dimensions and gives greater deflections compared to concrete. The results show that the external walls need an 80 mm greater thickness than the concrete walls and the translational displacement is in the worst case 4,8 mm for CLT respective 1,8 mm for concrete. The results show that the total weight of the building with walls of CLT is 74 % of the total weight of the building with concrete walls. The weight of a building with CLT walls has great advantages and benefits both the environment and because of the lighter weight easier to work with. Since CLT is the better alternative for the environment, more builders should keep in mind to look at solutions with wood as a skeleton to promote sustainable construction.
Severin, Peter, and Hazim Sekić. "Jämförelse och utvärdering av dimensioneringsmetoder för stabiliserande väggar av armerad betong i höga hus." Thesis, KTH, Betongbyggnad, 2012. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-100878.
Full textHigh-rise buildings in Sweden are usually stabilized with walls design for both shear and compressive loads, so-called ”Shear walls”. Design of these elements refers to the Strut and-Tie method according to the European design code, SS-EN 1992-1-1 (EK2). Due to the lack of practically applicable design method for the Strut-and-Tie method often the American Concrete code is used to design these shear walls. Since these buildings are to be built in Sweden the Eurocodes should be applied. Therefore it is interesting to know how the difference in both the reinforcing and the stiffness becomes when both methods are applied for these wall elements. Reference object for comparison is a 25-storey building in Liljeholmen, where a shear wall is studied. In order to make a comparison, the current forces and moment that exist on the wall are needed, which are available from the ETABS-program. Application of the ACI code results in a classical formula calculation in which the main difficulty lies in transforming the American units to European. The Strut-and-Tie method is more complicated and the thesis begins by describing it in detail. Because of the complexity of the Strut-and-Tie methods, two softwares are used to facilitate the work. A stress distribution for the current wall is obtained by using the software ForcePAD. This stress distribution is used as input in the program CAST, where the design of the Strut-and-Tie model is done. The approach of shear wall design at this stage includes vertical and horizontal loads. The vertical loads are designed with standardized interaction curves where different load combinations are checked against interaction curves with various reinforcement scenarios. However, shear forces are determined by ACI formulas. The ACI method, which is formula based, has advantages over the ST-method applied according to EK2, it is quick and easy to apply to all types of wall elements. However, analysis of the wall element designed with both of these methods has shown a more conservative solution according to EK2. According to the FE-analysis of the wall element the demand capacity ratio is about 9 % lower for the wall element designed with the STmethod. The design according to EK2 and the ST-method require more reinforcement and is therefore more conservative compared to the wall designed by the ACI. The EK2 refers to the ST-method when designing “Shear Walls” and it is therefore not possible to give any different recommendation of design. Objectively speaking, the ACI method gives a satisfactory result and takes less time to apply, making it more competitive. For solid walls without openings it is suitable to use the ACI method, while the STmethod’s strength lies in the design of more complex wall elements.
Kollberg, Kim, and Felicia Ågren. "Förstärkningslösningar för en hög balk i armerad betong : Utfört i StruSoft FEM-Design 3D Structure." Thesis, Högskolan i Gävle, Energisystem och byggnadsteknik, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-32995.
Full textKarlsson, Evelina. "Dimensionering av höga balkar av armerad betong : En jämförelse mellan EK2, BBK, laboratorieförsök och ATENA 2D." Thesis, Luleå tekniska universitet, Institutionen för samhällsbyggnad och naturresurser, 2020. http://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-81429.
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