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Stabilitet och tillåten rörelse hos flervåningsbyggnader: Analys av höga byggnaders begränsningar till dynamiska krafter och svängningar
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Tekniska sektionen, Institutionen för teknikvetenskaper, Tillämpad mekanik, Byggteknik.
2018 (Svenska)Självständigt arbete på grundnivå (yrkesexamen), 10 poäng / 15 hpStudentuppsats (Examensarbete)
Abstract [en]

One of the challenging design areas of high buildings is the determination of its stability and response to dynamic forces. These factors affect the horizontal deformations and fluctuations that the building will result in. This report examines the demands placed on the stability and deformations of high buildings through a literature study as well as examines these requirements with a reference building built into FEM-Design. The literature study shows that quite a few standards have to be taken into account and used in the design of tall buildings. Regarding limit values, only SS-ISO 10137 specifies maximum values for a building's peak acceleration relative to its own frequency. Limit values for transient deformations are not available. Furthermore, the literature study shows that plenty of studies of human perception and tolerance to movements in buildings have been performed. The movements have been shown to cause physical andmental discomfort if exaggerated, which SS-ISO 10137 bases its limits after. The 75-meter reference building, modeled in FEM-Design, was built to calculate the building's own frequency, transient deflection, and self-weight. The wind loads have been calculated separately and entered into the program. Calculations for the building's peakacceleration have then been calculated and compared to the limitvalues in SS-ISO 10137. The structure of the reference building, consisting of 25-storeys in concrete, met the standard requirements for housing and should be able to be built without the risk of discomfort among the residents. Other inputs were 250 and 200 mm floor and wallthickness in C25 / 30 and VKR pillar in each corner, 200x200x10 mmin quality S355. The plan levels are square 21.8m wide andidentical to all 25 levels.The model-building met the requirements for living space accordingto SS-ISO 10137 with respect to peak acceleration and frequency. However, the calculated horizontal deformations did not have anylimit values to be compared to and were therefore not compared to any restrictions.

Ort, förlag, år, upplaga, sidor
2018. , s. 40
Nyckelord [sv]
Acceleration, Gränsvärden, Stabilitet
Nationell ämneskategori
Husbyggnad
Identifikatorer
URN: urn:nbn:se:uu:diva-355644ISRN: UTH-INGUTB-EX-B-2018/09-SEOAI: oai:DiVA.org:uu-355644DiVA, id: diva2:1230300
Externt samarbete
Kåver & Mellin AB
Utbildningsprogram
Högskoleingenjörsprogrammet i byggteknik
Handledare
Examinatorer
Tillgänglig från: 2018-07-03 Skapad: 2018-07-03 Senast uppdaterad: 2018-07-03Bibliografiskt granskad

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