Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Verification of the response of a concrete arch dam subjected to seasonal temperature variations
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
KTH, School of Architecture and the Built Environment (ABE), Civil and Architectural Engineering, Concrete Structures.
2015 (English)Independent thesis Advanced level (degree of Master (Two Years)), 20 credits / 30 HE creditsStudent thesisAlternative title
Verifiering av responsen från en valvdamm utsatt för säsongsbetingade temperaturförändringar (Swedish)
Abstract [en]

Many dams existing today were constructed around fifty years ago. Condition monitoring is essential for maintaining high safety and determining the current level of safety and stability for these dams. There is a need for new monitoring techniques and finite element coupled monitoring could be one of these techniques. A concrete arch dam located in Sweden is modelled and calibrated with respect to concrete temperature measurements. The temperature distribution is then defined as a prescribed strain in a structural mechanical model in which a parametric study is performed. The results from the parametric study are compared to measurements of the crest deformation and a combination of parameters is found giving the lowest difference between measurements and model results for the mid-section. The results show that the finite element model can be used to predict the behavior of the dam with acceptable deviation. The parametric study indicates that the reference temperature of the concrete has little effect on the amplitude of the deformation and that the governing factor is the coefficient of thermal expansion.

Abstract [sv]

Många av de dammar som finns idag byggdes för omkring femtio år sedan. Tillståndsövervakning är avgörande för att kunna bestämma nivån av säkerhet och stabilitet för dessa dammar. Det finns ett behov av ny övervakningsteknik och finita element-kopplad övervakning kan vara en av dessa tekniker. En betongvalvdamm modelleras och kalibreras med avseende på uppmätt betongtemperatur. Den beräknade temperaturfördelningen definieras sedan som en föreskriven töjning en strukturmekanisk modell i vilken en parametrisk studie utförs. Resultaten från parameterstudien jämförs med mätningar av kröndeformation och en kombination av parametrar identifieras som ger lägsta skillnad mellan mätningar och modellresultat för mittsektionen. Resultaten visar att modellen kan användas för att förutsäga dammens beteende med acceptabel avvikelse. Parameterstudien indikerar att referenstemperaturen för betongen har liten inverkan på amplituden för deformationen och att den styrande faktorn är längdutvidgningskoefficienten.

Place, publisher, year, edition, pages
2015. , 89 p.
Series
TRITA-BKN-Examensarbete, ISSN 1103-4297 ; 458
Keyword [en]
Concrete arch dams, thermal effects, ice load, condition monitoring, finite element analysis
Keyword [sv]
Betongvalvdammar, termiska effekter, tillståndsövervakning, islast, finita element analys
National Category
Other Civil Engineering
Identifiers
URN: urn:nbn:se:kth:diva-169917ISRN: KTH/BKN/EX–458–SEOAI: oai:DiVA.org:kth-169917DiVA: diva2:826200
Subject / course
Concrete Structures
Educational program
Master of Science in Engineering - Urban Management
Supervisors
Examiners
Available from: 2015-06-26 Created: 2015-06-24 Last updated: 2015-06-26Bibliographically approved

Open Access in DiVA

fulltext(6347 kB)520 downloads
File information
File name FULLTEXT01.pdfFile size 6347 kBChecksum SHA-512
3837df1888f3a73a1a8cf47a96b2d0ab433d5464ca1694939cdc4923fb54beac619d525d52a2bac3f9f1869a398a400e67c1d78b37373abee18b76832b2d38bc
Type fulltextMimetype application/pdf

By organisation
Concrete Structures
Other Civil Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 520 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

urn-nbn

Altmetric score

urn-nbn
Total: 1460 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • harvard1
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf