Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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
Statistical analysis of thaw index for thaw weakening design purposes
Luleå University of Technology, Department of Civil, Environmental and Natural Resources Engineering, Mining and Geotechnical Engineering.
Luleå University of Technology.
2016 (English)In: Proceedings of Nordic Conference on Soil Mechanics and Geotechnical NGM: Reykjavik, Iceland 25th – 28th of May 2016, 2016, 1321-1327 p.Conference paper, Published paper (Refereed)
Abstract [en]

In frost action research and design most focus has been put on frost heave. There are several models available to predict frost heave and the concept of statistical re-occurrence times of frost index is commonly used in design. Less effort has been put on thaw weakening modeling and design even though thaw weakening causes a lot of damage on infrastructure such as road and railways. In e.g. Sweden the Transport Administration collects temperature data during the freezing season for frost heave design purposes on project levels but thawing effects are conventionalized by reference tables on a regional level.The aim of this study is to define and quantify the thawing event in such way that it could be applied on a project level in a similar way as temperature measurements are used for frost design. In this study thaw index has been analysed statistically based on air temperature data from 50 stations, collected from year 1951 and onwards by the Swedish Meteorological and Hydrological Institute (SMHI), in Sweden. The temperature thaw seasons have been correlated to the Swedish Transport Administrations frost depth measurement stations.A reference table has been developed based on reoccurrence times of thawing seasons based on the magnitude of thawing index. Based on the statistical distribution of thawing indexes Sweden was divided into three regions in this study. It seems, by statistical means, to be fully possible to develop reference values for thawing periods where thawing index is the working unit. In order to implement the results in e.g. pavement design thawing temperature measurements on a local or semi-regional level are required.

Place, publisher, year, edition, pages
2016. 1321-1327 p.
Keyword [en]
Civil engineering and architecture - Building engineering
Keyword [sv]
thaw weakening, thaw design, Samhällsbyggnadsteknik och arkitektur - Byggnadsteknik
National Category
Geotechnical Engineering
Research subject
Soil Mechanics; Sustainable transportation (AERI)
Identifiers
URN: urn:nbn:se:ltu:diva-38768Local ID: d4323efa-7d85-4ea5-8868-cd161d7bb6d4OAI: oai:DiVA.org:ltu-38768DiVA: diva2:1012269
Conference
Nordic Geotechnical Meeting : Challanges in Nordic Geotechnics 25/05/2016 - 27/05/2016
Note
Godkänd; 2016; 20160530 (tomede)Available from: 2016-10-03 Created: 2016-10-03 Last updated: 2017-11-25Bibliographically approved

Open Access in DiVA

fulltext(537 kB)127 downloads
File information
File name FULLTEXT01.pdfFile size 537 kBChecksum SHA-512
b8d4e565d606d7dc0e2a0586157a974febe7bb8a955e29d7801bb637f655647fdd36191f557dcb19801f6cfe7759524f3363b136ecc7a6364851f295514d58f1
Type fulltextMimetype application/pdf

Authority records BETA

Edeskär, Tommy

Search in DiVA

By author/editor
Edeskär, Tommy
By organisation
Mining and Geotechnical Engineering
Geotechnical Engineering

Search outside of DiVA

GoogleGoogle Scholar
Total: 127 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: 401 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • 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