WFRF:(Silfwerbrand Johan)
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New Swedish Design Method for Concrete Pavements
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- Silfwerbrand, Johan (author)
- KTH,Bro- och stålbyggnad
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- Farhang, Alavizadeh Ali (author)
- KTH,Bro- och stålbyggnad
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- Söderqvist, Johan (author)
- KTH,Bro- och stålbyggnad
- (creator_code:org_t)
- 2008
- 2008
- English.
- In: 9th International Conference on Concrete Pavements.
- Conference paper (other academic/artistic)
Abstract
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- A new concrete pavement design method is currently introduced in Sweden. It consists of two parts: (i) computations of subgrade and base distresses and (ii) computations of concrete pavement distresses. To eliminate the difference between concrete and asphalt pavement design, the first part is carried out with equal requirements, in the same manner, and with the very same computer program. The computer run also provides a coefficient of subgrade reaction that is used as input in the second part. For this part, the American FE program ISLAB2000 is used to compute stresses - both traffic and thermal stresses, simultaneously - in various locations of the concrete pavement slab. Contrary to previous Swedish tradition, both bottom-up and top-down cracking are considered in the analysis of the computations. For the pavement designer, the division into two parts will not be visible. She will use the same user-friendly computer program (that previously has only been used for flexible pavement design) for both pavement alternatives. It is the authors' hope that the selection of pavement solution for a certain case will be dependent solely on technical and economical factors and not on tradition and intensive advertising. The new design method includes a novelty concerning safety philosophy. The safety margin should be obvious and transparent and determined by the client in co-operation with the designer by selecting an appropriate safety class that is dependent on the economical consequences of a pavement failure but independent of material in the wear layer.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Infrastrukturteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Infrastructure Engineering (hsv//eng)
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- kon (subject category)
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