Thick-walled cylinder theory applied on a conical wedge anchorage: Research report with Matlab implementation documentation

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Bennitz, AndersLuleå tekniska universitet,Byggkonstruktion och -produktion (author)

Thick-walled cylinder theory applied on a conical wedge anchorage : Research report with Matlab implementation documentation

BookEnglish2010

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2010
53 s.
electronicrdacarrier

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LIBRIS-ID:oai:DiVA.org:ltu-23287
https://urn.kb.se/resolve?urn=urn:nbn:se:ltu:diva-23287URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:vet swepub-contenttype
Subject category:rap swepub-publicationtype

Notes

Godkänd; 2010; Bibliografisk uppgift: Förhandsexemplar av kommande artikel utökad med detaljerad dokumentation av Matlab-implementering av en algoritm som presenteras i artikeln; 20100601 (grip)
Conical wedge anchorages are frequently used to anchor steel tendons in prestressing applications within the construction industry. To replace the steel tendons with non-corrosive and low weight FRPs (Fiber Reinforced Polymers), the different mechanical interactions between the steel and FRPs call for further development of the anchorage.In this paper, we derive and examine an analytical model for the internal stresses and strains within the anchorage for a prescribed presetting distance. This model is derived from the theory of thick walled cylinders under the assumptions regarding plane stress and axial symmetry. We simplify the resulting system of ten nonlinear equations and derive a method for solving them numerically. A comparison of plotted results for three different angles on the wedge's outer surface and six different presetting distances follows.These results are also compared to both axi-symmetric and 3D FE (Finite Element) models. Analytical and FE axi-symmetric models show good correspondence, though compared to the 3D FE model, they show a clear difference in the predicted radial stress distribution on the FRP. Thus, the derived analytical model can be a useful and fasteralternative to FE modeling of axi-symmetric anchorages. However, the model is of more restricted value and should be complemented by, for example, 3D FE models for other designs.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Samhällsbyggnadsteknik Infrastrukturteknik hsv//swe
ENGINEERING AND TECHNOLOGY Civil Engineering Infrastructure Engineering hsv//eng
NATURVETENSKAP Matematik Matematisk analys hsv//swe
NATURAL SCIENCES Mathematics Mathematical Analysis hsv//eng
Structural Engineering
Konstruktionsteknik
Matematik
Mathematics

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Grip, NiklasLuleå tekniska universitet,Matematiska vetenskaper(Swepub:ltu)grip (author)
Schmidt, Jacob W.Department of Civil Engineering, Technical University of Denmark (author)
Luleå tekniska universitetByggkonstruktion och -produktion (creator_code:org_t)

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Civil Engineerin ...; and Infrastructure E ...

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By the university: Luleå University of Technology

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