Effect of unbonded prestressing steel in terms of serviceability

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26110%2F26%3A0199869" target="_blank" >RIV/00216305:26110/26:0199869 - isvavai.cz</a>
Result on the web
<a href="https://reference-global.com/article/10.2478/cee-2026-0032" target="_blank" >https://reference-global.com/article/10.2478/cee-2026-0032</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.2478/cee-2026-0032" target="_blank" >10.2478/cee-2026-0032</a>

Result language
angličtina
Original language name
Effect of unbonded prestressing steel in terms of serviceability
Original language description
Prestressed concrete is one of the most important construction technologies, which has had a significant impact on the development of bridge construction and other areas. It utilizes the advantages of concrete itself, specifically its compressive strength, in combination with high tensile strength of prestressing steel thereby significantly increasing the ultimate strength of structure. By applying compressive force to the concrete through prestressing tendons, a compressive reserve is created in areas subject to tensile stressed under loading, which also helps to reduce deformations and crack formation, this is described and illustrated in more detail in chapter 2. An example of this is the additional strengthening of an existing bridge structure using external (unbonded) prestressing steel, which, according to some studies (Naaman & Alkhairi, 1991), can increase the load capacity by several times compared to the original design. However, prestressed concrete structures must meet not only the ultimate limit state (ULS) requirements-preventing collapse due to loss of load capacity, but also the serviceability limit state (SLS), which governs criteria such as deflections and crack widths, ensuring the structure remains safe and functional throughout its service life.
Czech name
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Czech description
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Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20102 - Construction engineering, Municipal and structural engineering

Project
<a href="/en/project/CK04000205" target="_blank" >CK04000205: Optical monitoring of the dynamic spectrum of prestressed bridges</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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