Prestress losses in spruce timber

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F61989100%3A27120%2F20%3A10245681" target="_blank" >RIV/61989100:27120/20:10245681 - isvavai.cz</a>
Result on the web
<a href="http://www.woodresearch.sk/wr/202004/11.pdf" target="_blank" >http://www.woodresearch.sk/wr/202004/11.pdf</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.37763/wr.1336-4561/65.4.645652" target="_blank" >10.37763/wr.1336-4561/65.4.645652</a>

Result language
angličtina
Original language name
Prestress losses in spruce timber
Original language description
Prestressing force and its change is one of the key factors that affect wooden constructions, especially those using methods of transverse prestressing. To achieve a description of a prestress force (P) in transversally prestressed wooden constructions a simulated experiment was done. Prestressing force, external temperature, and moisture were measured during 669 days. The main goal of this article was to model the primary losses of the prestress force at the spruce element of the 138 x 138 mm cross-section with the sensor installed. For this purpose, all measurements were statistically analyzed and the period of primary loss was found. During this period the prestress force was decreasing with time mainly and the influence of temperature and moisture could be omitted. Based on this analysis a mathematical model of losses of the prestress force was found as P = 8.538-0.014.day. (C) 2020 Statny Drevarsky Vyskumny Ustav. All rights reserved.
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
20500 - Materials engineering

Project
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Continuities
I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Publication year
2020
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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