FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W192443911> ?p ?o ?g. }

• W192443911 abstract "The design and production of concrete railway sleepers requires optimization to fulfil increasing demands for faster and larger trains and to minimize safety margins. The sleepers are pretensioned to avoid cracking and increase durability. Measurements in factories situated in Vislanda and Marijampole have shown that unexplained, large prestress losses take place in the first 20 hours after the casting of concrete sleepers with the “Long line method”. More knowledge is needed to understand why these prestress losses take place, and therefore be able to meet the increasing demands for the sleepers. The aim of this master’s project was to understand why prestress losses take place during the curing of pretensioned concrete railway sleepers in a long casting bed. In order to achieve that knowledge, a literature study was carried out and a finite element model of the sleepers in a long bed was developed. The analyses were based on linear elastic analysis. The temperature change during the curing was given as an input based on measurements. Prestress losses due to thermal effects were assumed to be of most importance; losses due to other effects were not included. The bond between concrete and steel was modelled as a function of time in the numerical modelling; this was implemented through a user-supplied subroutine. The bond model assumed low bond stresses and a constant stiffness at each time step. The numerical model could describe the prestress loss behaviour in Vislanda and Marijampole. However, the magnitude of the losses in Marijampole was not fully explained. The results showed an accumulation of prestress losses towards the end of the bed, where measurements had been carried out, while the other end did not experience this accumulation effect. The analyses showed that the accumulation occurred due to the bond development, casting sequence and temperature variation along the bed. The greatest prestress losses were obtained when a large temperature increase occurred in the bed before bond developed in the last cast end. From the results it can be concluded that the prestress losses can be decreased by minimizing the casting time and having the same temperature conditions along the entire bed." @default.
• W192443911 created "2016-06-24" @default.
• W192443911 creator A5026079740 @default.
• W192443911 creator A5051281697 @default.
• W192443911 date "2014-01-01" @default.
• W192443911 modified "2023-09-24" @default.
• W192443911 title "Prestress losses in railway sleeper production with long bed systems" @default.
• W192443911 cites W141827278 @default.
• W192443911 cites W1495967699 @default.
• W192443911 cites W1516985949 @default.
• W192443911 cites W1597058801 @default.
• W192443911 cites W2046931975 @default.
• W192443911 cites W2064436518 @default.
• W192443911 cites W2130691807 @default.
• W192443911 cites W2329606370 @default.
• W192443911 cites W2894781965 @default.
• W192443911 cites W2896180980 @default.
• W192443911 cites W648115105 @default.
• W192443911 cites W1506555341 @default.
• W192443911 hasPublicationYear "2014" @default.
• W192443911 type Work @default.
• W192443911 sameAs 192443911 @default.
• W192443911 citedByCount "0" @default.
• W192443911 crossrefType "dissertation" @default.
• W192443911 hasAuthorship W192443911A5026079740 @default.
• W192443911 hasAuthorship W192443911A5051281697 @default.
• W192443911 hasConcept C104304963 @default.
• W192443911 hasConcept C111919701 @default.
• W192443911 hasConcept C127413603 @default.
• W192443911 hasConcept C135628077 @default.
• W192443911 hasConcept C159985019 @default.
• W192443911 hasConcept C187320778 @default.
• W192443911 hasConcept C190839683 @default.
• W192443911 hasConcept C192562407 @default.
• W192443911 hasConcept C205649164 @default.
• W192443911 hasConcept C2779372316 @default.
• W192443911 hasConcept C41008148 @default.
• W192443911 hasConcept C58396970 @default.
• W192443911 hasConcept C58640448 @default.
• W192443911 hasConcept C66938386 @default.
• W192443911 hasConcept C96147967 @default.
• W192443911 hasConceptScore W192443911C104304963 @default.
• W192443911 hasConceptScore W192443911C111919701 @default.
• W192443911 hasConceptScore W192443911C127413603 @default.
• W192443911 hasConceptScore W192443911C135628077 @default.
• W192443911 hasConceptScore W192443911C159985019 @default.
• W192443911 hasConceptScore W192443911C187320778 @default.
• W192443911 hasConceptScore W192443911C190839683 @default.
• W192443911 hasConceptScore W192443911C192562407 @default.
• W192443911 hasConceptScore W192443911C205649164 @default.
• W192443911 hasConceptScore W192443911C2779372316 @default.
• W192443911 hasConceptScore W192443911C41008148 @default.
• W192443911 hasConceptScore W192443911C58396970 @default.
• W192443911 hasConceptScore W192443911C58640448 @default.
• W192443911 hasConceptScore W192443911C66938386 @default.
• W192443911 hasConceptScore W192443911C96147967 @default.
• W192443911 hasLocation W1924439111 @default.
• W192443911 hasOpenAccess W192443911 @default.
• W192443911 hasPrimaryLocation W1924439111 @default.
• W192443911 hasRelatedWork W1164664604 @default.
• W192443911 hasRelatedWork W141509952 @default.
• W192443911 hasRelatedWork W1974358113 @default.
• W192443911 hasRelatedWork W2043632715 @default.
• W192443911 hasRelatedWork W2068244388 @default.
• W192443911 hasRelatedWork W2077755970 @default.
• W192443911 hasRelatedWork W2243501769 @default.
• W192443911 hasRelatedWork W2248327528 @default.
• W192443911 hasRelatedWork W2285914308 @default.
• W192443911 hasRelatedWork W2346586315 @default.
• W192443911 hasRelatedWork W2370953251 @default.
• W192443911 hasRelatedWork W2383815391 @default.
• W192443911 hasRelatedWork W2566801388 @default.
• W192443911 hasRelatedWork W2739348187 @default.
• W192443911 hasRelatedWork W2899387427 @default.
• W192443911 hasRelatedWork W2971266907 @default.
• W192443911 hasRelatedWork W3513737 @default.
• W192443911 hasRelatedWork W37779613 @default.
• W192443911 hasRelatedWork W627893723 @default.
• W192443911 hasRelatedWork W649742868 @default.
• W192443911 isParatext "false" @default.
• W192443911 isRetracted "false" @default.
• W192443911 magId "192443911" @default.
• W192443911 workType "dissertation" @default.