We provide the concepts of Creep and Shrinkage of the concrete, and of the Relaxation of the steel cable, and the problems deriving from them, for prestressed concrete pipes. These three phenomena in technical literature are called "slow voltage losses" and are responsible for the deterioration of the pipeline over the years. Furthermore, practical examples of breaks and a statistical analysis are provided to understand the percentage of these breaks are related to the aforementioned phenomena.
Si forniscono i concetti di Creep e Ritiro del cls, e del Rilassamento del cavo in acciaio, e le problematiche da essi derivanti, per le tubazioni in cemento armato precompresso. Questi tre fenomeni in letteratura tecnica sono denominati "Perdite lente di tensione" e sono responsabili del degrado della tubazione negli anni. Si forniscono, inoltre, esempi pratici di rotture ed una analisi statistica per capire in che percentuale queste rotture sono legate ai suddetti fenomeni.
LE PERDITE LENTE DI TENSIONE NELLE TUBAZIONI IN CEMENTO ARMATO PRECOMPRESSO
SIMEONE, STEFANO
2020/2021
Abstract
We provide the concepts of Creep and Shrinkage of the concrete, and of the Relaxation of the steel cable, and the problems deriving from them, for prestressed concrete pipes. These three phenomena in technical literature are called "slow voltage losses" and are responsible for the deterioration of the pipeline over the years. Furthermore, practical examples of breaks and a statistical analysis are provided to understand the percentage of these breaks are related to the aforementioned phenomena.I documenti in UNITESI sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
https://hdl.handle.net/20.500.14253/87322