Abstract
For the design of prestressed concrete sections, it is important to estimate the loss in initial prestress due to creep and shrinkage of concrete as well as creep (or relaxation) of prestressing wires. Many theoretical solutions of this problem have been derived on the basis of the theory of creep of concrete. But, they can be applied only to the special cases, for example, to a case where wires are arranged practically in one layer, and they are not perfectly valid for the cases where the section has wires arranged in many layers. The author derived the general solution which could be applied to any type of section with or without non-prestressing steels, described how the loss in prestress was distributed on the section and showed that the effective ratio of prestress was not always equal to the one of prestress moment. Moreover, the conventional solution was derived by modifying the theoretical solution described above.
Published Version
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call