MOMENT REDISTRIBUTION OF CONTINUOUS PRESTRESSED CONCRETE BEAMS

Abstract

the current practices of structural design, the concept of moment redistribution in conjunction with linear analysis is well known and widely accepted. There are numerous studies and various references that deal with this issue and different codes propose various provisions for the amount of permissible redistribution. To date, there is a debate on the extent of redistribution permitted by different codes of practice. The extent of moment redistribution in continuous prestressed concrete beams depends on number of factors including the amount of tension strain, compression reinforcement, cable profile as well as concrete strength. In prestressed concrete members, there is a major difference between simple and continuous construction that is the effect of the secondary moment. At ultimate limit state of design, the consideration of secondary moments is important in the design analysis for statically indeterminate continuous prestressed concrete members. Codes give different recommendations for the consideration of secondary moments at ultimate limit state. This thesis presents an experimental and analytical programs conducted