RESEARCH ON CALCULATING THE DRAG IMPACT ON PRESTRESSING STEEL STRAND WHEN PUSHING STRANDS INTO THE DUCT IN THE CONSTRUCTION OF GIRDERS.

Abstract

                 This article presents the method of calculating the resistance between the prestressing steel strand and the duct wall, and between the strands of the same cable bundle when threading the cable into the duct. Research result is the basis for the design as well as the selection of strand pushing machines for the construction of prestressed concrete girders