公开(公告)号：US3790657A

公开(公告)日：1974-02-05

申请号：US3790657D

申请日：1971-12-15

Applicant: INST POLITEHNIC IASI

Inventor： LEONTE C

IPC: E04C3/26 ,  E04C5/12 ,  E04C5/16 ,  E04C3/10 ,  E04C5/08

CPC classification number: E04C5/165 ,  E04C3/26 ,  E04C5/122

Abstract: Beams are assembled at grade level from a multiplicity of precast concrete elements which are cemented together at their joints by mortar and, after the mortar has hardened, tension is applied to a cable extending through a channel of the beam formed by aligned passages of the individual elements. The tension is applied by relatively displacing wedge members of a removable assembly at an emergent end of the cable and the beams can then be erected. Externally threaded rings on the emergent ends of the cables of a pair of spacedly aligned beams are threaded into a pipe after a mortar between the beams has hardened, thereupon transmitting tensile force between the cables. The wedge assembly is then removed and the space around the cables and the pipe, and the space occupied by the wedge assembly, is filled with concrete.