PRESTRESSED STEEL GIRDER

摘要

PURPOSE: A prestressed steel girder is provided to remarkably increase a span and to easily perform a maintenance work by easily re-tensing a tendon. CONSTITUTION: A prestressed steel girder comprises a first section steel(200), a second section steel(300), a third section steel(400), a first saddle(510), a fourth saddle(540), a second saddle(520), a third saddle(530), first tendons(610a,610b), a second tendon(620), and third tendons(630a,630b). The second and third section steels are coupled to both ends of the bottom of the first section steel. The first and fourth saddles are installed in the second and third section steels. The second and third saddles are arranged between the second and third section steels. The first tendons connect the first and second saddles. The second tendon connects the second and third saddles. The third tendons connect the third and fourth saddles.