To provide a girder setting method for setting a girder by using a minimum working space in a short construction period.
A suspension device 10 having a step rod type hydraulic jack 11 for expanding and contracting a step rod 13 is set on a suspension device mount 9 which is arranged on the upper surface 6a of the end 5a of an existing girder 5. Then a girder steady rest 15 is fixed to the lower surface 4b of the end 3a of a new girder 3 mounted to a mount 21 on a road 1, and the lower end of the step rod 13 is fixed to the upper surface 4a of the new girder end. Further an elevation device 27 for elevating and lowering along a leg 23 with a driving section 25 holding the new girder 3 is set at the end 3b of the new girder 3. Furthermore the new girder 3 is elevated to a predetermined height by using the suspension device 10 and the elevation device 27 to connect the end 5a of the existing girder 5 and the end 3a of the new girder 3 to each other. Thereafter the end 3b of the new girder 3 is temporarily borne by a stand 29 set under the end 3b of the new girder 3, and a pier 17b is constructed under the end 3b of the new girder 3, to thereby erect the end 3b of the new girder 3 on the pier 17b.
MIZUNO MASAHIKO
MASUDA MASAHIRO
TANAKA KOICHI
SANO NOBUHIDE
YOSHIKAWA TADASHI
MUROI SHINJI
NIPPON STEEL ENG CO LTD
NIPPON STEEL BRIDGE CO LTD