| 摘要 |
A tapered cross section U-type support girder beam of the temporary bridge is provided that the construction cost can be cut down since the steel amount can be minimized and the span can be lengthened. A tapered cross section U-type support girder beam of the temporary bridge comprises a pair of cover plate(11) connected to a pair of central part I-beam girders, a tapered cross section web plate(12) in which one of more fixing plates(124) are equipped, and which fixes a cross beam(30), and a bottom plate(13) in which an incline(131) and a bottom part are equipped. The tapered cross section web plate move span central part moment to the support since the cross section of tapered cross section web plate is larger than the cross section in the web of central part I-beam girders. The bottom part of the bottom plate is fixed to the upper end of the support bent. |
