CANTILEVER OVERHANG ERECTION METHOD OF CORRUGATED STEEL PLATE WEB BRIDGE

摘要

PROBLEM TO BE SOLVED: To shorten a construction period of a corrugated steel plate web bridge without a large increase in erection cost in a cantilever overhang erection method of the corrugated steel plate web bridge using a mobile working vehicle.;SOLUTION: At extending an upper floor slab 51 and a lower floor slab 52 by concrete placing after connecting a corrugated steel plate N to an already erected bridge girder end, a corrugated steel plate cross beam 23 is lowered by a corrugated steel plate cross beam hanging device 17 and supported to the connected corrugated steel plate N. At this time, the front side of an upper floor slab support beam 21 is supported to the corrugated steel plate cross beam 23 through a hanging member 30. The front side of a bottom slab receiving beam 25 is supported to a second front lower cross beam 36 suspended from the corrugated steel plate cross beam 23 through a hanging member 29. Neither the upper floor slab support beam 21 nor the bottom slab receiving beam 25 is supported to a suspension arm 13 of the mobile working vehicle 10, but only a lower workbench 31 is suspended from it.;COPYRIGHT: (C)2008,JPO&INPIT