The present application relates to a kind of vertical rotation step-by-step half-through tied
arch bridge main arch ring construction method, and arch ring is divided into two half spans and is laid on two
shore approach on the
bed, adopts vertical rotation buckle and hangs
system and pulls arch ring vertical rotation, while using jacking
system and jacks arch ring to move to midspan, repeatedly jacks, vertical rotation, gradually moves two half span arch ring to midspan closure.The present application combines jacking method and vertical
rotation method organically, on the one hand, solves the problem that existing jacking method can only jacking whole span and is limited by span, on the other hand, solves the problem that existing vertical
rotation method cannot be applied when there are obstacles in arch seat position, successfully realizes large-span main arch ring jacking installation.Whether it is bridge across navigable river or bridge across deep valley, whether river
bank is gentle
terrain or steep mountain, the present application can be applied, and large equipment is less, and construction risk and cost are low.