A hoisting method for a y-shaped bridge deck hoisting device for road-rail dual-purpose bridges

Abstract

The invention provides a Y-shaped highway and railway combined bridge deck slab lifting device and method and belongs to the technical field of road bridge construction. The device comprises two girders and two crossbeams. The girders are fixedly connected through the crossbeams. The girders stretch across two adjacent piers. The first pier is arranged below the left side of the girders. The second pier is arranged below the right side of the girders. A highway bridge deck is arranged above the first pier. A hydraulic tail landing leg and a girder movement mechanism are arranged at the positions, above the highway bridge deck, on the girders. A girder movement mechanism is arranged at the position, above the second pier, on the girders. A front joist barrow and a rear joist barrow are further arranged between the two girders. When railway bridge deck slabs are laid, a first channel girder is lifted and placed on an upper bent cap of the piers, the lifting space large enough is saved for lifting a second channel girder, and the second channel girder is convenient to lift. After the second channel girder is aligned to the position and falls, the first channel girder is aligned to theposition and falls.

Description

technical field [0001] The invention belongs to the technical field of road and bridge construction, and in particular relates to a hoisting method of a Y-shaped bridge deck hoisting device for road-rail dual-purpose bridges. Background technique [0002] Due to its unique structural characteristics, the highway dual-purpose bridge allows the joint operation of highways and railways, which not only saves resources, but also obtains great economic benefits. It is very common in bridge construction. The piers of the traditional road-rail bridge are H-shaped, the upper girder of the bridge pier is longer, and the lower beam of the bridge pier is shorter than the upper girder, but the difference is not too big. In the existing design, the piers of some road-rail bridges are Y-shaped, that is, the length of the upper cover beam of the bridge pier is much longer than the length of the lower beam. When laying the channel girder of the railway bridge, due to the special structure o...

AI Technical Summary

Problems solved by technology

When laying channel girders of railway bridges, due to the special structure of the bridge piers, the top width is narrow and the bottom is narrow, so the hoisting space of the channel girders is very limited

In particular, when the first channel beam is laid, due to the obstruction of the first channel beam, the hoisting space of the second channel beam is even narrower, which makes hoisting very inconvenient and difficult

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