Deck type arch bridge unbalanced horizontal rotation system and rotation construction method

Abstract

The invention relates to a deck type arch bridge unbalanced horizontal rotation system and a rotation construction method and aims at effectively controlling construction risk, greatly reducing investment of a large-scale temporary project and enabling rotation construction to be simpler and more convenient, more economic, safer and more reliable. The deck type arch bridge unbalanced horizontal rotation system comprises a heading wall, a hanging wall, a dorsal cord, a buckling cable, a rotational spherical hinge, a traction system and a counterweight water tank, wherein the heading wall is also taken as an arch support foundation and is located on a foundation, and an annular slideway, a jack counterforce seat and traction counterforce seats are arranged on the heading wall; the hanging wall is in charge of supporting a juncture pier and a half-span main arch ring; the upper end of the dorsal cord is anchored at a top cap of the juncture pier, the lower end of the dorsal cord is anchored on the bottom surface of the tail of the hanging wall; the buckling cable and the half-span main arch ring are suspended on the juncture pier by virtue of the buckling cable; the rotational spherical hinge is composed of a lower spherical hinge surface, an upper spherical hinge surface and a locating shaft and is arranged between the heading wall and the hanging wall, and the axis of the locating shaft is located at the center of the spherical hinge surface; the traction system comprises a traction rope and a continuous jack, one end of the traction rope is anchored in concrete of the hanging wall, surrounds a rotary table at the bottom of the hanging wall by 1-2 circles and then passes through the traction counterforce seats distributed on the top surface of the heading wall in pairs to be connected with the continuous jack, and the counterweight water tank is arranged on the top surface of the tail of the hanging wall.

Description

technical field [0001] The invention relates to bridge engineering, in particular to an unbalanced horizontal swivel system and a construction method of an upwardly supported arch bridge. Background technique [0002] Arch bridge is an ancient bridge type with strong vitality. With the upsurge of my country's transportation construction, more long-span arch bridges spanning existing roads, railways, valleys, and rivers need to be built. The main types are concrete-filled steel tube arch bridges, steel box arches, steel truss arches, and concrete arch bridges. Especially in the difficult and dangerous mountainous areas and river valleys, it has an absolute advantage in building arch bridges. [0003] At present, the construction methods of such bridges generally adopt the cantilever pouring method, cantilever assembly method, full hall support method, cable-stayed buckle-hanging method, etc. Generally speaking, the construction of arch bridges is less economical due to the ...

AI Technical Summary

Problems solved by technology

Generally speaking, the construction of arch bridges is less economical due to the large investment in the adjacent project.

Moreover, the workload of high-altitude operations is large, the quality control is difficult, and the construction safety risk is high.

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