Inhaul cable device for whole-hole span-by-span construction of reinforced concrete composite beam

Abstract

The invention discloses an inhaul cable device for whole-hole span-by-span construction of a reinforced concrete composite beam, and belongs to the technical field of bridge construction. The inhaul cable device comprises a pier, a beam box is erected at the top end of the pier through a bridge girder erection machine, and at least three groups of inhaul cable mechanisms for pulling flanges at thetwo sides of the top end of the beam box are arranged on a cross beam of the bridge girder erection machine; and each inhaul cable mechanism comprises a winding device with a rope and a hook connected with the free end of the rope through a connecting block, and limiting mechanisms for positioning the hooks are arranged at the bottom end of the cross beam of the bridge girder erection machine. According to the inhaul cable device, the telescopic ends of hydraulic air cylinders are rotationally connected with the connecting blocks at the hooks on the inhaul cable mechanisms, so that the hydraulic air cylinders located at the two sides of the hooks can limit the hooks on the ropes during winding and unwinding, it is guaranteed that the hooks cannot swing drastically during vertical positionadjustment, and connection between the hooks and hanging rings is facilitated; and meanwhile, it is guaranteed that the beam box cannot be staggered on the pier in the horizontal direction, and the traction effect of the inhaul cable mechanism is improved.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a cable device used for the construction of steel-concrete composite beams span-by-span. Background technique [0002] Bridge construction refers to the process of building a bridge according to the design content; it mainly refers to bridge construction technology, construction organization, construction management, construction quality, etc.; due to the steel-concrete composite beam has a series of advantages such as light structure, large spanning capacity, and fast construction speed , can meet the construction requirements of urban viaducts and long bridges across rivers and seas to the greatest extent, and has been more and more widely used in modern bridge structures. [0003] In the patent with the authorized publication number CN 207597269 U, a cable device for the construction of steel-concrete composite beams spanning across the entire hole is disclosed, wh...

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Problems solved by technology

[0003] In the patent with the authorized publication number CN 207597269 U, a cable device for the construction of steel-concrete composite beams spanning across the entire hole is disclosed, which pulls the steel beam units without support through multiple groups of cable tensioning mechanisms. In order to reduce the effect of the bridge deck and poured concrete on the steel beam unit, to ensure that the bridge construction can be carried out smoothly, but because it cannot limit the position of the cables in the cable tensioning mechanism, the cable tensioning mechanism will affect the steel beam unit. When the force of the beam unit is large and the swing range of the cable is large, the horizontal position of the steel beam unit will be dislocated on the pier, which will affect the laying quality of the steel beam unit

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