Arch bridge deck structure dismantling device based on arch rib supporting stress

Abstract

The invention relates to the technical field of bridge construction, in particular to an arch bridge deck structure dismantling device based on arch rib supporting stress. The device comprises a bracket and a hoisting mechanism; the bracket comprises a pair of steel pipe pile sets symmetrically arranged on the two sides of an arch bridge body, and each steel pipe pile set comprises four or more supporting piers distributed in the direction of the arch bridge body. Each supporting pier at least comprises two steel pipe piles; the hoisting mechanism comprises supporting beams which are uniformly distributed on the arc-shaped sections of the arch ribs, each supporting beam is transversely arranged in parallel to the arch bridge, the lower end of each supporting beam is fixedly connected with the upper end of the corresponding arch rib through a pair of supporting mechanisms, and an electric hoist crane is hung on each supporting beam to hoist all demolition parts of the bridge floor structure of the arch bridge. Therefore, the original bearing capacity of the arch rib of the old arch bridge is fully utilized, the supporting force of the suspension beam of the electric hoist crane is provided, bridge deck structure dismantling operation is carried out, use of large mechanical equipment is reduced, and the device has important significance on dismantling of the bridge deck structure of the arch bridge.

Description

technical field [0001] The invention relates to the technical field of bridge construction, in particular to a device for removing the deck structure of an arch bridge based on the supporting force of arch ribs. Background technique [0002] With the rapid development of the economy, the traffic volume has increased rapidly. The original old highway bridges can no longer meet the existing traffic needs. In addition, the original design bearing capacity of the old bridges is insufficient, the operation time is long, and the bridges lack good protection measures, etc. The reason is that old bridges often have different degrees of damage, and their safety performance cannot be effectively guaranteed. Therefore, old bridges need to be demolished and rebuilt. [0003] The stress system of the arch bridge is complex, and the dynamic balance of the arch bridge structure must be maintained during the demolition process, which makes demolition difficult. Difficult and heavy workload...

AI Technical Summary

Problems solved by technology

[0002] With the rapid development of the economy, the traffic volume has increased rapidly. The original old highway bridges can no longer meet the existing traffic needs. In addition, the original design bearing capacity of the old bridges is insufficient, the operation time is long, and the bridges lack good protection measures, etc. The reason is that old bridges often have different degrees of damage, and their safety performance cannot be effectively guaranteed. Therefore, old bridges need to be demolished and rebuilt.

[0003] The stress system of the arch bridge is complex, and the dynamic balance of the arch bridge structure must be maintained during the demolition process, which makes demolition difficult. Difficulty and workload

[0004] The traditional bridge demolition work often uses support removal, which refers to the construction of supports, and the removal of arch bridge beams by manual or mechanical means. The support structure often used in this method is a full-height support, which greatly limits the space under the arch bridge and is not conducive to mechanical equipment construction. Second, crawler cranes are often used in construction to remove beams of arch bridges. This type of method requires a large space for large-scale machinery and equipment construction, and takes a long time. It has a great impact on the traffic and buildings in the adjacent area. Pollution is caused, and a great safety hazard is also buried in the bridge demolition operation.

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