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

A technology for supporting mechanisms and arch bridges, applied in infrastructure engineering, arch bridges, bridges, etc., can solve problems such as difficulty in dismantling, restricting the lower space of arch bridges, and damage to old bridges, so as to increase the safety reserve of bridge demolition and reduce potential safety hazards. , reduce the effect of rebound deformation

CN113802478AActive Publication Date: 2021-12-17HEFEI UNIV OF TECH +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2021-12-17

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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.
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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...

Examples

Embodiment

[0033] See figure 1 and Figure 4 , a device for removing the deck structure of an arch bridge based on the supporting force of the arch rib, including a bracket and a lifting mechanism;

[0034] The support includes a pair of steel pipe pile groups symmetrically arranged on both sides of the arch bridge body, and each steel pipe pile group includes more than four supporting piers 1 distributed along the direction of the arch bridge body; The lower parts of the corresponding arch ribs 22 are connected by Bailey frames;

[0035] Each supporting pier 1 includes at least two steel pipe piles 11, and is vertically distributed on both sides of the corresponding arch bridge longitudinal beam 21; the pile top of each steel pipe pile exceeds the height of the arch rib 22 by 2cm to control the length of the steel pipe pile .

[0036] See figure 2 and 3 The upper ends of the corresponding pair of steel pipe piles on both sides of the arch bridge longitudinal girder 21 are provided...