Bailey reverse hanging combined beam device for dismantling tied-arch bridge and dismantling method thereof

Abstract

The invention discloses a bailey reverse hanging combined beam device for dismantling a tied-arch bridge and a dismantling method thereof and belongs to the field of bridge construction. The bailey reverse hanging combined beam device for dismantling the tied-arch bridge comprises a newly built bridge and a plurality of bailey reverse hanging devices; the newly built bridge is arranged beside thetied-arch bridge to be dismantled in parallel; the plurality of bailey reverse hanging devices cross over the newly built bridge and the tied-arch bridge to be dismantled to connect the newly built bridge with the tied-arch bridge to be dismantled; the bailey reverse hanging devices are arranged in the longitudinal bridge direction in parallel at intervals; and each bailey reverse hanging device comprises a bailey beam and three groups of reverse hanging devices, wherein the three groups of reverse hanging devices are arranged on the bailey beam. The tied-arch bridge dismantling method comprises the steps of building the newly built bridge beside the tied-arch bridge to be dismantled in parallel; erecting the plurality of bailey reverse hanging devices on the newly built bridge to connectthe newly built bridge with the tied-arch bridge to be dismantled; dismantling the tied-arch bridge to be dismantled; and firstly, dismantling arch ribs in sections, and secondly, dismantling tie beams. According to the bailey reverse hanging combined beam device for dismantling the tied-arch bridge and the dismantling method thereof, the tied-arch bridge can be dismantled without a support when the tied-arch bridge needs to be dismantled in situ to be reconstructed and expanded.

Description

technical field [0001] The invention belongs to the field of bridge construction and is applicable to constructions such as arch bridge demolition. Background technique [0002] The bridges built in my country in the 20th century were old and dangerous due to their long operating years. Some bridges did not meet the service requirements due to traffic saturation and increased navigation capacity. More and more bridges needed to be demolished in situ for reconstruction and expansion. Tied arch bridges were widely used in the last century because they combined the advantages of arch bridges and girder bridges. Because the tied arch bridge is a statically indeterminate system, conventionally, when the tied arch bridge is demolished, supports are erected in the channel to support the tie bars and arch ribs, and then the arch ribs are removed in sections. [0003] Due to the continuous development and improvement of navigation channels, most of the navigable rivers are not allow...

AI Technical Summary

Problems solved by technology

[0003] Due to the continuous development and improvement of navigation channels, most of the navigable rivers are not allowed to be closed to navigation or the width of the navigation hole is reduced, which makes it impossible to support some tie-bar arch bridges when they are demolished.

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