Arch bridge reinforcing structure without interrupting traffic and construction method thereof

Abstract

The invention relates to an arch bridge reinforcing structure without interrupting traffic and a construction method thereof.The arch bridge reinforcing structure comprises a steel frame arch with hinged supports at the two ends, the hinged supports are arranged on corresponding retaining walls through vertical supporting pieces, the retaining walls are located on the front walls of corresponding existing bridge abutments, and the hinged supports are arranged on the front walls of the corresponding existing bridge abutments. The hinged supports abut against the front walls of the corresponding existing bridge abutments through the transverse supporting pieces, and the steel frame arches can abut against the existing arch rings through the vertical supporting pieces and the transverse supporting pieces. By the adoption of the structure, the bearing capacity of the arch feet is obviously improved, the structure is more suitable for the requirement for the high lifting amplitude, the reinforcing structure cannot damage the existing arch bridge, the influence on the mechanical performance of an existing arch bridge foundation and an arch ring is very small, the original bearing capacity of the existing bridge cannot be reduced during dismantling, the steel frame arch can be independently stressed, and the construction cost is reduced. When the reinforcing structure is constructed, disturbance to the existing arch bridge is small, traffic does not need to be interrupted when the arch bridge is reinforced, and the reinforcing structure is widely suitable for arch bridges of various material structures.

Description

technical field [0001] The invention relates to the technical field of bridge reinforcement, in particular to an arch bridge reinforcement structure without interrupting traffic and a construction method thereof. Background technique [0002] At present, there has been a normalized trend of transporting extra-large and extra-heavy industrial large-scale equipment (such as large-scale power generation equipment, heavy equipment and construction machinery, etc.) by road in the central and western regions. The load standard of the arch bridges built in the early stage was low, and the load of large-scale equipment transport vehicles often far exceeded the design live load of the bridge, and the effect of large-scale load was greater than the design effect of the operating bridge. Such bridges are usually demolished and rebuilt or reinforced and upgraded. [0003] At present, the commonly used reinforcement methods for arch bridges mainly include increasing the main arch sectio...

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Problems solved by technology

[0004] The purpose of the present invention is to overcome the above-mentioned deficiencies such as the reinforcement method in the prior art needs to interrupt the traffic when strengthening the arch bridge, and the reinforcement construction time period is long, the only traffic channel in the surrounding area is greatly affected, and the effect of improving the bearing capacity is unstable. Provide an arch bridge reinforcement structure without interrupting traffic and its construction method

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