Dismantling method of overpass bridge body

Abstract

According to the method, a water mill drill is creatively adopted as a cutting tool for separating the bridge body according to the special working condition of the bridge, the drilling diameter and depth of the water mill drill are selected in a targeted mode in combination with the drilling characteristics of the water mill drill and the bridge structure, and under the condition that the construction safety is guaranteed, the construction efficiency is improved. Construction can be carried out without erecting a protective shed frame or waiting for a window period of lower threading operation, so that the demolition period of the bridge is shortened, the demolition cost is reduced, and the demolition method is suitable for demolition of the box-type bridge body under special working conditions.

Description

technical field [0001] The invention relates to the field of building construction, in particular to the field of bridge dismantling construction, in particular to a method for dismantling a beam body of an upper span bridge. Background technique [0002] With the economic development of the country and region, the advancement of urbanization, and the improvement of people's living standards, many box girder bridges have been unable to meet the current traffic demand due to the capital and planning at the time of construction. Therefore, in order to meet the needs of local economic development demand and improve the travel quality of local residents, such bridges often need to be demolished and rebuilt. [0003] Box girder flyover is a very common type of bridge, and it is also a type of bridge often encountered in the process of bridge demolition in cities. For the dismantling of box girder flyovers, according to the objective traffic demand, it can be divided into two wor...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to overcome the long construction time and high safety risks of the bridge under the special working conditions (the protective scaffolding cannot be erected, and the underpass traffic line needs to be kept in operation) in the existing bridge demolition method, and the underpass Due to the large impact on the operation of the traffic line and the uncontrolled construction period, a method for dismantling the beam body of the upper-span bridge is proposed. This method uses a water mill drill as a cutting tool, which can realize the removal of the beam body while ensuring the operation of the lower line. Rapid demolition has the advantages of scientific and reasonable, rigorous technology, strong pertinence, low construction cost and good social benefits

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