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《Chongqing Architecture》 2018-01
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Construction Technology of Blasting Demolition for Old Arch Bridge

In China,there are a variety of bridge structures,among which the arch bridge is one of the early bridge forms and is largely the masonry structure,with characteristics of a simple structure utilizing arch rings and piers to withstand the upper force,but in the early construction process there are a series of obvious problems,such as a lack of professional and technical personnel,the lining of bridges,the unclear construction management,etc.Therefore,under the new normal economic development situation,these problems must be objectively addressed and the solutions and countermeasures must be explored to promote the further development of bridge construction technology in our country.This paper mainly introduces the integrated construction technology of mechanized demolition and blasting demolition for the old arch bridge located in the city center.Combined with the complicated local environment and the structural features of the bridge itself,the top-down demolition from different layers and different demolition methods for different structural parts were adopted,achieving remarkable results in removal construction,river ways being well cleaned.It is a successful case,which can be referenced for similar projects.
【CateGory Index】: U445.6
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