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- W2371307964 abstract "The main bridge of the north bridge of Xiazhang Sea-Crossing Bridge is a multi-span semi-floating system continuous cable-stayed bridge with double pylons and double cable planes.The main girder of the bridge employs the streamlined flat closed steel box girder that has totally 99 segments,of which 9 segments are arranged in the pier top areas.After analysis and comparison of the different erection schemes,it was determined that the scheme of erecting the steel box girder in the pier top areas,using the non-luffing cranes aided by the movable scaffoldings should be applied.To achieve the simple operation of position changing of the scaffoldings and to ensure that the deformation process of the scaffoldings was smooth,the deformation and load-bearing conditions of the scaffoldings were safe,the movable triangle scaffoldings were arranged in the pylon pier top areas and the positioning changing of the scaffoldings was to be realized,using the hydraulic control system and the upper and lower sliding blocks.In the other pier top areas,the movable gangway beams were arranged and the position changing of the scaffoldings there was to be realized,using the winches and two sets of pulley blocks.To facilitate the shifting of the crane in the area of a pylon,a crane base that was 17 m long and 3.4 m high was installed.For the erection of the girder in the pylon pier top areas,the segments of the girder were successively lifted,pushed and slid in place while for the erection of the girder in the auxiliary and transition pier top areas,the segments were erected by the cantilever assembling method." @default.
- W2371307964 created "2016-06-24" @default.
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- W2371307964 date "2012-01-01" @default.
- W2371307964 modified "2023-09-23" @default.
- W2371307964 title "Erection Scheme for Steel Box Girder in Pier Top Areas of Cable-Stayed Bridge of North Bridge of Xiazhang Sea-Crossing Bridge" @default.
- W2371307964 hasPublicationYear "2012" @default.
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