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| Saadiyat Bridge. Inclined piers constructed with system formwork  500 metres off the coast of Abu Dhabi city is Saadiyat Island. In order to form a connection between both islands, the Saadiyat Bridge is currently under construction. The 1,455 metre long, technically challenging construction has an impressive width of 60 metres – one of the widest bridges in the world. It provides enough space on one level for ten car lanes as well as two railway tracks. This means that travelling time from the city centre will be reduced from more than one hour to just a few minutes. Eight foreland piers in the west and a total of eleven on Saadiyat itself serve to support the three pre-stressed concrete hollow boxes with spans ranging between 45 and 135 metres. The main bridge has a span of 200 metres with an overhead clearance of 26 metres in the bridge centre and is carried by two V-shaped, 20-metre high sets of triple identical piers per section. The inclination of each of the twelve individual supports is 27.45 degrees. The ambitious building project is being realised by a very committed project team, a consortium formed by Ed. Züblin AG and Saif Bin Darwish Civil Engineering Contractors. Within Ed. Züblin AG, project development is being handled by the company´s subsidiaries, Züblin International GmbH Stuttgart and Dywidag Bau GmbH, Bridge Construction, Nuremberg. The close co-operation of all those involved together with PERI engineers from Nuremberg, Weissenhorn and Dubai has proved to be extremely constructive both in the offer phase as well as the construction stage. This has meant that even planning changes that are made during construction do present a challenge for everyone but not, however, unsolvable problems. The PERI formwork and scaffolding solution for the inclined individual supports consists of two sets of VARIO GT 24 side formwork, a 7.76 metre wide, forward-inclined VARIO formwork element with integrated working platforms as well as a reverse-inclined raised formwork unit. This is based to a large extent on rentable standard material taken from the VARIO GT 24 girder wall formwork system and SLS heavy-duty spindles. Due to the large supporting angle, the high concreting loads are carried on the externally-positioned reverse-inclined formwork mounted on PERI UP shoring. Part of the steel girder framework installed by the contractors which cantilevers over the sea - steel profiles over 900 millimetres high - provides a safe support surface with correspondingly reliable load distribution. write your comments about the article :: © 2008 Construction News :: home page |