پل جدید دبی

Here are the latest renderings plus recent construction shots of Sheikh Zayed Bridge, a major infrastructure project that will connect Abu Dhabi to the other Emirates on the mainland.



The project is designed by architect Zaha Hadid, who is on the advisory panel of the International Design Forum and will speak at the event in Dubai between 27 and 29 May।

Below is a full project description from the architect:

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RISING FROM THE DUNES

The UAE has a highly mobile society that requires a new route around the Gulf South shore, connecting Abu Dhabi city and the highways to other emirates, notably Dubai and the Northern Emirates। In 1967 a steel arch bridge was built to connect the fledgling city of Abu Dhabi island, to the mainland followed by a second bridge built in the seventies, connecting downstream at the south side of Abu Dhabi Island।

The location of the new (third) Gateway Crossing, close to the first bridge, is critical in the development and completion of the highway system. Conceived in an open setting, the bridge has the prospect of becoming a destination in itself and a potential catalyst in the future urban growth at the mainland tip of Abu Dhabi Island. The need for a third crossing to Abu Dhabi Island was first realised 10 years ago at a time when the two other bridge

s – the four-lane Maqta Bridge and the six-lane Mussafa Bridge - provided access to the capital.

In 1994 engineers were first invited to submit tenders for the new crossing, and after re-tenders and re-submissions and a design competition High-Point Rendel’s tender was selected as the most favourable। By 1997 the Client - the Works Department of Abu Dhabi - decided that the Gateway Bridge would be a ‘landmark Structure’ and invited architect Zaha Hadid to submit proposals. Zaha Hadid’s special architectural design for the bridge makes for a challenging assignment.




A collection, or strands of structures, gathered on the shore, are lifted and ‘propelled’ over the length of the channel। A sinusoidal waveform provides the structural silhouette shape across the channel। The mainland is the “launch pad” for the bridge structure emerging from the ground । The road decks are cantilevered on each side of the rising and falling spine structure. Steel arches rise and spring from concrete piers laid asymmetrically, in length, between the road decks. The main bridge arch structure rises to a height of 60m above water level with the road crowning at 20m above mean water level.



The geometry of the steel arches and the concrete piers made it necessary to develop a highly detailed computer model of the bridge in order to determine its behaviour। S tructural Engineers COWI, hired by the Client to independently check if the bridge fulfils the design requirements, have used the Integrated Bridge Design and Analysis System (IBDAS) programme developed by them. IBDAS is a unique programme that allows 3D analysis models to be developed based on detailed geometric models of the bridge – including arches and girders.

In addition, the programme features a wide range of analysis procedures for verification of the effects of e।g. earthquakes, strong winds, ship collisions and heavy traffic crossing the bridge. The bridge is about 61m in width and 842m in length, with a central steel arch span of 234m, with their cross-sections measuring up to 6m x 8m. The central pier alone contains enough concrete to cover a football pitch to a height of five metres.



The first phase involved the 3.8km approach to the bridge from the Dubai road on the Mainland and included a 350m seven-span viaduct as well as a 200m two-lane link viaduct. The second phase, scheduled to end this year, provides the 2.8km link to the bridge from the Eastern Ring Road on Abu Dhabi Island, and includes a 280m five-span and a further 300m five-span link viaduct. The 1.4 km section of the three-part scheme, costing US$ 175m, involves the crossings of the Maqta channel and includes the main gateway bridge with an overall length of 845m. The new crossing which will provide a four-lane dual carriageway with two hard shoulders and pedestrian walkways has been designed to the recently published AASHTO LRFD standard.