Metro bridge over the Golden Horn
Coordinates: 41 ° 1 ′ 22 ″ N , 28 ° 58 ′ 0 ″ E
| Metro bridge over the Golden Horn | ||
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| Convicted | Line M2 | |
| Crossing of | Golden Horn | |
| place | Istanbul | |
| construction | Cable-stayed bridge ; Swing bridge | |
| overall length | 919 m | |
| Longest span | 180 m | |
| Clear height | 13.8 m; Clearance height 11 m |
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| start of building | 2009 | |
| completion | 2014 | |
| planner | Michel Virlogeux , Hakan Kıran, Wiecon | |
| location | ||
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The Metro Bridge over the Golden Horn ( Turkish: Haliç Metro Köprüsü ) is a cable-stayed bridge with an attached swing bridge , which crosses the Golden Horn in Istanbul between the Galata Bridge at the Bosporus and the Ataturk Bridge further inward and connects the districts of Beyoglu in the northeast and Fatih in the southwest .
description
Metro bridge
It runs the M2 line of the Istanbul Metro between Azapkapı and Unkapanı over the Golden Horn and also crosses the main streets Tersane Caddesi and Ragip Gümüşpala Caddesi, which run close to the banks .
On the bridge between the pylons of the cable-stayed bridge is the “Haliç” metro station, which is connected to the banks by wide walkways on each side of the bridge. At the station, four stairways and an elevator form the connection to the higher-lying platforms, which are protected from wind and rain by transparent, arched roofs. Two small bridges over the tracks allow you to change between the platforms. At the landside ends, both sidewalks lead into a common entrance area with information boards and ticket machines. Several escalators and paths as well as a lift lead down to the forecourt on the streets mentioned. There is a bus stop there.
The bridge is a total of 919 m long and consists of the 241 m long northeast foreland bridge, the 387 m long cable-stayed bridge, the 122 m long swing bridge connected to it and the 169 m long southwest foreland bridge. The cable-stayed bridge, and the rotary are made entirely of steel , while the approach bridges as prestressed concrete - girders are executed.
The entire bridge is kept in an inconspicuous light gray in order not to disturb the cityscape with the nearby Suleymaniye Mosque . The pylons are painted from gray to white.
Cable-stayed bridge
The cable-stayed bridge has a main opening with a span of 180 m and two secondary openings of 90 m each. A 27 m long extension creates the connection to the northeastern approach bridge.
Its two pillars consist of a steel structure with four legs that taper towards the top. They are founded on steel pipes that have been driven up to 90 m deep into the ground.
The carriageway girder is a steel, three-cell hollow box with a trapezoidal cross-section, the straps and webs of which are designed as orthotropic plates . It is 14.5 m wide and 3.7 m high. The two 4.4 m wide sidewalks are attached to the sides with cantilever girders, so that they also allow a view under the bridge. Overall, the bridge is 28.65 m wide.
The bridge has two pointed pylons in its central axis with a height of 65 m above the bridge deck. Nine ropes are anchored to them on each side, from which the deck girder hangs. The ropes are fitted with internal hydraulic dampers.
The cable-stayed bridge has a clearance height of 13.8 m; the officially approved headroom is 11 m.
Swing bridge
The swing bridge in front of the southern bank has a 70 m long and a 50 m long arm. The steel central pillar with the rotating mechanism is protected from ship collisions by a long concrete wall.
Project history
The bridge was designed by the French bridge construction engineer Michel Virlogeux , who later also designed the third Bosphorus bridge, the Yavuz-Sultan-Selim Bridge . The Turkish architect Hakan Kıran was responsible for the architectural design and construction supervision. Wiecon Consulting Engineers carried out the structural engineering. Waagner-Biro planned the swing bridge and supplied the central rotating devices. The bridge was built by a consortium made up of the Italian company Astaldi and the Turkish company Gülermak . The metal sheets for the steel bridge were supplied by Dillinger Hütte , the ropes for the bridge come from Freyssinet .
The consortium was awarded the contract to build the bridge in December 2009. The historical environment required special protective measures. Many of the pits for the foundations were dug by hand by archaeologists . On the Unkapanı side, several remains from Byzantine times were found, such as an arch and the remains of a church and a cemetery. The proximity of the Suleymaniye Mosque , which is a UNESCO World Heritage Site , led to lengthy discussions with UNESCO, as a result of which the height of the pylons in particular was reduced, their color changed from matt gold to gray and white and, finally, lower attachment points for the stay cables were chosen.
The bridge and the subway line opened on February 16, 2014 in the presence of Prime Minister Recep Tayyip Erdoğan .
Web links
- Photo with swiveled swing bridge on wenzel-consult.com
- A stay-cable bridge for the Istanbul Metro on Freyssinet.com
Individual evidence
- ↑ a b Visit on Google Street View
- ↑ a b A stay-cable bridge for the Istanbul Metro on Freyssinet.com
- ↑ Haliç 'Metro Crossing Bridge' on Nedzink.com
- ↑ Halic Metro Crossing Bridge ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice. on the website of Körfez Deniz
- ↑ a b Golden Horn swing bridge on Waagner-biro.com
- ↑ Hakan Kiran, Contemporary Buildings on Hakankiran.com
- ↑ Bridge Design on Wiecon.com
- ↑ Halic Bridge on Astaldi.com
- ↑ Halic Metro Crossing Bridge on gulermak.com
- ^ Dillinger heavy plate for the Haliç subway bridge in Istanbul on Dillinger.de
- ↑ Halic Metro Bridge on Freyssinet.com
- ↑ See Independent Assessment of the Visual Impact of the Golden Horn Metro Crossing Bridge on the World Heritage property “Historic Areas of Istanbul” . RWTH Aachen (Ed.) 2011, 256 pp. (PDF; 28.6 MB)
- ↑ E. Sibel, Onat Hattap: Impressions on a New Work on the Historical Peninsula of Istanbul: the Haliç (Golden Horn) Metro Bridge . In: Andrea Marmori, Linda Puccini, Valeria Scandellari, Silvio Van Riel (eds.): Architettura e città: Problemi di conservazione e valorizzazione . Altralinea Edizioni, Firenze 2015, ISBN 978-88-98743-57-5 , p. 461, 466 ( limited preview in Google Book search).
- ↑ Haliç, Yenikapı'yı Hacıosman'a bağladı on Hurriyet.com
