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Elmadağ Bridge
The Elmadağ Bridge (), officially designated as Viaduct 15 () or V15, is a railway bridge near Kırıkkale, Turkey, on the Ankara-Sivas high-speed railway. With a total length of and consisting of 22 spans, the bridge crosses the Kızılırmak River as well as the Trans-Anatolian railway. Elmadağ Bridge is also the highest railway bridge in Turkey, standing tall. The bridge is one of four viaducts between Kırıkkale and Elmadağ, with a total length of . It opened on 26 April 2023, along with the Ankara-Sivas high-speed railway. References See also *Yüksek Hızlı Tren *Sakarya Viaduct The Sakarya Viaduct () is a long railway bridge carrying the Ankara-Istanbul high-speed railway across the Sakarya River and its adjacent plain approximately west of Polatlı, Turkey. The bridge is the fourth longest bridge in Turkey after the ... {{DEFAULTSORT:Elmadağ Bridge Railway bridges in Turkey Buildings and structures in Kırıkkale Province Transport in Kırıkkale Pr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kızılırmak River
The Kızılırmak (, Turkish language, Turkish for "Red River"), once known as the Halys River () and Alis River, is the longest river flowing entirely within Turkey. It is a source of hydroelectric power and is not used for navigation. Geography The Kızılırmak flows for a total of , rising in Eastern Anatolia around , flowing first to the west and southwest until , then forming a wide arch, the "Halys bend", flowing first to the west, then to the northwest, passing to the northeast of Lake Tuz (''Tuz Gölü'' in Turkish), then to the north and northeast, where it is joined by its major tributary, the Delice River (once known in Greek as the Cappadox river) at . After zigzagging to the northwest to the confluence with the Devrez River at , and back to the northeast, it joins the Gökırmak (Sky ''River'' in Turkish) before finally flowing via a wide Kızılırmak Delta, delta into the Black Sea northwest of Samsun at . Delta History The Hittites called the river the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turkish State Railways
The State Railways of the Republic of Turkey (), abbreviated as TCDD, is a government-owned national railway company responsible for the ownership and maintenance of railways in Turkey, as well as the planning and construction of new lines. TCDD was formed on 4 June 1929 as part of the nationalisation of railways in Turkey. The Turkish State Railways owns and maintains all public railways in Turkey. This includes railway stations, ports, bridges and tunnels, yards and maintenance facilities. In 2016, TCDD controlled an active network of of railways, making it the 22nd-largest railway system in the world. Apart from railway infrastructure, TCDD also owns several rail transport companies within Turkey as well as a 50% share of the İzmir-area commuter rail system, İZBAN. Prior to 2017, TCDD also operated all railways in Turkey. However, with the government taking steps to privatise some of the Turkish railway network, rolling stock and operations were handed over to TCDD Tra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Reinforced Concrete
Reinforced concrete, also called ferroconcrete or ferro-concrete, is a composite material in which concrete's relatively low tensile strength and ductility are compensated for by the inclusion of reinforcement having higher tensile strength or ductility. The reinforcement is usually, though not necessarily, steel reinforcing bars (known as rebar) and is usually embedded passively in the concrete before the concrete sets. However, post-tensioning is also employed as a technique to reinforce the concrete. In terms of volume used annually, it is one of the most common engineering materials. In corrosion engineering terms, when designed correctly, the alkalinity of the concrete protects the steel rebar from corrosion. Description Reinforcing schemes are generally designed to resist tensile stresses in particular regions of the concrete that might cause unacceptable cracking and/or structural failure. Modern reinforced concrete can contain varied reinforcing materials made o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
25 KV AC
Railway electrification systems using alternating current (AC) at are used worldwide, especially for high-speed rail. It is usually supplied at the standard utility frequency (typically 50 or 60Hz), which simplifies traction substations. The development of 25kV AC electrification is closely connected with that of successfully using utility frequency. This electrification is ideal for railways that cover long distances or carry heavy traffic. After some experimentation before World War II in Hungary and in the Black Forest in Germany, it came into widespread use in the 1950s. One of the reasons it was not introduced earlier was the lack of suitable small and lightweight control and rectification equipment before the development of solid-state rectifiers and related technology. Another reason was the increased clearance required under bridges and in tunnels, which would have required major civil engineering in order to provide the increased clearance to live parts. Where existin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
OHLE
An overhead line or overhead wire is an electrical cable that is used to transmit electrical energy to electric locomotives, Electric multiple unit, electric multiple units, trolleybuses or trams. The generic term used by the International Union of Railways for the technology is ''overhead line''. It is known variously as overhead catenary, overhead contact line (OCL), overhead contact system (OCS), overhead equipment (OHE), overhead line equipment (OLE or OHLE), overhead lines (OHL), overhead wiring (OHW), traction wire, and trolley wire. An overhead line consists of one or more wires (or Overhead conductor rail, rails, particularly in tunnels) situated over rail tracks, raised to a high electrical potential by connection to feeder stations at regularly spaced intervals along the track. The feeder stations are usually fed from a High voltage, high-voltage Electricity distribution, electrical grid. Overview Electric trains that collect their current from overhead lines use a de ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Doğuş Group
Doğuş Holding A.Ş. (''Doğuş Group'') is one of the largest private-sector conglomerates in Turkey, with a portfolio of 250 companies in 7 industries, including high-end car dealerships, retail stores, restaurants, cafés, construction companies, radio stations, TV channels and tourism businesses. The group used to own one of Turkey's largest private banks, Garanti, now part of BBVA. Background Its foundations were originally laid in 1951 when Ayhan Şahenk made his first investments in the construction sector and transformed Doğuş Construction into a leading builder of Turkish roads, ports and hospitals. Doğuş Construction was founded June 17, 1966, the same year Antur Tourism was founded and Club Alantur in Alanya was acquired. He diversified into banking in the late 1970s. While Turkey evolved from a state-controlled economy toward market capitalism in the 1980s, he branched into importing and joint ventures in automotive, tourism and food, with giants like Volkswagen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kırıkkale
Kırıkkale is a city in the Central Anatolia Region, Turkey, Central Anatolia region of Turkey. It is the seat of Kırıkkale Province and Kırıkkale District.İl Belediyesi Turkey Civil Administration Departments Inventory. Retrieved 1 March 2023. Its population is 186,960 (2022). It is located 80 km east of Ankara which is the capital city of Turkey. The name of the city means ''broken castle''. The town of Kırıkkale is located on the Ankara-Kayseri railway near the Kızılırmak River in central Turkey. Formerly a village, it owes its rapid rise in population mainly to the establishment of steel mills in the 1950s. These works, among the largest in the country, specialize in high-quality alloy steel and machinery. In the 1960s, chemical plants were added and in 1986, the Tüpraş Kırıkka ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Turkey
Turkey, officially the Republic of Türkiye, is a country mainly located in Anatolia in West Asia, with a relatively small part called East Thrace in Southeast Europe. It borders the Black Sea to the north; Georgia (country), Georgia, Armenia, Azerbaijan, and Iran to the east; Iraq, Syria, and the Mediterranean Sea to the south; and the Aegean Sea, Greece, and Bulgaria to the west. Turkey is home to over 85 million people; most are ethnic Turkish people, Turks, while ethnic Kurds in Turkey, Kurds are the Minorities in Turkey, largest ethnic minority. Officially Secularism in Turkey, a secular state, Turkey has Islam in Turkey, a Muslim-majority population. Ankara is Turkey's capital and second-largest city. Istanbul is its largest city and economic center. Other major cities include İzmir, Bursa, and Antalya. First inhabited by modern humans during the Late Paleolithic, present-day Turkey was home to List of ancient peoples of Anatolia, various ancient peoples. The Hattians ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Trans-Anatolian Railway
The Trans-Anatolian Railway is the unofficial name for a series of railway lines crossing Anatolia in Turkey. The line starts at Haydarpaşa in Istanbul and ends at Doğukapı before the Turkish/Armenian border. The Trans-Anatolian Railway consists of these three lines: *Istanbul–Ankara railway * Ankara–Kars railway *Kars–Gyumri–Tbilisi railway - Between Kars and Doğukapı. History The railway was constructed by three different companies over a period of 68 years. The first part of the railway was constructed between 1871 and 1872. This was a long line between Haydarpaşa and Pendik, in Istanbul. - ''trainsofturkey.com'' The line was built by the . The Ottoman Empire extende ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Yüksek Hızlı Tren
Yüksek Hızlı Tren or YHT () is a high-speed rail service operated by TCDD Transport in Turkey. Branded as "YHT", they are TCDD Transport's flagship passenger train service and the only high-speed rail service in the country. As of 2025, the network spans and serves major cities like Istanbul, Ankara, Eskişehir, İzmit, Konya, and Sivas. Expansion of the system is underway and the network is expected to reach Edirne, Afyonkarahisar, Adana, and İzmir in the 2020s. High-speed rail in Turkey was originally planned to be built as early as 1975, but it wasn't until 2003 that the construction of the Ankara-Istanbul high-speed railway began. The first section was completed in 2007, between Eskişehir and Esenkent with passenger operations beginning on 13 March 2009 between Eskişehir and Ankara. On 23 August 2011, the Turkish State Railways inaugurated its Polatlı-Konya high-speed railway, second high-speed railway to Konya and on 25 July 2014, the railway was opened to Istanbul ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
