The deep column station is a type of subway station, consisting of a central hall with two side halls, connected by ring-like passages between a row of columns. Depending on the type of station, the rings transmit load to the columns either by "wedged arches" or through purlin

Purlin

In architecture or structural engineering or building, a purlin is a horizontal structural member in a roof. Purlins support the loads from the roof deck or sheathing and are supported by the principal rafters and/or the building walls, steel beams etc...

s, forming a "column-purlin complex."

The fundamental advantage of the column station is the significantly greater connection between the halls, compared with a pylon station

Pylon station

The pylon station is a type of deep underground subway station. The basic distinguishing characteristic of the pylon station is the manner of division of the central hall from the station tunnels...

.

The first deep column station in the world is Mayakovskaya, opened in 1938 in Moscow

Moscow

Moscow is the capital, the most populous city, and the most populous federal subject of Russia. The city is a major political, economic, cultural, scientific, religious, financial, educational, and transportation centre of Russia and the continent...

.

Column-wall station

One variety of column station is the "column-wall station." In such stations, some of the spaces between the columns are replaced with walls. In this way, the resistance to earth pressure is improved in difficult ground environments. Examples of such stations in Moscow are Krestyanskaya Zastava

Krestyanskaya Zastava

Krestyanskaya Zastava is a Moscow Metro station in the Yuzhnoportovy district, Central Administrative Okrug, Moscow. It is on the Lyublinsko-Dmitrovskaya Line, between Rimskaya and Dubrovka stations...

 and Dubrovka. In Saint Petersburg

Saint Petersburg

Saint Petersburg is a city and a federal subject of Russia located on the Neva River at the head of the Gulf of Finland on the Baltic Sea...

, Komendantsky Prospekt

Komendantsky Prospekt (Saint Petersburg Metro)

Komendantsky Prospekt is a station on the Frunzensko-Primorskaya Line of Saint Petersburg Metro, opened on April 2, 2005....

 is an example.

See also

• Shallow column station
  Shallow column station
  The shallow column station is a type of construction of subway stations, with the distinguishing feature being an abundance of supplementary supports for the underground cavity...
  
  
• Pylon station
  Pylon station
  The pylon station is a type of deep underground subway station. The basic distinguishing characteristic of the pylon station is the manner of division of the central hall from the station tunnels...
  
  
• Single-vault station
  Single-vault station
  The single-vault deep underground station is a type of subway station.The construction of a single-vault station consists of a single wide and high underground hall, in which there is only one vault . The first single-vault stations in the USSR were built in Leningrad in 1975: Politekhnicheskaya...