设计单位 kiessler architekten GmbH
The project is located near the eastern train station of Munich. Evidently the special quality of this site was not recognized for a long time, otherwise it would not have been vacant for half a century, after the old building fabric was destroyed in the Second World War. Yet this site is directly connected to the suburban railway and the Middle ring; the city center is within walking distance. At the end of 20th century, Telekom organised a architecture competition, decided to establish its new Munich central office here, with 3,000 employees.
The high-rises that would have been permitted on Telekom's site when the competition had been decided would have towered above the state parliament and thus destroyed the sightlines on Maximilianstrasse. That is why we proposed buildings only 50 meters tall. This type of building, with about 12 to 15 floors, was common in the centers of many European citieduring the Wilhelmine period. On exemplary case in Munich is Hermann Leitensdorfer's technical City Hall of 1926.
Five pairs of towers of this height are lined up one behind the other and connected by footbridges to a linear city of offices, which is oriented not around the orthogonal structure of the neighborhood but much more around the diagonal course of the accompanying train line. As a counterpoint to the linear structure of the main complex, a six-story round building oriented toward the Mittlerer Ring is located on the site.
Approximately three-fourths of the lot is designed to be a park open to the public. Straight paths connect the angular access road to the path for pedestrians and bikes that follows the tracks. In addition to a footbridge on the second floor, the give pairs of towers are connected via a footbridge on the fifteenth floor — the so-called Sky Lounge. There are also a connecting passageway on the first underground floor that runs the full length of the buildings and a connection on the garage floor below that. The seventh and eleventh floors have footbridges for service personnel to access the recooling systems and air conditioners. Hence all of the office towers are tightly networked to one another.
With floor plans of 13.5 by 24 meters each, the fifteen story office towers, intended for use as large or group rooms, for layouts based on a central aisle with cellular offices on either side, or for multipurpose offices. Exterior wallof large-scale prefabricated concrete parts are combined with flat ceilings of concrete poured on site to form torsion-resistant boxes; as a result, there is no need for additional reinforcing structures. In the center between each pair of towers is the fulcrum of communication and supply, with panorama elevators and foyers for access or breaks that are open to the outside.
The six-story round building in the form of a truncated cone has an external diameter of 49 meters on the ground floor and 57 meters on the sixth floor. The ring-shaped floor area of the office floors is spaned without supports and is 12.6 meters deep; like the main building, it can be used for a large or group room, for based on a central aisle with cellular offices on either side, or for multipurpose offices. The height of each floor is 3.56 meters. The entrance, stairwell, and elevator tower form an axis of communication directed toward the entrance of the main building.
Following the gradient of the terrain, the naturally ventilated underground garage on the first underground level is directly linked to Dingolfinger Strasse. The fitness center on the second underground level is reached from the Mittlerer Ring, which is even lower, by a separate entrance ramp; its central multipurpose room, 20 meters in diameter, lies under the large glass dome of the interior courtyard. The courtyard is planted with bamboo hedges, and water pouring over large, solid basalt blocks provides for natural cooling on hot days. Flowing water supplies a pleasant ambient sound in the courtyard, which is also shielded from street noise. The exterior facade is double glazed; the rear-ventilated outer secondary facade permits a natural ventilation of the offices by means of the inner primary facade, while blocking noise from the middle ring. The facade of the interior courtyard is single-glazed and recedes floor by floor, which opens up the view up into the sky.
The round building, a striking entrance of the Telekom Center Munich on the Mittlerer Ring, has a capacity for 600 workstations; it can be used as a self-standing office unit.
Within the axis of vision of the two approach roads that expand to form a square where they intersect, lies the entrance building at the center of the site.A glass hall with a monopitch roof adjoins it at the back. This hall is used as the company restaurant, but also for special events like conferences, congresses, and concerts. It is linked to all the office towers by a connecting passageway. Attached to one side of the restaurant is a terrace courtyard that is shielded from the noise of passing trains.From the reception an open stairwell leads to the large junctio passage way on the second floor.
The facade of the office towers is double glazed. With an axis of 137.5 cm in length and a clearance height of 280 cm, the inner, primary facade is a perforated facade with 97 by 220 cm thermopane-glazed tilt-and-turn windows inside a solid exterior wall of prefab ferroconcrete parts. The exterior, rear-ventilated secondary facade shields against noise and weather. The low window breasts are clad with corrugated aluminum. Generally speaking, the facade system allows for natural light and ventilation of all workstations. Compliance with the maximum permissible temperature at work places, 26 ° Celsius, is achieved by natural means, without the use of air conditioning, by cooling out the building at night, by taking advantage of thermal masses, and by sunshades located in the interstices between the facades, which can be adjusted according to the weather.
The 54-meter-long connecting bridge on the fifteenth floor, consisting of two steel trussed beams and ferroconcrete covers, what assembled completely on the ground — including glazing, roof cladding, and facing on the underside — and then raised to its final position. This 440-ton bridge was raised at a speed of six meters per hour over a period of eight hours using the deflected-strand process: Crossbeams with hydraulic lifters were mounted above the two bridge supports on the fifteenth floor; these were used to raise continuously the steel cables that held the ends of the bridge. The three remaining bridges, each with a span of 20 meters, were also assembled on the ground and raised to the fifteenth floor.
设计单位：kiessler architekten GmbH
项目合作伙伴：Stefan Blume、Georgios Rebouskos
设计团队完整名单：Vera Ilic、 Gianfranca Maio、Thomas Mühlbauer, Uwe Schneider、Moritz Segers、 Manes Schultz、Tobias Trinkl
业主：DeTe Immobilien, Kadima Grundstücksgesellschaft & Co.KG
结构：Sailer Stepan und Partner
景观：Valentien & Valentien Landschaftsarchitekten
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