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Act City Hamamatsu
Japan, Hamamatsu
Type: Philharmonics, Chopin Events Venues,
ACT City Hamamatsu, an ambitious project conceived as a model urban development for the 21st century where music and culture can flourish side by side with industry and technology, opened last October in Hamamatsu, 250 kilometers southwest of Tokyo. Jointly developed by local government authorities and private investors, the 4.3-hectare complex includes a high-rise office and hotel tower, a five-story civic center with two state-of-the-art concert/convention halls, an exhibition/event space and a musical instrument museum.
The centerpiece of ACT City is ACT Tower, a 45-story office building and luxury hotel developed by the city of Hamamatsu, The Dai-Ichi Mutual Life Insurance Co. and Mitsubishi Estate Co., Ltd. The 212m-high steel frame and steel frame-reinforced concrete building provides 150,978m2 of floor space as well as the latest in intelligent building systems and amenities. A 324-room world-class convention hotel, the Okura ACT City Hotel Hamamatsu, occupies part of the building between the first and fifth floors as well as floors 29 through 44. Office space, equipped with a card-type security system and energy efficient air conditioning, extends from the ninth through the 27th floors.
The elliptically shaped tower was specially designed to minimize wind resistance. A supertruss was utilized for constructing the set-back upper portion of the tower, whose pillars are positioned differently from those of the lower portion. The structure's complex form posed considerable construction challenges, especially in regard to steel framing work and installation of curved facing materials. In addition to heading up the joint venture responsible for construction, Kajima collaborated with Nihon Sekkei Inc., Mitsubishi Estate, Shimizu and Takenaka on the design.
Adjacent to ACT Tower stands the civic center, designed by Nihon Sekkei, which houses 13 conference rooms and two large halls. The center's main hall, which seats 2,336, resembles an 18th century opera house, with side balconies on the third and fourth floors and Japan's first four-faced stage. Adjustable desks built into the seats on the main level and booths for simultaneous translation allow the hall to be used for international conferences and other presentations. A second, more intimate hall seating 1,030 provides ideal acoustics for its impressive French-made pipe organ. The hall's innovative design features three soundproof rooms located in the rear of the auditorium that allow parents with small children to enjoy concerts without disturbing other audience members.
Situated at the easternmost end of ACT City Hamamatsu is a large-scale, multiuse exhibition/event space. Boasting an obstacle-free area of 3,500m2, which can be partitioned into three distinct areas as necessary, the three-story-high facility is appropriate for a wide variety of functions. A regional heating and cooling supply plant providing heating and air conditioning to the entire complex occupies a portion of the four-story underground space beneath the exhibition area. Excavations for the space extended to a depth of 22.5m and were complicated by the site's high water table.
ACT City's other major facility is Japan's first municipal Musical Instrument Museum. Designed by Nihon Sekkei and constructed by a Kajima-led joint venture, it will have 6,000 musical instruments from around the world on display. The museum is scheduled to open in April.
Address:
111-2 Itayamachi
Shizuoka, 430-7733 JP
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