DESIGNWORKS Vol.34

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Ｊリーグ・ガンバ大阪の新本拠地となる国際基準のサッカー専用競技場。募金団体が主となり、「みんなの寄付金でつくる日本初のスタジアム」として建設された。4万の席を覆う屋根には、たて・よこ・ななめ方向の免震架構を開発し、鉄骨量約40％の軽量化を図っている。運営者の維持管理を最小化するために、観客席の積層によって建物全体をコンパクトにし、仕上を極限までそぎ落とすことでメンテナンスフリーを追求。環境面では、0.5MWの太陽光発電やオールLEDのフィールド照明のほか、近傍の大型複合施設とのスマート受電など地域の省CO2にも配慮し、サッカースタジアムとしては国内初のCASBEE Sランクを達成した。曲線を排除したデザインを徹底することで、躯体の8割をPC化することに成功し、究極の省人化工法が可能となった。(浜谷 朋之)市立吹田サッカースタジアムSuita City Football StadiumA sustainable stadium持続可能なスタジアムを目指してClient: Stadium construction fund-raising organizationLocation: Suita-shi, OsakaMain Use: StadiumDesign and construction work: Takenaka Corporation·Architects: Shigehiko Ohira, Tomoyuki Hamaya, Hiromitsu Ohtani, Shouichi Senda and Kaori Saitou·Structual: Hisato Okude, Hirokazu Nozawa, Masahito Ohno, and Takashi Kihara·M&E: Ryousuke Hogami, Hiroyasu Satou, and Daisuke Hara·Site maneger: Tatsuo Nakano, Susumu MatsuoCM: Yasui Architects & Engineers, Inc.Site area: 90,065.33m2Building floor area: 24,695.51m2Total floor area: 63,908.71m2Construction: Reinforced concrete,precast concrete, and steelNumber of stories: 6 floors above groundand 1 penthouse floorConstruction term: December 2013 to September 2015建築主：スタジアム建設募金団体所在地：大阪府吹田市主要用途：観覧場　設計施工：竹中工務店・設計：大平滋彦・浜谷朋之・大谷博三　　　　千田尚一・齋藤華織・構造：奥出久人・野澤裕和・大野正人　　　　木原隆志・設備：布上亮介・佐藤弘康・原大輔・作業所長：中野達男・松尾享CM：安井建築設計事務所敷地面積：90,065.33㎡建築面積：24,695.51㎡延床面積：63,908.71㎡構造：RC造・PC造・S造階数：地上6階 塔屋1階工期：2013.12～2015.09This dedicated soccer stadium that has been built to international standards is the new home of the J.League Gamba Osaka team. A fundraising organization took the lead in financing “the first stadium in Japan to be built with contributions from the general public.” For the roof that covers the 40,000 spectator seats, a skeleton that is seismically isolated in vertical, horizontal and diagonal directions was developed, and the quantity of steel frame members was reduced by approximately 40%. To minimize the maintenance burden on the operators, the overall building size was made more compact by stacking the spectator seats, and the building finishing components was reduced as much as possible in order to make the facility maintenance-free. For environmental considerations, 0.5 MW photovoltaic power panels were provided and LEDs were used exclusively for the field lighting, and other measures such as smart power reception in combination with large adjacent complexes were introduced to reduce regional CO2 emissions. The stadium was the first soccer stadium in Japan to receive the highest (S) rank of the Comprehensive Assessment System for Building Environmental Efficiency (CASBEE). The use of a design that eliminates all curves made it possible to use precast concrete for 80% of the skeleton, enabling maximal labor-saving construction. (Tomoyuki Hamaya)フィールドとのコントラストを意識した硬質な外観02Works06