DESIGNWORKS Vol.16

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N5RC在来工法Conventional reinforced concrete construction室外機置場Outdoor equipment depot合成床板・S梁Composite floorboards / Steel beams躯体PCPrestressed concrete frame内嵌式AWEmbedded AW1234567限られた建築制限線の中で出来るだけ広く有効な基準階床面積を確保するために、花崗岩の仕上と躯体PCを一体成型し、薄さ500mmのスキンウォールを開発した。地震時に発生する躯体と花崗岩のひずみを吸収するため、その間に弾性剤を塗布し、花崗岩と躯体をつなぐ金物(シアコネクタ)の端部にも隙間を設け弾性を持たせている。信頼性や実性能については、当社技術研究所にて行った各要素試験と実大性能試験によって確認している。柱型がなく隅々まで使える執務空間は、自由なワークプレイスのレイアウトを可能とし、居住性を大幅に向上させている。(中村 圭祐)SECTION S=1:1200花崗岩打ち込みPCによる外壁 25モノコックなスキンウォールMonocoque skin wallLOWER TYPICAL FLOOR PLAN基準階構成図1. エントランス Entrance2. 駐車場 Parking3. 電気室 Electric room4. 発電機室 Dynamo room5. 事務室 Office6. 食堂 Cafeteria7. 展望テラス View terraceA new skin wall with a thickness of only 500 mm, consisting of a cast prestressed concrete frame and granite finish, was developed for this building in order to extend the standard floor area as far as possible within the building restriction line. An elastomeric coating was provided between the concrete and granite in order to absorb the cracks produced in the frame and granite finish in the event of an earthquake. Elasticity was also provided to the skin wall through gaps placed at the ends of the shear connectors connecting the granite and the frame. Reliability and actual performance were confirmed through component tests and actual size model performance tests conducted at the Takenaka Research & Development Institute. The result is an interior without protruding columns in which every nook and cranny can be used, one that provides complete freedom in configuring the workplace layout and greatly increases the habitability of the office. (Keisuke Nakamura)28Works