Seismic Isolation Retrofit of
The Kanagawa Prefecture Government New Building
神奈川県庁新庁舎 免震改修＋増築
April 28th, 2018
本計画の目的は、災害時における事業継続性の強化である。東日本大震災を機に耐震・津波対策として、既存3庁舎共に地下の電気関係室を地上に再配置した。新庁舎は地上にエネルギーセンター棟を増築した後、地下1階柱頭免震化を行い駐車場に改変した。併せて地上階の既存不適格分改修及び設備更新を行った。これらを居ながら工事で業務を継続し引越しを繰返す複雑な計画となった。
エネルギーセンター棟は電気関係室を3，4階に新設、下部に津波の避難場所となるぺデストリアンデッキを設置、本庁舎キングの塔を正面に望む新たな都市景観が生まれた。
このたび、仮に１棟が被災しても他庁舎からの電源がバックアップ可能となった。横浜の歴史的景観の継承と同時に、非常時の冗長性を備える庁舎に改変することも本計画の特徴である。
The purpose of this project is to enhance disaster preparedness in the modern architectural heritage, The Kanagawa Prefecture Government New Building, completed in 1966. In response to the Great East Japan Earthquake, the electric room, which originally had been located in the basement, was relocated above the ground level as a measure against earthquakes and tsunamis. The new building is now seismically isolated, and its ground floor has been renovated and aesthetically upgraded.
In the Energy Center building, electrical-related rooms were newly built on the 3rd and 4th floors, and a pedestrian deck was installed at the bottom of the building to serve as a tsunami evacuation area, creating a new urban landscape.
Even if one of the buildings were to be damaged, power supply would be backed up from other government buildings.
The new government building is now well equipped to provide redundancy in case of emergency, while at the same time inheriting the historical landscape of Yokohama.
photograph: 小川重雄 Shigeo Ogawa
information:
竣工年：2018年
所在地：神奈川県
用途：県庁舎
建築面積：4,257 m²
延床面積：42,081 m²
階数：地下1階 地上13階 塔屋2階
構造：SRC造一部S造（エネルギーセンター棟：S造一部SRC造）
collaboration:
構造計画研究所
press:
新建築 2018/04
information:
year: 2018
location: Kanagawa, Japan
building type: Prefectural office building
BA: 4,257 m²
GFA: 42,081 m²
floor: B1F/13F/Penthouse2F
structure: SRC+S (Energy Center Building: S+SRC)
collaboration:
KOZO KEIKAKU ENGINEERING Inc.
press:
SHINKENCHIKU 2018/04
Renewal of the Kanagawa Prefecture Government Main Building |
Kanagawa New Prefectural Offices |
New Administration Office of Kanagawa Prefecture |