Construction method of reinforced concrete underground outer wall
Abstract
Abstract Translated from Japanese (57)【要約】 【課題】 スラブコンクリートの強度発現前でも、ま た、地下外周が吹き抜けの場合でも、土圧による山留め 壁からの水平力を支えることができ、かつ工事作業性の よい鉄筋コンクリート地下外壁の施工方法を提供する。 【解決手段】 建築現場をとり囲む山留壁2の工事とと もに内部地盤の掘削工事を進め、外周壁および各階のス ラブ3の周辺部を除いて逆打ち工法によりコンクリート を打設し、最下階のマットスラブ打設後、1階のスラブ 3の周辺部と山留め壁2との隙間からコンクリートを流 し込んで最下階から1階スラブ3まで順に後打コンクリ ートを打設して上下の梁躯体にわたる地下外壁12を後 打コンクリート工事で構築する地下外壁の施工方法にお いて、半PCa梁4とし、これの上部に突出する梁鉄骨 5に反力をとった水平束材7により、各階のスラブ3の 周辺部と山留壁2との間に隙間を確保する。 (57) [Summary] [Problem] Reinforced concrete underground that can support horizontal force from a retaining wall due to earth pressure and has good workability even before the strength of slab concrete is developed, and even if the underground outer periphery is a stairwell Provide an external wall construction method. SOLUTION: The excavation work of the inner ground is promoted together with the construction of the mountain retaining wall 2 surrounding the building site, and concrete is poured by the reverse striking method except for the outer peripheral wall and the periphery of the slab 3 on each floor, and the lowermost floor is constructed. After casting the mat slab, concrete is poured from the gap between the peripheral portion of the slab 3 on the first floor and the retaining wall 2 and the post-cast concrete is poured from the lowest floor to the first slab 3 in order to cover the upper and lower beam frames. In the method of constructing an underground outer wall 12 to be constructed by post-casting concrete work, a semi-PCa beam 4 is used, and a horizontal bundle 7 which takes a reaction force on a steel beam 5 projecting above the half beam is used to form the slab 3 on each floor. A gap is secured between the peripheral portion and the retaining wall 2.
Inventors
- 👤 Toshiichi Shimokawabe
- 👤 敏一 下川辺
- 👤 Yuji Sato
- 👤 勇二 佐藤
- 👤 Shokichi Gokan
- 👤 章吉 後閑
- 👤 Koichiro Kurisu
- 👤 浩一郎 栗栖
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