CONSTRUCTION METHOD OF PRECAST CONCRETE STRUCTURE AND ITS CONNECTION STRUCTURE

• Main Authors: KUWAHARA TAKUMA, WAKAMATSU HIROTOMO, TANAKA RYOICHI, AMINO TAKAHIKO, ONISHI MASAYUKI
• Format: Patent
• Language: English; Japanese
• Published: 09.09.2021
• Subjects: ASSEMBLY OF BRIDGES; BUILDING; CEILINGS; CONSTRUCTION OF BRIDGES; CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES; FIXED CONSTRUCTIONS; FLOORS; GENERAL BUILDING CONSTRUCTIONS; INSULATION OR OTHER PROTECTION OF BUILDINGS; OR VIADUCTS; ROOFS; WALLS, e.g. PARTITIONS

To provide a construction method of precast concrete structure which can construct more efficiently precast concrete structures by reducing work complexity.SOLUTION: Prior to the upper bar arrangement work in which opposing upper reinforcing bars 10 are connected to each other by upper connecting reinforcing bars 11, the lower bar arrangement work is performed, in which facing end parts 5 of each floor slab unit 4 are formed into a step shape having a lower end surface 6 projecting from an upper end surface 7 toward the opposite end surface 5 on the opposite side, a large number of reinforcing bar connecting parts 8 arranged at lateral intervals are provided on the lower end surface 6, and on the upper end surface 7, a large number of upper reinforcing bars 10 arranged at lateral intervals are projected to the vicinity of the lower end surface 6 on its own side, and the lower connecting reinforcing bar 9a are connected to each reinforcing bar connecting part 8 of each floor slab unit 4 arranged with a gap on the beam 2, making the lower connecting reinforcing bars 9a extending toward the opposite end 5 on the other side to overlap each other.SELECTED DRAWING: Figure 10 【課題】作業の煩雑さを軽減してプレキャストコンクリート構造物をより効率的に構築できるプレキャストコンクリート構造物の構築方法を提供する。【解決手段】各床版ユニット４の互いの対向端部５を、上側端面７よりも相手側の対向端部５に向かって突出した下側端面６を有するステップ状にして、下側端面６には横方向に間隔をあけて配列した多数の鉄筋接続部８を設け、上側端面７には横方向に間隔をあけて配列した多数本の上側鉄筋１０を自分側の下側端面６の近傍範囲まで突出させ、梁２の上にすき間をあけて配置した各床版ユニット４の各鉄筋接続部８に下側つなぎ鉄筋９ａを接続して、相手側の対向端部５に向かって延在させた下側つなぎ鉄筋９ａどうしをオーバーラップさせた状態にする下側配筋作業を、対向する上側鉄筋１０どうしを上側つなぎ鉄筋１１で連結した状態にする上側配筋作業に先行して行う。【選択図】図１０