A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
WIDENING PC FLOOR SLAB STRUCTURE, AND WIDENING METHOD FOR EXISTING PC FLOOR SLAB
PROBLEM TO BE SOLVED: To provide a widening PC floor slab structure that prevents a floor slab thickness from being increased and an RC structure part from being formed.SOLUTION: A widening PC floor slab structure 1 is for widening in a width direction an existing concrete floor slab part 10A at an existing main girder A that includes the existing concrete floor slab part 10A and a girder 11A for supporting the existing concrete floor slab part 10A. A precast rib 2 is connected to the girder 11A by tensioning a first cable 3, the precast rib projecting partly outward in the width direction than the existing concrete floor slab part 10A and being pierced through inside by the first cable 3 and a second cable 4, the cables being made of PC steel. The precast rib 2 is prestressed, and a PC plate 5 is mounted on a part of the precast rib, for forming an overhang floor slab part 6 by casting concrete in a space formed between the PC plate 5 and an edge of the existing concrete floor slab part 10A in the width direction. Then, tension is applied to the second cable 4 for prestressing a joint part 7 between the existing concrete floor slab part 10A and the overhang floor slab part 6.SELECTED DRAWING: Figure 1
【課題】床版厚が厚くならず、ＲＣ構造部も発生しない拡幅ＰＣ床版構造を提供する。【解決手段】既設コンクリート床版部１０Ａと、この既設コンクリート床版部１０Ａを支持する桁部１１Ａを含む既設主桁Ａにおける既設コンクリート床版部１０Ａを、幅方向に拡幅する拡幅ＰＣ床版構造１であって、一部が既設コンクリート床版部１０Ａよりも幅方向に突出し、かつ、内部をＰＣ鋼材である第１ケーブル３及び第２ケーブル４が貫通しているプレキャストリブ２を桁部１１Ａへ、第１ケーブル３を緊張させて接合し、プレキャストリブ２にプレストレスを導入し、その一部にＰＣ板５を載置し、ＰＣ板５と既設コンクリート床版部１０Ａの幅方向の先端とで形成される空間に場所打ちコンクリートで張出し床版部６を形成し、第２ケーブル４を緊張させて既設コンクリート床版部１０Ａと張出し床版部６との接合部７にプレストレスを導入する。【選択図】図１
WIDENING PC FLOOR SLAB STRUCTURE, AND WIDENING METHOD FOR EXISTING PC FLOOR SLAB
PROBLEM TO BE SOLVED: To provide a widening PC floor slab structure that prevents a floor slab thickness from being increased and an RC structure part from being formed.SOLUTION: A widening PC floor slab structure 1 is for widening in a width direction an existing concrete floor slab part 10A at an existing main girder A that includes the existing concrete floor slab part 10A and a girder 11A for supporting the existing concrete floor slab part 10A. A precast rib 2 is connected to the girder 11A by tensioning a first cable 3, the precast rib projecting partly outward in the width direction than the existing concrete floor slab part 10A and being pierced through inside by the first cable 3 and a second cable 4, the cables being made of PC steel. The precast rib 2 is prestressed, and a PC plate 5 is mounted on a part of the precast rib, for forming an overhang floor slab part 6 by casting concrete in a space formed between the PC plate 5 and an edge of the existing concrete floor slab part 10A in the width direction. Then, tension is applied to the second cable 4 for prestressing a joint part 7 between the existing concrete floor slab part 10A and the overhang floor slab part 6.SELECTED DRAWING: Figure 1
【課題】床版厚が厚くならず、ＲＣ構造部も発生しない拡幅ＰＣ床版構造を提供する。【解決手段】既設コンクリート床版部１０Ａと、この既設コンクリート床版部１０Ａを支持する桁部１１Ａを含む既設主桁Ａにおける既設コンクリート床版部１０Ａを、幅方向に拡幅する拡幅ＰＣ床版構造１であって、一部が既設コンクリート床版部１０Ａよりも幅方向に突出し、かつ、内部をＰＣ鋼材である第１ケーブル３及び第２ケーブル４が貫通しているプレキャストリブ２を桁部１１Ａへ、第１ケーブル３を緊張させて接合し、プレキャストリブ２にプレストレスを導入し、その一部にＰＣ板５を載置し、ＰＣ板５と既設コンクリート床版部１０Ａの幅方向の先端とで形成される空間に場所打ちコンクリートで張出し床版部６を形成し、第２ケーブル４を緊張させて既設コンクリート床版部１０Ａと張出し床版部６との接合部７にプレストレスを導入する。【選択図】図１
WIDENING PC FLOOR SLAB STRUCTURE, AND WIDENING METHOD FOR EXISTING PC FLOOR SLAB
拡幅ＰＣ床版構造及び、既設ＰＣ床版の拡幅工法
MASUI TAKASHI (author) / YAMAUCHI TAKAHIRO (author) / MORITA AKIO (author) / SATO YUJI (author) / NISHINAGA TAKUJI (author) / TOKUMITSU SUGURU (author) / YAGI YOSUKE (author) / YAMADA MASAHIKO (author) / YAMAGUCHI MITSUTOSHI (author)
2016-04-25
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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