A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRIDGE GIRDER
PROBLEM TO BE SOLVED: To provide a bridge girder of a box-shaped cross-sectional shape in which a span can be elongated while preventing degradation of construction efficiency and increase of cost, even while using a web plate made of PCa concrete for webs, and weight can be reduced.SOLUTION: A bridge girder 1 includes an upper floor panel 11, a lower floor panel 12, and multiple webs 13 for connecting the upper floor panel 11 and the lower floor panel 12, and has a box-shaped cross-sectional shape. Multiple web plates 14 made of PCa concrete with a bridge axial direction length gradually increased from a middle part in the height direction toward an upper side and a lower side in a side view are arranged in the bridge axial direction to form the webs 13, and the height of end web plates 14B disposed in the vicinity of both ends in the bridge axial direction is made larger than the height of general web plates 14A disposed in the central part in the bridge axial direction.SELECTED DRAWING: Figure 1
【課題】ウェブにＰＣａコンクリート製のウェブ板を用いながらも、施工効率の悪化や費用の増加を抑制しつつスパンを長大化することができ、且つ軽量化が可能な箱状断面形状の橋桁を提供する。【解決手段】上床版１１と、下床版１２と、上床版１１及び下床版１２を連結する複数のウェブ１３とを備え、箱状断面形状を有する橋桁１において、側面視において高さ方向の中位から上辺及び下辺に向けて橋軸方向長さが徐々に増大するＰＣａコンクリート製の複数のウェブ板１４を橋軸方向に配列してウェブ１３を形成し、橋軸方向の両端部近傍に配置される端部ウェブ板１４Ｂの高さを、橋軸方向の中央部に配置される一般部ウェブ板１４Ａの高さよりも大きくする。【選択図】図１
BRIDGE GIRDER
PROBLEM TO BE SOLVED: To provide a bridge girder of a box-shaped cross-sectional shape in which a span can be elongated while preventing degradation of construction efficiency and increase of cost, even while using a web plate made of PCa concrete for webs, and weight can be reduced.SOLUTION: A bridge girder 1 includes an upper floor panel 11, a lower floor panel 12, and multiple webs 13 for connecting the upper floor panel 11 and the lower floor panel 12, and has a box-shaped cross-sectional shape. Multiple web plates 14 made of PCa concrete with a bridge axial direction length gradually increased from a middle part in the height direction toward an upper side and a lower side in a side view are arranged in the bridge axial direction to form the webs 13, and the height of end web plates 14B disposed in the vicinity of both ends in the bridge axial direction is made larger than the height of general web plates 14A disposed in the central part in the bridge axial direction.SELECTED DRAWING: Figure 1
【課題】ウェブにＰＣａコンクリート製のウェブ板を用いながらも、施工効率の悪化や費用の増加を抑制しつつスパンを長大化することができ、且つ軽量化が可能な箱状断面形状の橋桁を提供する。【解決手段】上床版１１と、下床版１２と、上床版１１及び下床版１２を連結する複数のウェブ１３とを備え、箱状断面形状を有する橋桁１において、側面視において高さ方向の中位から上辺及び下辺に向けて橋軸方向長さが徐々に増大するＰＣａコンクリート製の複数のウェブ板１４を橋軸方向に配列してウェブ１３を形成し、橋軸方向の両端部近傍に配置される端部ウェブ板１４Ｂの高さを、橋軸方向の中央部に配置される一般部ウェブ板１４Ａの高さよりも大きくする。【選択図】図１
BRIDGE GIRDER
橋桁
KASUGA AKIO (author) / NAKATSUMI KENICHI (author) / OSHIRO SOSHI (author) / MATSUI TAKAYUKI (author)
2017-01-12
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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