A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRIDGE GIRDER SUPPORT STRUCTURE
PROBLEM TO BE SOLVED: To provide a bridge girder support structure capable of preventing a bridge footing from collapsing even when a strong uplifting force is generated on a bearing body integrated with a bridge girder due to earthquake occurrence by preventing the uplifting force from being transmitted through an anchor member to the bridge footing.SOLUTION: A bridge girder support structure comprises: an anchor bolt 24, which has a base end 24A buried in a bridge footing 21 and an upper end 24B protruding from the bridge footing 21 of a bridge in which a bridge girder is supported through a bearing body 22 on the bridge footing 21; an open hole 25, which is formed on the bearing body 22 installed on the bridge footing 21 so that the upper end 24B of the anchor bolt 24 penetrates the open hole; and a sliding jig 30, which is disposed between the open hole 25 of the bearing body 22 and the anchor bolt 24 and reduces friction force along an axial direction (x) of the anchor bolt 24.SELECTED DRAWING: Figure 1
【課題】この発明は、地震発生時において、橋桁と一体となっている支承体に強い上揚力が発生した場合であっても、その上揚力がアンカー部材を経由して橋脚に伝達されることを防止して、該橋脚が破壊されることを未然に防止することが可能な橋桁支持構造を提供する。【解決手段】橋脚２１上に支承体２２を介して橋桁が支持された橋梁において、橋脚２１内に基端部２４Ａが埋め込まれかつ橋脚２１から突出するように上端部２４Ｂが設けられたアンカーボルト２４と、橋脚２１上に設置された支承体２２に設けられてアンカーボルト２４の上端部２４Ｂが挿通される貫通孔２５と、支承体２２の貫通孔２５とアンカーボルト２４との間に配置されてこれらの間にて該アンカーボルト２４の軸方向（イ）に沿う摩擦力を低減する摺動治具３０と、を有することを特徴とする。【選択図】図１
BRIDGE GIRDER SUPPORT STRUCTURE
PROBLEM TO BE SOLVED: To provide a bridge girder support structure capable of preventing a bridge footing from collapsing even when a strong uplifting force is generated on a bearing body integrated with a bridge girder due to earthquake occurrence by preventing the uplifting force from being transmitted through an anchor member to the bridge footing.SOLUTION: A bridge girder support structure comprises: an anchor bolt 24, which has a base end 24A buried in a bridge footing 21 and an upper end 24B protruding from the bridge footing 21 of a bridge in which a bridge girder is supported through a bearing body 22 on the bridge footing 21; an open hole 25, which is formed on the bearing body 22 installed on the bridge footing 21 so that the upper end 24B of the anchor bolt 24 penetrates the open hole; and a sliding jig 30, which is disposed between the open hole 25 of the bearing body 22 and the anchor bolt 24 and reduces friction force along an axial direction (x) of the anchor bolt 24.SELECTED DRAWING: Figure 1
【課題】この発明は、地震発生時において、橋桁と一体となっている支承体に強い上揚力が発生した場合であっても、その上揚力がアンカー部材を経由して橋脚に伝達されることを防止して、該橋脚が破壊されることを未然に防止することが可能な橋桁支持構造を提供する。【解決手段】橋脚２１上に支承体２２を介して橋桁が支持された橋梁において、橋脚２１内に基端部２４Ａが埋め込まれかつ橋脚２１から突出するように上端部２４Ｂが設けられたアンカーボルト２４と、橋脚２１上に設置された支承体２２に設けられてアンカーボルト２４の上端部２４Ｂが挿通される貫通孔２５と、支承体２２の貫通孔２５とアンカーボルト２４との間に配置されてこれらの間にて該アンカーボルト２４の軸方向（イ）に沿う摩擦力を低減する摺動治具３０と、を有することを特徴とする。【選択図】図１
BRIDGE GIRDER SUPPORT STRUCTURE
橋桁支持構造
SAITO MASAMITSU (author) / IKEDA MANABU (author)
2017-09-28
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
TEMPORARY STRUCTURE FOR BRIDGE GIRDER REMOVAL AND BRIDGE GIRDER REMOVING DEVICE
| European Patent Office | 2024