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 prevent 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 bolt to the bridge footing.SOLUTION: A bridge girder support structure comprises: an anchor bolt 24 whose upper end 24B protrudes upward from a bridge footing 21; an open hole 25, which is formed on a bearing body 22 installed on the bridge footing 21 so that the upper end 24B of the anchor bolt 24 penetrates the open hole; a nut 31, which is screwed with the upper end 24B of the anchor bolt 24 penetrated the open hole 25 of the bearing body 22; and a resistance member 30, which is disposed between an opening edge part 25A of the open hole 25 of the bearing body 22 and the nut 31 and transmits a fastening power of the nut 31 to the bearing body 22.SELECTED DRAWING: Figure 1
【課題】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ボルトを経由して橋脚に伝達されることを防止して、該橋脚の破壊を防止する。【解決手段】橋脚２１から上方に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上に設置される支承体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、該支承体２２の貫通孔２５を貫通したアンカーボルト２４の上端部２４Ｂに螺合されるナット３１と、支承体２２の貫通孔２５の開口縁部２５Ａとナット３１の間に配置されて該ナット３１の締結力を支承体２２に伝達する抵抗部材３０とを有する。【選択図】図１
BRIDGE GIRDER SUPPORT STRUCTURE
PROBLEM TO BE SOLVED: To prevent 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 bolt to the bridge footing.SOLUTION: A bridge girder support structure comprises: an anchor bolt 24 whose upper end 24B protrudes upward from a bridge footing 21; an open hole 25, which is formed on a bearing body 22 installed on the bridge footing 21 so that the upper end 24B of the anchor bolt 24 penetrates the open hole; a nut 31, which is screwed with the upper end 24B of the anchor bolt 24 penetrated the open hole 25 of the bearing body 22; and a resistance member 30, which is disposed between an opening edge part 25A of the open hole 25 of the bearing body 22 and the nut 31 and transmits a fastening power of the nut 31 to the bearing body 22.SELECTED DRAWING: Figure 1
【課題】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ボルトを経由して橋脚に伝達されることを防止して、該橋脚の破壊を防止する。【解決手段】橋脚２１から上方に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上に設置される支承体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、該支承体２２の貫通孔２５を貫通したアンカーボルト２４の上端部２４Ｂに螺合されるナット３１と、支承体２２の貫通孔２５の開口縁部２５Ａとナット３１の間に配置されて該ナット３１の締結力を支承体２２に伝達する抵抗部材３０とを有する。【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