A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
QUAKE ABSORBING STRUCTURE OF BRIDGE GIRDER
PROBLEM TO BE SOLVED: To provide a quake absorbing structure of a bridge girder that mitigates a burden for maintenance work after an earthquake.SOLUTION: When a bridge girder 20 is shaken on a support structure 10 by an earthquake, the shaking of the bridge girder 20 is suppressed by efficiently absorbing movement energy that shakes the bridge girder 20, as a cushioning material 30 interposed between a recess 11 of the support structure 10 and a protrusion 21 of the bridge girder 20 is deformed and a viscous fluid moves inside a bag body of the cushioning material 30. When the movement energy that shakes the bridge girder 20 is large and the movement energy of the bridge girder 20 cannot be absorbed only by the deformation of the cushioning material 30, the movement energy of the bridge girder 20 conveyed to the support structure 10 is minimized by having the bridge girder 20 slide upward along a slope surface 13. After the earthquake subsides, the bridge girder 20 resumes to a prescribed position as the protrusion 21 resumes to an original position inside the recess 11 along with restoration of the cushioning material 30.SELECTED DRAWING: Figure 1
【課題】地震後のメンテナンス作業を軽減することができる橋桁の免震構造を実現する。【解決手段】地震によって支持構造物１０上で橋桁２０が揺れた場合、支持構造物１０の凹部１１と橋桁２０の凸部２１の間に介装されている緩衝部材３０が変形し、緩衝部材３０の袋体内で粘性流体が移動することによって、橋桁２０が揺動する移動エネルギーを効率よく吸収し、その橋桁２０の揺れを抑えるようにした。また、橋桁２０が揺動する移動エネルギーが大きく、緩衝部材３０の変形だけでは橋桁２０の移動エネルギーを吸収しきれない場合には、橋桁２０を傾斜面１３に沿って迫り上がらせるようにして、支持構造物１０に伝わる橋桁２０の移動エネルギーを最小限にするようにした。そして、地震が治まった後に緩衝部材３０が復元することに伴い、凸部２１が凹部１１内の元の位置に戻ることによって、橋桁２０を所定の配置に復元させるようにした。【選択図】図１
QUAKE ABSORBING STRUCTURE OF BRIDGE GIRDER
PROBLEM TO BE SOLVED: To provide a quake absorbing structure of a bridge girder that mitigates a burden for maintenance work after an earthquake.SOLUTION: When a bridge girder 20 is shaken on a support structure 10 by an earthquake, the shaking of the bridge girder 20 is suppressed by efficiently absorbing movement energy that shakes the bridge girder 20, as a cushioning material 30 interposed between a recess 11 of the support structure 10 and a protrusion 21 of the bridge girder 20 is deformed and a viscous fluid moves inside a bag body of the cushioning material 30. When the movement energy that shakes the bridge girder 20 is large and the movement energy of the bridge girder 20 cannot be absorbed only by the deformation of the cushioning material 30, the movement energy of the bridge girder 20 conveyed to the support structure 10 is minimized by having the bridge girder 20 slide upward along a slope surface 13. After the earthquake subsides, the bridge girder 20 resumes to a prescribed position as the protrusion 21 resumes to an original position inside the recess 11 along with restoration of the cushioning material 30.SELECTED DRAWING: Figure 1
【課題】地震後のメンテナンス作業を軽減することができる橋桁の免震構造を実現する。【解決手段】地震によって支持構造物１０上で橋桁２０が揺れた場合、支持構造物１０の凹部１１と橋桁２０の凸部２１の間に介装されている緩衝部材３０が変形し、緩衝部材３０の袋体内で粘性流体が移動することによって、橋桁２０が揺動する移動エネルギーを効率よく吸収し、その橋桁２０の揺れを抑えるようにした。また、橋桁２０が揺動する移動エネルギーが大きく、緩衝部材３０の変形だけでは橋桁２０の移動エネルギーを吸収しきれない場合には、橋桁２０を傾斜面１３に沿って迫り上がらせるようにして、支持構造物１０に伝わる橋桁２０の移動エネルギーを最小限にするようにした。そして、地震が治まった後に緩衝部材３０が復元することに伴い、凸部２１が凹部１１内の元の位置に戻ることによって、橋桁２０を所定の配置に復元させるようにした。【選択図】図１
QUAKE ABSORBING STRUCTURE OF BRIDGE GIRDER
橋桁の免震構造
KOBAYASHI KAORU (author) / HIRABAYASHI MASAYA (author)
2016-12-01
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
QUAKE-ABSORBING STRUCTURE CONSTRUCTION METHOD AND QUAKE-ABSORBING STRUCTURE
| European Patent Office | 2024