Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
BRIDGE FALL PREVENTION STRUCTURE
PROBLEM TO BE SOLVED: To provide a bridge fall prevention structure for preventing a fall of a bridge girder, and capable of reducing maintenance work after an earthquake.SOLUTION: When a bridge girder 20 forces up along an inclined plane 31 of a bridge girder restoration member 30 by slidably moving in the crossing direction with its extension direction by an earthquake, restoration force for returning the positional relationship between the bridge girder 20 and a support structure 10 to an original state, is generated by pulling down its bridge girder 20 along the inclined plane 31 so as not to excessively slidably move the bridge girder 20, and prevents a bridge fall from above the support structure 10. After settling the earthquake, the bridge girder 20 forced up along the inclined plane is restored to predetermined arrangement by sliding down along the inclined plane by its restoring force. That is, since this bridge fall prevention structure 100 can restore the bridge girder 20 to the predetermined arrangement on the support structure 10, restoration work such as returning the dislocated bridge girder 20 to a predetermined position is obviated, so that maintenance work after the earthquake can be reduced.SELECTED DRAWING: Figure 2
【課題】橋桁の落下を防止するとともに、地震後のメンテナンス作業を軽減することができる落橋防止構造を提供する。【解決手段】地震によって橋桁２０がその延在方向と交差する方向にスライド移動し、橋桁復元部材３０の傾斜面３１に沿って迫り上がると、その橋桁２０を傾斜面３１に沿って引き下ろして橋桁２０と支持構造物１０との位置関係を元に戻す復元力が生じ、橋桁２０がスライド移動し過ぎないようになっており、支持構造物１０上から落橋するのを防いでいる。また、地震が治まった後、傾斜面に沿って迫り上がった橋桁２０はその復元力によって傾斜面に沿って滑り下り所定の配置に復元する。つまり、この落橋防止構造１００であれば、地震が治まった後、橋桁２０を支持構造物１０上での所定の配置に復元させることができるので、ずれた橋桁２０を所定位置に戻すような復旧工事が不要になり、地震後のメンテナンス作業を軽減することができる。【選択図】図２
BRIDGE FALL PREVENTION STRUCTURE
PROBLEM TO BE SOLVED: To provide a bridge fall prevention structure for preventing a fall of a bridge girder, and capable of reducing maintenance work after an earthquake.SOLUTION: When a bridge girder 20 forces up along an inclined plane 31 of a bridge girder restoration member 30 by slidably moving in the crossing direction with its extension direction by an earthquake, restoration force for returning the positional relationship between the bridge girder 20 and a support structure 10 to an original state, is generated by pulling down its bridge girder 20 along the inclined plane 31 so as not to excessively slidably move the bridge girder 20, and prevents a bridge fall from above the support structure 10. After settling the earthquake, the bridge girder 20 forced up along the inclined plane is restored to predetermined arrangement by sliding down along the inclined plane by its restoring force. That is, since this bridge fall prevention structure 100 can restore the bridge girder 20 to the predetermined arrangement on the support structure 10, restoration work such as returning the dislocated bridge girder 20 to a predetermined position is obviated, so that maintenance work after the earthquake can be reduced.SELECTED DRAWING: Figure 2
【課題】橋桁の落下を防止するとともに、地震後のメンテナンス作業を軽減することができる落橋防止構造を提供する。【解決手段】地震によって橋桁２０がその延在方向と交差する方向にスライド移動し、橋桁復元部材３０の傾斜面３１に沿って迫り上がると、その橋桁２０を傾斜面３１に沿って引き下ろして橋桁２０と支持構造物１０との位置関係を元に戻す復元力が生じ、橋桁２０がスライド移動し過ぎないようになっており、支持構造物１０上から落橋するのを防いでいる。また、地震が治まった後、傾斜面に沿って迫り上がった橋桁２０はその復元力によって傾斜面に沿って滑り下り所定の配置に復元する。つまり、この落橋防止構造１００であれば、地震が治まった後、橋桁２０を支持構造物１０上での所定の配置に復元させることができるので、ずれた橋桁２０を所定位置に戻すような復旧工事が不要になり、地震後のメンテナンス作業を軽減することができる。【選択図】図２
BRIDGE FALL PREVENTION STRUCTURE
落橋防止構造
KOBAYASHI KAORU (Autor:in) / HIRABAYASHI MASAYA (Autor:in)
22.12.2016
Patent
Elektronische Ressource
Japanisch
IPC:
E01D
BRIDGES
,
Brücken
BRIDGE FALL PREVENTION STRUCTURE FOR MASONRY BRIDGE PIER
| Europäisches Patentamt | 2019