A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRIDGE GIRDER FALL PREVENTION DEVICE
PROBLEM TO BE SOLVED: To provide a bridge girder fall prevention device capable of highly efficiently absorbing large impact force particularly applied to a substantially central part of a cushioning chain and simplifying a manufacturing process.SOLUTION: A bridge girder fall prevention device is provided for preventing a fall of a bridge girder 2 supported by a support structure 3 and comprises: a first connection member 12 constituted by connecting a plurality of rings 13 and having one end installed in the support structure 3, and a second connection member 22 constituted by connecting a plurality of rings 23 and having one end installed on the bridge girder 2; and a cushioning unit 30 provided between the other end of the first connection member 12 and the other end of the second connection member 22. The cushioning unit 30 is constituted for integrally freely cushioning impact force respectively transmitted from the first connection member 12 and the second connection member 22 connected to both ends thereof.
【課題】特に緩衝用チェーンの略中央部に負荷される大きな衝撃力を高効率に吸収することができ、製造工程を簡素化する。【解決手段】支持構造体３により支持された橋桁２の落下を防止するために、それぞれ複数のリング１３、２３を連結して構成され、一端が支持構造体３に取り付けられた第１連結部材１２及び一端が橋桁２に取り付けられた第２連結部材２２と、第１連結部材１２の他端と第２連結部材２２の他端との間に設けられた緩衝ユニット３０とを備え、緩衝ユニット３０は、その両端に連結された第１連結部材１２及び上記第２連結部材２２からそれぞれ伝達されてくる衝撃力を一体で緩衝自在に構成されている。【選択図】図２
BRIDGE GIRDER FALL PREVENTION DEVICE
PROBLEM TO BE SOLVED: To provide a bridge girder fall prevention device capable of highly efficiently absorbing large impact force particularly applied to a substantially central part of a cushioning chain and simplifying a manufacturing process.SOLUTION: A bridge girder fall prevention device is provided for preventing a fall of a bridge girder 2 supported by a support structure 3 and comprises: a first connection member 12 constituted by connecting a plurality of rings 13 and having one end installed in the support structure 3, and a second connection member 22 constituted by connecting a plurality of rings 23 and having one end installed on the bridge girder 2; and a cushioning unit 30 provided between the other end of the first connection member 12 and the other end of the second connection member 22. The cushioning unit 30 is constituted for integrally freely cushioning impact force respectively transmitted from the first connection member 12 and the second connection member 22 connected to both ends thereof.
【課題】特に緩衝用チェーンの略中央部に負荷される大きな衝撃力を高効率に吸収することができ、製造工程を簡素化する。【解決手段】支持構造体３により支持された橋桁２の落下を防止するために、それぞれ複数のリング１３、２３を連結して構成され、一端が支持構造体３に取り付けられた第１連結部材１２及び一端が橋桁２に取り付けられた第２連結部材２２と、第１連結部材１２の他端と第２連結部材２２の他端との間に設けられた緩衝ユニット３０とを備え、緩衝ユニット３０は、その両端に連結された第１連結部材１２及び上記第２連結部材２２からそれぞれ伝達されてくる衝撃力を一体で緩衝自在に構成されている。【選択図】図２
BRIDGE GIRDER FALL PREVENTION DEVICE
橋桁落下防止装置
TAKEMURA MANABU (author) / KAGE HIROMICHI (author) / UKISHIMA TORU (author)
2015-10-05
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
up-lift control and Anti-fall prevention steel box girder bridge
| European Patent Office | 2020
up-lift control and Anti-fall prevention steel box girder bridge
European Patent Office | 2021
BRIDGE FALL PREVENTION METHOD FOR EXISTING BRIDGE GIRDER EXPOSED TO SEISMIC AND TSUNAMI FORCE
| European Patent Office | 2016