A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRIDGE FALL PREVENTION DEVICE
To provide a bridge fall prevention device that can prevent a bridge structure from being damaged even when a seismic force exceeding assumptions acts thereon.SOLUTION: A bridge fall prevention device 1 comprises: a first fixing member 5 fixed to one of bridge girders B1; a second fixing member 6 fixed to the other of the bridge girders B1; a first wire rod 2 inserted through the first fixing member 5; a second wire rod 3 inserted through the second fixing member 6; and a connection member 4 for connecting the first wire 2 and the second wire 3. A yield point or proof stress of the connection member 4 is greater than a design seismic force, and an upper limit of the tensile strength is known. Additionally, a proof stress of a mounting part between the first fixing member 5 and the one of the bridge girders B1 and a proof stress of a mounting part between the second fixing member 6 and the other of bridge girders B1 are greater than the upper limit of the tensile strength of the connection member 4.SELECTED DRAWING: Figure 1
【課題】想定外の地震力が作用した場合であっても、橋梁構造物に損傷が生じることがない落橋防止装置を提案する。【解決手段】一方の橋桁Ｂ１に固定された第一固定部材５と、他方の橋桁Ｂ１に固定された第二固定部材６と、第一固定部材５に挿通された第一線材２と、第二固定部材６に挿通された第二線材３と、第一線材２と第二線材３とを連結する連結部材４とを備える落橋防止装置１である。連結部材４の降伏点又は耐力は、設計地震力以上であるとともに引張強さの上限値が既知である。また、第一固定部材５と一方の橋桁Ｂ１との取付部の耐力および第二固定部材６と他方の橋桁Ｂ１との取付部の耐力が、連結部材４の引張強さの上限値よりも大きい。【選択図】図１
BRIDGE FALL PREVENTION DEVICE
To provide a bridge fall prevention device that can prevent a bridge structure from being damaged even when a seismic force exceeding assumptions acts thereon.SOLUTION: A bridge fall prevention device 1 comprises: a first fixing member 5 fixed to one of bridge girders B1; a second fixing member 6 fixed to the other of the bridge girders B1; a first wire rod 2 inserted through the first fixing member 5; a second wire rod 3 inserted through the second fixing member 6; and a connection member 4 for connecting the first wire 2 and the second wire 3. A yield point or proof stress of the connection member 4 is greater than a design seismic force, and an upper limit of the tensile strength is known. Additionally, a proof stress of a mounting part between the first fixing member 5 and the one of the bridge girders B1 and a proof stress of a mounting part between the second fixing member 6 and the other of bridge girders B1 are greater than the upper limit of the tensile strength of the connection member 4.SELECTED DRAWING: Figure 1
【課題】想定外の地震力が作用した場合であっても、橋梁構造物に損傷が生じることがない落橋防止装置を提案する。【解決手段】一方の橋桁Ｂ１に固定された第一固定部材５と、他方の橋桁Ｂ１に固定された第二固定部材６と、第一固定部材５に挿通された第一線材２と、第二固定部材６に挿通された第二線材３と、第一線材２と第二線材３とを連結する連結部材４とを備える落橋防止装置１である。連結部材４の降伏点又は耐力は、設計地震力以上であるとともに引張強さの上限値が既知である。また、第一固定部材５と一方の橋桁Ｂ１との取付部の耐力および第二固定部材６と他方の橋桁Ｂ１との取付部の耐力が、連結部材４の引張強さの上限値よりも大きい。【選択図】図１
BRIDGE FALL PREVENTION DEVICE
落橋防止装置
NIINA YUTAKA (author) / AIDA YUICHI (author)
2020-03-26
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken