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A platform for research: civil engineering, architecture and urbanism
CONSTRUCTION JOINT MOVEMENT RESTRICTION DEVICE, AND BRIDGE PIER
PROBLEM TO BE SOLVED: To implement an earthquake countermeasure on a concrete bridge pier having a construction joint, without increasing a river blocking rate.SOLUTION: A construction joint movement restriction device 1 includes a recessed part 2 and a rod-like member 3. The recessed part 2 is formed on a side surface of a bridge pier P, across a construction joint J from above to below. The rod-like member 3 is housed inside the recessed part 2, across the construction joint J from above to below. A base end side of the rod-like member 3 is fixed in the recessed part 2 below the construction joint J. A tip end side of the rod-like member 3 is inside the recessed part 2 above the construction joint J, and is separated from an inner wall surface 21 of the recessed part 2. The configuration restricts movement of portions of the bridge pier P above and below the construction joint J within a certain range, at a time of an earthquake.SELECTED DRAWING: Figure 3
【課題】打継目を有するコンクリート製の橋脚に、河川阻害率を増やさずに地震対策を行う。【解決手段】打継目移動制限装置１は、凹部２と、棒状部材３とを備える。凹部２は、打継目Ｊの上下にわたって橋脚Ｐの側面に形成される。棒状部材３は、打継目Ｊの上下にわたって凹部２内に収容される。棒状部材３の基端側は、打継目Ｊより下側の凹部２内に固定される。棒状部材３の先端側は、打継目Ｊより上側の凹部２内にあって、その凹部２の内壁面２１から離間している。これにより、地震時において、橋脚Ｐの打継目Ｊより上側の下側に対する移動が一定範囲内に制限される。【選択図】図３
CONSTRUCTION JOINT MOVEMENT RESTRICTION DEVICE, AND BRIDGE PIER
PROBLEM TO BE SOLVED: To implement an earthquake countermeasure on a concrete bridge pier having a construction joint, without increasing a river blocking rate.SOLUTION: A construction joint movement restriction device 1 includes a recessed part 2 and a rod-like member 3. The recessed part 2 is formed on a side surface of a bridge pier P, across a construction joint J from above to below. The rod-like member 3 is housed inside the recessed part 2, across the construction joint J from above to below. A base end side of the rod-like member 3 is fixed in the recessed part 2 below the construction joint J. A tip end side of the rod-like member 3 is inside the recessed part 2 above the construction joint J, and is separated from an inner wall surface 21 of the recessed part 2. The configuration restricts movement of portions of the bridge pier P above and below the construction joint J within a certain range, at a time of an earthquake.SELECTED DRAWING: Figure 3
【課題】打継目を有するコンクリート製の橋脚に、河川阻害率を増やさずに地震対策を行う。【解決手段】打継目移動制限装置１は、凹部２と、棒状部材３とを備える。凹部２は、打継目Ｊの上下にわたって橋脚Ｐの側面に形成される。棒状部材３は、打継目Ｊの上下にわたって凹部２内に収容される。棒状部材３の基端側は、打継目Ｊより下側の凹部２内に固定される。棒状部材３の先端側は、打継目Ｊより上側の凹部２内にあって、その凹部２の内壁面２１から離間している。これにより、地震時において、橋脚Ｐの打継目Ｊより上側の下側に対する移動が一定範囲内に制限される。【選択図】図３
CONSTRUCTION JOINT MOVEMENT RESTRICTION DEVICE, AND BRIDGE PIER
打継目移動制限装置及び橋脚
ARAMAKI SATOSHI (author) / SAKAOKA KAZUHIRO (author) / DOI TATSUYA (author)
2018-03-08
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
PIER, PIER CONSTRUCTION METHOD, BRIDGE RECONSTRUCTION METHOD AND BRIDGE CONSTRUCTION METHOD
| European Patent Office | 2021