A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
BRIDGE FALL PREVENTION DEVICE OF TRUSS BRIDGE
PROBLEM TO BE SOLVED: To provide a bridge fall prevention device capable of preventing a bridge fall of a truss bridge, even when a girder member in the central vicinity of an upper structure of the truss bridge is damaged.SOLUTION: A bridge fall prevention device of a truss bridge having an upper structure 1 constituted by repeating a structure of connecting both ends of a columnar girder member to another girder member in a triangle shape and a pair of lower structures 3 for supporting both ends of the upper structure, has respectively at least one cable 5 on both sides in a breadth direction of the upper structure, and has guide members 21B, 21C, 21D and 21E for slidably inserting the cable into a side surface of a plurality of girder members. The upper structure has end part vertical members 11A and 11F on both ends, and the end part vertical members have fixation members 8A and 8B in the upper end vicinity. The cable is inserted into the guide members, and both ends are fixed to the respective fixation members. The cable is in a loosened state in normal vibration time generated by the movement of a live load, and prevents a collapse of the upper structure by tensioning when the upper structure is deformed since the girder member is damaged.SELECTED DRAWING: Figure 1
【課題】トラス橋の上部構造の中央付近の桁部材が損傷した場合でも、トラス橋の落橋を防止できる落橋防止装置を提供する。【解決手段】柱状の桁部材の両端を他の桁部材と三角形に繋いだ構造を繰り返して構成された上部構造１と、上部構造の両端を支える一対の下部構造３を有するトラス橋の落橋防止装置において、上部構造の幅員方向の両サイドに各々少なくとも１本のケーブル５を有すること、複数の桁部材の側面に、ケーブルを摺動可能に挿通するガイド部材２１Ｂ、２１Ｃ、２１Ｄ、２１Ｅを有すること、上部構造は両端に端部鉛直部材１１Ａ、１１Ｆを有し、端部鉛直部材は上端付近に定着部材８Ａ、８Ｂを有すること、ケーブルはガイド部材に挿通され、両端は定着部材の各々に固定されていること、ケーブルは、活荷重の移動により生じる通常振動時には、弛んだ状態にあり、桁部材が破損して上部構造が変形した時に、緊張して上部構造の崩落を防止する。【選択図】図１
BRIDGE FALL PREVENTION DEVICE OF TRUSS BRIDGE
PROBLEM TO BE SOLVED: To provide a bridge fall prevention device capable of preventing a bridge fall of a truss bridge, even when a girder member in the central vicinity of an upper structure of the truss bridge is damaged.SOLUTION: A bridge fall prevention device of a truss bridge having an upper structure 1 constituted by repeating a structure of connecting both ends of a columnar girder member to another girder member in a triangle shape and a pair of lower structures 3 for supporting both ends of the upper structure, has respectively at least one cable 5 on both sides in a breadth direction of the upper structure, and has guide members 21B, 21C, 21D and 21E for slidably inserting the cable into a side surface of a plurality of girder members. The upper structure has end part vertical members 11A and 11F on both ends, and the end part vertical members have fixation members 8A and 8B in the upper end vicinity. The cable is inserted into the guide members, and both ends are fixed to the respective fixation members. The cable is in a loosened state in normal vibration time generated by the movement of a live load, and prevents a collapse of the upper structure by tensioning when the upper structure is deformed since the girder member is damaged.SELECTED DRAWING: Figure 1
【課題】トラス橋の上部構造の中央付近の桁部材が損傷した場合でも、トラス橋の落橋を防止できる落橋防止装置を提供する。【解決手段】柱状の桁部材の両端を他の桁部材と三角形に繋いだ構造を繰り返して構成された上部構造１と、上部構造の両端を支える一対の下部構造３を有するトラス橋の落橋防止装置において、上部構造の幅員方向の両サイドに各々少なくとも１本のケーブル５を有すること、複数の桁部材の側面に、ケーブルを摺動可能に挿通するガイド部材２１Ｂ、２１Ｃ、２１Ｄ、２１Ｅを有すること、上部構造は両端に端部鉛直部材１１Ａ、１１Ｆを有し、端部鉛直部材は上端付近に定着部材８Ａ、８Ｂを有すること、ケーブルはガイド部材に挿通され、両端は定着部材の各々に固定されていること、ケーブルは、活荷重の移動により生じる通常振動時には、弛んだ状態にあり、桁部材が破損して上部構造が変形した時に、緊張して上部構造の崩落を防止する。【選択図】図１
BRIDGE FALL PREVENTION DEVICE OF TRUSS BRIDGE
トラス橋の落橋防止装置
GOTO YOSHIAKI (author) / YAMADA TADANOBU (author) / O KEIUN (author)
2017-10-19
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken