A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
VERTICAL MEMBER REPLACEMENT METHOD FOR STEEL TRUSS BRIDGE
To provide a safe and reliable vertical member replacement method for a steel truss bridge which does not cause a change in the structural system of an entire steel truss bridge before and after replacing vertical members.SOLUTION: In a vertical member replacement method for a steel truss bridge for replacing an existing vertical member 1 of a steel truss bridge B1, an axial force removal step is performed in which an upper chord 2 is jacked up and the compressive axial force acting on the existing vertical member 1 is removed by using an axial force removal device 10 that comprises a hydraulic jack 11 for lifting and jacking up the upper chord 2 connected to the existing vertical member 1 of the steel truss bridge B1, a temporary beam 12 for obtaining the reaction force of the hydraulic jack 11, and an upper chord lifting mechanism 13 combined with a steel material having an upper frame 15 and a lower frame 16 connected by a connecting steel member 17 inserted through a through hole h1 vertically penetrating a floor slab D1 of the steel truss bridge B1. Then, afterwards, the existing vertical member 1 is replaced with a newly installed vertical member 1'.SELECTED DRAWING: Figure 3
【課題】鉛直材取替前後において鋼トラス橋全体の構造系に変化が生じない安全で確実な鋼トラス橋の鉛直材取替方法を提供する。【解決手段】鋼トラス橋Ｂ１の既設の鉛直材１を取り替える鋼トラス橋の鉛直材取替方法において、鋼トラス橋Ｂ１の既設の鉛直材１と連結された上弦材２を持ち上げてジャッキアップするための油圧ジャッキ１１と、油圧ジャッキ１１の反力を得るための仮設梁１２と、鋼トラス橋Ｂ１の床版Ｄ１を上下に貫通する貫通孔ｈ１に挿通された連結鋼材１７で連結された上部架台１５と下部架台１６とを有する鋼材が組み合わされた上弦材持上機構１３と、を備えた軸力除去装置１０を用いて、上弦材２をジャッキアップし、既設の鉛直材１に作用する圧縮軸力を除去する軸力除去工程を行った後、既設の鉛直材１を新設の鉛直材１’に取り替える。【選択図】図３
VERTICAL MEMBER REPLACEMENT METHOD FOR STEEL TRUSS BRIDGE
To provide a safe and reliable vertical member replacement method for a steel truss bridge which does not cause a change in the structural system of an entire steel truss bridge before and after replacing vertical members.SOLUTION: In a vertical member replacement method for a steel truss bridge for replacing an existing vertical member 1 of a steel truss bridge B1, an axial force removal step is performed in which an upper chord 2 is jacked up and the compressive axial force acting on the existing vertical member 1 is removed by using an axial force removal device 10 that comprises a hydraulic jack 11 for lifting and jacking up the upper chord 2 connected to the existing vertical member 1 of the steel truss bridge B1, a temporary beam 12 for obtaining the reaction force of the hydraulic jack 11, and an upper chord lifting mechanism 13 combined with a steel material having an upper frame 15 and a lower frame 16 connected by a connecting steel member 17 inserted through a through hole h1 vertically penetrating a floor slab D1 of the steel truss bridge B1. Then, afterwards, the existing vertical member 1 is replaced with a newly installed vertical member 1'.SELECTED DRAWING: Figure 3
【課題】鉛直材取替前後において鋼トラス橋全体の構造系に変化が生じない安全で確実な鋼トラス橋の鉛直材取替方法を提供する。【解決手段】鋼トラス橋Ｂ１の既設の鉛直材１を取り替える鋼トラス橋の鉛直材取替方法において、鋼トラス橋Ｂ１の既設の鉛直材１と連結された上弦材２を持ち上げてジャッキアップするための油圧ジャッキ１１と、油圧ジャッキ１１の反力を得るための仮設梁１２と、鋼トラス橋Ｂ１の床版Ｄ１を上下に貫通する貫通孔ｈ１に挿通された連結鋼材１７で連結された上部架台１５と下部架台１６とを有する鋼材が組み合わされた上弦材持上機構１３と、を備えた軸力除去装置１０を用いて、上弦材２をジャッキアップし、既設の鉛直材１に作用する圧縮軸力を除去する軸力除去工程を行った後、既設の鉛直材１を新設の鉛直材１’に取り替える。【選択図】図３
VERTICAL MEMBER REPLACEMENT METHOD FOR STEEL TRUSS BRIDGE
鋼トラス橋の鉛直材取替方法
YASUNO KATSUHIKO (author) / MATOBA SHIGEMICHI (author) / KOGA YOSHIKI (author) / AMAKO DAISUKE (author) / KAWAMURA HIROMASA (author) / KAMIYAMA TSUTOMU (author) / SUZUKI TAKUYA (author)
2023-05-10
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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