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DISPLACEMENT MEASURING INSTRUMENT OF STRUCTURE
To solve the problem in which, in a displacement gage where an intermediate part of a filament body stretched between immovable points is provided to a measuring target structure, when measuring a displacement from a prescribed part of the filament body, since a stretching distance of the filament body often reaches dozens of meters, the filament body is applied with adequate tension (e.g. suspending a weight) in consideration of continuing to oscillate the filament body with non-quantitative all the time due to meteorological condition such as wind, however, when mounting a measuring instrument at a site, coupling a weight of 200 N to the filament body by a manual operation and fixing the weight onto a prescribed position are extremely difficult, and, since extension of the filament body is generated for the couple of days just after mounting it, recoupling operation of the weight is necessary to be conducted repeatedly.SOLUTION: A displacement measuring instrument comprises: a filament body suspended between one end part connected to a weight provided at one immovable point and the other end part connected to a rewinder provided at the other immovable point in between two points as immovable points; and a displacement gage provided on a structure as a measuring target positioned at an intermediate part of the immovable points and measuring a displacement from the filament body.SELECTED DRAWING: Figure 2
【課題】線条体を不動点間に張架して、その中間部にて計測対象構造物に設けた変位計では、線条体の所定部位からの変位を計測する場合、線条体の張架距離が数十メートルに及ぶことが多く、線条体は風等の気象条件の影響で常時不定量的に振れ続けることを考慮して相当の張力（たとえば重錘を吊り下げる）をかける。しかしながら計測器を現場にて設置する際、２００Ｎの重錘を手操作により線条体に連結して重錘を所定位置に留めることは極めて困難であった。さらに設置した直後から数日は線条体の伸びが発生するため、重錘の再連結操作を繰り返し行う必要があった。【解決手段】不動点となる２点間において、一端部を一方の不動点に設けられた重錘に連結するとともに他端部を他方の不動点に設けられた巻取機に連結され懸架した線条体と、上記不動点の中間に位置する計測対象となる構造物に設けられ上記線条体からの変位を計測する変位計とから構成するようにした。【選択図】図２
DISPLACEMENT MEASURING INSTRUMENT OF STRUCTURE
To solve the problem in which, in a displacement gage where an intermediate part of a filament body stretched between immovable points is provided to a measuring target structure, when measuring a displacement from a prescribed part of the filament body, since a stretching distance of the filament body often reaches dozens of meters, the filament body is applied with adequate tension (e.g. suspending a weight) in consideration of continuing to oscillate the filament body with non-quantitative all the time due to meteorological condition such as wind, however, when mounting a measuring instrument at a site, coupling a weight of 200 N to the filament body by a manual operation and fixing the weight onto a prescribed position are extremely difficult, and, since extension of the filament body is generated for the couple of days just after mounting it, recoupling operation of the weight is necessary to be conducted repeatedly.SOLUTION: A displacement measuring instrument comprises: a filament body suspended between one end part connected to a weight provided at one immovable point and the other end part connected to a rewinder provided at the other immovable point in between two points as immovable points; and a displacement gage provided on a structure as a measuring target positioned at an intermediate part of the immovable points and measuring a displacement from the filament body.SELECTED DRAWING: Figure 2
【課題】線条体を不動点間に張架して、その中間部にて計測対象構造物に設けた変位計では、線条体の所定部位からの変位を計測する場合、線条体の張架距離が数十メートルに及ぶことが多く、線条体は風等の気象条件の影響で常時不定量的に振れ続けることを考慮して相当の張力（たとえば重錘を吊り下げる）をかける。しかしながら計測器を現場にて設置する際、２００Ｎの重錘を手操作により線条体に連結して重錘を所定位置に留めることは極めて困難であった。さらに設置した直後から数日は線条体の伸びが発生するため、重錘の再連結操作を繰り返し行う必要があった。【解決手段】不動点となる２点間において、一端部を一方の不動点に設けられた重錘に連結するとともに他端部を他方の不動点に設けられた巻取機に連結され懸架した線条体と、上記不動点の中間に位置する計測対象となる構造物に設けられ上記線条体からの変位を計測する変位計とから構成するようにした。【選択図】図２
DISPLACEMENT MEASURING INSTRUMENT OF STRUCTURE
構造物の変位計測器
NATSUKAWA KIYOUSUKE (author)
2023-12-14
Patent
Electronic Resource
Japanese
IPC:
E01D
BRIDGES
,
Brücken
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