DEVELOPMENT OF THE SYSTEM TO MEASURE THREE-DIMENSIONAL DEFLECTION OF LARGE CONCRETE STRUCTURES USING A LASER DIODE AND A QUADRANT PIN PHOTO DIODE

DEVELOPMENT OF THE SYSTEM TO MEASURE THREE-DIMENSIONAL DEFLECTION OF LARGE CONCRETE STRUCTURES USING A LASER DIODE AND A QUADRANT PIN PHOTO DIODE

In this study the system to measure three-dimensional static and dynamic deflection with 0.5mm accuracy from the distance of 50m to 150m away using a laser beam has been developed. The measuring system consists of two sets of theodolite with the launcher of a laser and the device which receives the...

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Veröffentlicht in:Doboku Gakkai Ronbunshu 1988/09/20, Vol.1988(397), pp.105-113
Hauptverfasser: YOSHIDA, Hirotomo, TANABE, Tadaaki, UMEHARA, Hidetaka, UEHARA, Takumi
Format: Artikel
Sprache:eng
Schlagworte:
concrete structure
deflection
laser beam
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Beschreibung
Zusammenfassung:In this study the system to measure three-dimensional static and dynamic deflection with 0.5mm accuracy from the distance of 50m to 150m away using a laser beam has been developed. The measuring system consists of two sets of theodolite with the launcher of a laser and the device which receives the laser. The system enables to measure the deflection along z axis as well as x and y axes. The deflection of a concrete arch dam caused by solar heat during a daytime is measured by this system, and the obtained results were discussed.
ISSN:0289-7806
1882-7187
DOI:10.2208/jscej.1988.397_105