維持・管理／検査技術・診断 (11)

[VI-729] Measurement of displacement of Uphill truss bridge RC floor using optical fiber sensor Measurement of displacement of Uphill truss bridge RC floor using optical fiber sensor.

*園山 俊貴¹、横山 広¹、田中 大気¹、町田 信彦¹、田代 大樹¹ (1. 大日本コンサルタント株式会社)

Keywords:Lower path steel truss bridge, Reinforced concrete slab, Maintenance, Optical fiber sensor, Displacement measurement, Temperature change

Optical fiber sensors were installed on floor slabs and chords for a steel truss continuous truss bridge, and the amount of change in the bridge axial direction was measured. As a result of measurement, the difference in length change amount was confirmed on the north side and the south side, and the difference in the peak position of the length change was confirmed on the south side chord material and the floor slab. These are considered to be due to the effects of solar radiation, and are considered to be the causes of many right-angled cracks.