The examination of applicability of the long basis optical stand sensors regarding the progression of deterioration of the RC bridge deck slabs

• Published in: Infrastructure Maintenance Practices Vol. 1; no. 1; pp. 329 - 336
• Main Authors: MIZUTANI, Akimasa, AOKI, Satoshi, ONO, Kantaro, MAESHIMA, Takuya, KADO, Masuo, IWAKI, Ichiro
• Format: Journal Article
• Language: Japanese
• Published: Japan Society of Civil Engineers 2022
• Subjects: bridge deck; long basis optical strand sensor; rain flow method; wheel tracking test
• ISSN: 2436-777X
• DOI: 10.11532/jsceim.1.1_329

This study examined the applicability of monitoring by using the long basis optical stand sensors to the evaluation of deterioration of the RC deck slabs. The wheel load test adopted a new loading method, loading the close to amount to an actual traffic load. The measurement was to use strain amplitude of the long basis optical stand sensors and the resonance frequency that can grasp the deflection, the crack density and the decrease in rigidity inside deck in order to evaluate the relationship between the strain amplitude and other deterioration indicators.As a result of the test, the strain amplitude can capture the deterioration of the deck to punching shear failure and correlates with the deflection, the crack density and the resonance frequency to indicate the possibility of detecting decrease in the rigidity inside the deck. Rain flow analysis showed the possibility of the evaluating of deterioration when random loads acts to decks at real bridges.