Comparison of Natural Frequencies of Vibration for a Bridge Obtained from Measurements with New Sensor Systeme
American Journal of Remote Sensing
Volume 2, Issue 4, August 2014, Pages: 30-36
Received: Oct. 3, 2014;
Accepted: Oct. 17, 2014;
Published: Oct. 30, 2014
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Nobuhiro Shimoi, Department of Machine Intelligence and Systems Engineering, Akita Prefectural University, Yurihonjo, 015-0055 Japan
Masahiro Saijo, Department of Development Planning, OYO Corporation, Tsukuba, 305-0841 Japan
Carlos Cuadra, Department of Machine Intelligence and Systems Engineering, Akita Prefectural University, Yurihonjo, 015-0055 Japan
Hirokazu Madokoro, Department of Machine Intelligence and Systems Engineering, Akita Prefectural University, Yurihonjo, 015-0055 Japan
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Deterioration and aging of bridges structures and damage caused by strong earthquakes might be conducive to collapse of the bridge, sometimes with catastrophic consequences. Therefore, investigation of structural condition of bridges is necessary for secure safe road operations. This paper presents a prototype of piezoelectric-cable sensor for vibration monitoring system that permits easy evaluation of the bridge structure integrity. For this study, a bridge located at Yurihonjo city, Japan was chosen as a target structure. The structure is a continuous beam type bridge with steel beams of various sections and lengths and reinforced concrete slabs to support the asphalt carpet. The bridge comprises seven spans with total length of 256 m. Experimental measurements were taken of the first span near the left abutment. Quantitatively, the natural period of vibration is obtainable from signals recorded using the proposed data acquisition system. Subsequently, results obtained from the proposed system are compared with those obtained from common accelerometers. A piezoelectric sensor emits a signal when a change in the stress condition occurs. Therefore, the sensor was set up at the support of the bridge where large changes in the stress level are expected to occur. The target bridge was also subjected to moving loads. Its vibration response was also obtained. The experiment was performed using a track of 19 t of equivalent weight. Responses were captured appropriately using the proposed system. They are comparable to responses obtained using accelerometers. Although the general response pattern is obtained appropriately, it is necessary to improve the accuracy of the proposed system to gather more reliable data. As presented herein, the general outline of the proposed system is described, mentioning the main specifications and assessing possible means to improve the data acquisition system to permit stable and accurate monitoring of bridge structures.
Smart Sensor, Health Monitoring, Natural Vibration Characteristic, Piezoelectric Sensor
To cite this article
Comparison of Natural Frequencies of Vibration for a Bridge Obtained from Measurements with New Sensor Systeme, American Journal of Remote Sensing.
Vol. 2, No. 4,
2014, pp. 30-36.
Ministry of Land, Infrastructure and Transport Report “Research on upgrading of soundness evaluation method for highway PC bridges,” Technical Notes of the National Institute for Land and Infrastructure Management, No.623, 2010, pp.6–14 (in Japanese).
Asahi Shimbun, “Land transport services development table 121 bridge,” 2009 (in Japanese).
N. Shimoi, C.H. Cuadra, H. Madokoro, and M. Saijo, “Simple Smart Piezoelectric Bolt Sensor for Structural Monitoring of Bridges,” International Journal of Instrumentation Science, vol.1, No.5, 2012, pp.78–83, doi: 10.5923/j.instrument.20120105.03.
M. Nakamura, “Development of Structural Health Monitoring System,” Measurement and Control, vol. 41(11), 2002, pp. 819–824 (in Japanese).
Fu-kuo. Chang, “The Demands and Challenges,” Proceedings of the 3rd International Workshop on Structural Health Monitoring, Stanford, CA: Stanford University, 2001, pp.1–8.
M. Nakamura and Y. Yasui, “Damage Evaluation of a Steel Structure Subjected to Strong Earthquake Motion Based on Ambient Vibration Measurements,” Journal of Structural and Construction Engineering. Transactions of AIJ, vol.517, 1999, pp.61–68 (in Japanese).
T. Okabayashi, T. Okumatsu, and Y. Nakamiya, “Experimental Study of Structural Damage Detection Using the High Accurate Structural Vibration-Estimation System,” Journal of Structural Engineering A, vol.51A, 2005, pp.479–490 (in Japanese).
S. Kurosaki, Y. Sasaki, and S. Izumi, “Trial of Measurements for Axial Force of Bolt Using Piezo Cable,” Journal of the Japanese Society for Non-Destructive Inspection, vol.56 (3), 2007, pp.149–154 (in Japanese).
Y. Nitta, K. Imamoto, and A. Nishitani , “Structural Health Monitoring using Piezoelectric Cable,” Summaries of Technical Papers of Annual Meeting Architectural Institute of Japan. B-2, Structures II, Structural Dynamics Nuclear Power Plants, 2006, pp.891–892 (in Japanese).
Tokyo Sensor Co., Ltd. , “Piezoelectric Cable,” Traffic Sensors, 2010, pp.18–19 (in Japanese).
Tokyo Sensor Co., Ltd. , “Piezo Film Technical Manual,” V1.0, R1, 2001, pp.17–18 (in Japanese). http://www.t-sensor.co.jp/piezo_film/cable/