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 ENG  Vol.5 No.11 , November 2013
Load-Measuring Pot Bearing with Built-In Load Cell —Part I: Design and Performance
Abstract: This paper presents the underlying principle and the results of various performance evaluations for a load-measuring pot bearing with built-in load cell. The pot bearing composed of a pot made of steel in which an elastomer disk is inserted is a bearing supporting larger loads than the elastomeric bearing and accommodating rotational movement. Owing to a Poisson’s ratio close to 0.5, elastomer withstands hydrostatic pressure when confined in a rigid body. Accounting for this principle, the vertical load applied on the pot bearing can be obtained by converting the pressure acting on the elastomer. Therefore, a load-measuring pot bearing is developed in this study by embedding a load cell exhibiting remarkable durability in the base plate of the bearing. The details for the insertion of the load cell in the base plate of the pot were improved through finite element analysis to secure sufficient measurement accuracy. The evaluation of the static performance of the pot bearing applying these improved details verified that the bearing exhibited sufficient accuracy for the intended measurement purpose. The dynamic performance evaluation results indicated that accurate measurement of the dynamic load was also achieved without time lag.
Cite this paper: J. Cho, Y. Kim, J. Kwark, S. Park, W. Chin and B. Kim, "Load-Measuring Pot Bearing with Built-In Load Cell —Part I: Design and Performance," Engineering, Vol. 5 No. 11, 2013, pp. 856-864. doi: 10.4236/eng.2013.511104.
References

[1]   Maurer, “Bridge Bearings with Load Measuring Capability,” 2013. http://www.maurer-soehne.com

[2]   A. K. Agrawal, K. Subramaniam and Y. Pan, “Development of Smart Bridge Bearings System: A Feasibility Study,” City University of New York, New York, 2005.

[3]   J. F. Choo, D. H. Ha, N. S. Goo and W. S. Jang, “Preliminary Tests for a Multi-Functional Bridge Bearing with Built-in Piezoelectric Material,” Advanced Science Letters, Vol. 19, No. 1, 2013, pp. 37-41.
http://dx.doi.org/10.1166/asl.2013.4714

[4]   E. Udd, W. L. Schulz, J. M. Seim, K. Corona-Bittick, J. Dorr, K. T. Slattery, H. M. Laylor and G. E. McGill, “Fiber Optic Smart Bearing Load Structure,” In: S. B. Chase, Ed., Nondestructive Evaluation of Bridges and Highways III, 1999, pp. 40-48. http://dx.doi.org/10.1117/12.339933

[5]   S. J. Chang, N. S. Kim and J. H. Baek, “Development of Smart Seismic Device Using FBG Sensor for Measuring Vertical Load,” Transactions of the Korean Society for Noise and Vibration Engineering, Vol. 22, No. 11, 2012, pp. 1089-1098, in Korean.
http://dx.doi.org/10.5050/KSNVE.2012.22.11.1089

[6]   J.-R. Cho, Y. J. Kim, S. Y. Park, B.-S. Kim and J. I. Lee, “Development of High Performance Bearing for Bridge I: Load Measurable Bearing,” Proceedings of the 2002 Conference of the Korean Society of Civil Engineers, 2002, pp. 221-224, in Korean.

[7]   Korea Institute of Construction Technology, “R&D on the Safety of High-Speed Railway Structures,” R&D Report, 2001, in Korean.

[8]   Korea Institute of Construction Technology, “R&D on the Safety of High-Speed Railway Structures,” R&D Report, 2002, in Korean.

[9]   Korea Institute of Construction Technology, “Development of Stabilization Techniques for Track Construction System of the High-speed Railway,” R&D Report, 2003, in Korean.

[10]   Korean Standards Association, KS F 4424, “Pot Bearings for Bridges,” 1996, in Korean.

 
 
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