Substructure Identification for an Axially Loaded Member Using Local Vibration Modes
Publication: Journal of Structural Engineering
Volume 146, Issue 7
Abstract
Axially loaded elements play an important role in various civil structures. Knowledge of these crucial members is critical to health monitoring and performance assessment of a structure system in daily service or after a disaster. In the framework of substructure identification, a vibration-based method is proposed to evaluate the mechanical performance of a beam-like structural member by using multipoint dynamic measurements from acceleration, velocity, or displacement sensors. The major advantage of this method is its ability to simultaneously identify axial force, bending stiffness, and boundary conditions of the beam based on the local modal parameters of two or more modes, which is particularly favorable in the case that anchorage devices become complicated and uncertain through long-term service or after disasters like earthquakes. A laboratory experiment is conducted to validate the feasibility and effectiveness of the proposed method.
Get full access to this article
View all available purchase options and get full access to this article.
Data Availability Statement
Some or all data, models, or code generated or used during the study are available from the corresponding author by request.
Acknowledgments
The authors are grateful to the Fundamental Research Funds for the Central Universities (Grant No. 22120180086) for the financial support of this research project.
References
Lagomarsino, S., and C. Calderini. 2005. “The dynamical identification of the tensile force in ancient tie-rods.” Eng. Struct. 27 (6): 846–856. https://doi.org/10.1016/j.engstruct.2005.01.008.
Li, S., E. Reynders, K. Maes, and G. De Roeck. 2013. “Vibration-based estimation of axial force for a beam member with uncertain boundary conditions.” J. Sound Vib. 332 (4): 795–806. https://doi.org/10.1016/j.jsv.2012.10.019.
Maes, K., J. Peeters, E. Reynders, G. Lombaert, and G. De Roeck. 2013. “Identification of axial forces in beam members by local vibration measurements.” J. Sound Vib. 332 (21): 5417–5432. https://doi.org/10.1016/j.jsv.2013.05.017.
Mehrabi, A. B., and H. Tabatabai. 1998. “Unified finite difference formulation for free vibration of cables.” J. Struct. Eng. 124 (11): 1313–1322. https://doi.org/10.1061/(ASCE)0733-9445(1998)124:11(1313).
Rebecchi, G., N. Tullini, and F. Laudiero. 2013. “Estimate of the axial force in slender beams with unknown boundary conditions using one flexural mode shape.” J. Sound Vib. 332 (18): 4122–4135. https://doi.org/10.1016/j.jsv.2013.03.018.
Russell, J. C., and T. J. Lardner. 1998. “Experimental determination of frequencies and tension for elastic cables.” J. Eng. Mech. 124 (10): 1067–1072. https://doi.org/10.1061/(ASCE)0733-9399(1998)124:10(1067).
Zui, H., T. Shinke, and Y. Namita. 1996. “Practical formulas for estimation of cable tension by vibration method.” J. Struct. Eng. 122 (6): 651–656. https://doi.org/10.1061/(ASCE)0733-9445(1996)122:6(651).
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 146 • Issue 7 • July 2020
Copyright
©2020 American Society of Civil Engineers.
History
Received: May 31, 2019
Accepted: Feb 6, 2020
Published online: Apr 29, 2020
Published in print: Jul 1, 2020
Discussion open until: Sep 29, 2020
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.