Experimental Assessment of Structural Damping of Industrial Boiler Structure

Abstract:

This article focuses on the estimation of a proper logarithmic damping decrement in industrial boilers when flue gases travel in the vertical direction. The structure for this type of facility is quite unified worldwide. The structural conception is rather simple, and the response to any static loading is predictable. Nevertheless, with regard to dynamics and damping, some specifics in the detailed solution make this system unique. For the purpose of this analysis, a Plexiglas scale model was prepared at a geometric scale of 1:20. A set of experimental modal analyses was performed on the model. Each test focused on the damping effect of specific details and compared it with the common structure without a damping effect. Finally, a site modal analysis was conducted on an actual boiler located in the CHP Torun Plant in Poland. The upper part of the structure was reinforced to have a horizontal deflection of 8 mm and was suddenly released. The resulting movement was recorded with an HD camera linked to a theodolite. Experimental results on the scale model of the actual structure confirmed that damping of this type of structure is significantly higher than that considered for common steel structures.

• Periodical: Key Engineering Materials (Volume 738)
• Pages: 195-204
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.738.195
• Online since: June 2017
• Authors: Jiri Protivinsky*, Monika Kubzova, Martin Krejsa
• Keywords: Boiler, Damping, Experiment, Measurement, Modal Analysis, Scale Model, Structure

References

[1] S. Arias, V. Arze, V. Bauza, Repairs on Power House and Boiler Support Structure Damaged by 1965 Earthquake, Ventanas 115 MW Steam Electric Station (Chile), in: Shepherd, r. report on the 4th world conference, 1969, Santiago, Chile, pp.31-45.

[2] EN 1991-1-4. Eurocode 1: Actions on structures – Part 1-4: General actions – Wind loads. Brussels: Comite Europeen de Normalisation (CEN), (2013).

[3] P. Dusicka, R. Iwai, Development of Linked Column Frame System for Seismic Lateral Loads. Structural Engineering Research Frontiers. Reston, VA: American Society of Civil Engineers, 2007, Vol. 1, pp.1-13.

DOI: 10.1061/40944(249)63

[4] J. Protivinsky, M. Krejsa, Material Study of a Short Seismic Link in a Dissipative Structure of a Vertical Industrial Boiler, Applied Mechanics and Materials. 623 (2014) 10-17. DOI: 10. 4028/www. scientific. net/AMM. 623. 10.

DOI: 10.4028/www.scientific.net/amm.623.10

[5] J. Kralik, Risk-Based Safety Analysis of the Seismic Resistance of the NPP Structures, in: G. Lombaert, G. Muller, G. De Roeck, G. Degrande (Eds. ), Proceedings of the 8th International Conference on Structural Dynamics - EURODYN 2011, University of Southampton, Institute of Sound Vibration and Research, 2011, pp.292-299.

[6] E. Artioli, R. Battaglia, A. Tralli, Effects of May 2012 Emilia Earthquake on Industrial Buildings of Early 900 on the Po River Line, Engineering Structures. 56 (2013) 1220-1233. DOI: dx. doi. org/10. 1016/j. engstruct. 2013. 06. 026.

DOI: 10.1016/j.engstruct.2013.06.026

[7] V. Ciampi, M. Angelis, S. Cave, G. Luccone, M. Ciucci, Passive Control for Seismic Protection of Critical Components in Industrial Process Plants, in: 13th World Conference on Eartquake Engineering, 2014, Vancouver, Canada, pp.1-15.

[8] F. Paolacci, R. Giannini, M. Angelis, Analysis of the Seismic Risk of Major-Hazard Industrial Plants and Applicability of Innovative Seismic Protection Systems, Petrochemicals. 1. Croatia, in: Tech Europe, 2012, pp.223-248. ISBN 978-953-51-0411-7.

DOI: 10.5772/38365

[9] M. Ciucci, F. Paolacci, G. Ludovisi, A. Moccaldi, Seismic protection of major-hazard industrial installations by using viscoelastic devices, in: 8th World Seminar on Seismic Isolation, Energy Dissipation and Active Vibration Control of Structures, 2003, Yerevan, Armenia, pp.1-10.

DOI: 10.37153/2686-7974-2019-16-202-209

[10] E. Arze, Seismic Design of Industrial Facilities, Tectonophysics: New Horizons in Strong Motion: Seismic Studies and Engineering Practice. 218(1) (1993) 23-41. Also available from: http: /www. sciencedirect. com/science/journal/00401951/218/1.

DOI: 10.1016/0040-1951(93)90257-k

[11] E. Cruz, R. Garcia, G. Vera, D. Valdivia, An Evaluation of Simplified Analysis Model for the Earthquake Response of a Coal Fired Boiler and Its Steel Support Structure, in: The 14th World Conference on Earthquake Engineering, 2008, Beijing, China, pp.1-8.

[12] J. Sertic, D. Kozak, I. Samardzic, Calculation of Reaction Forces in the Supports Using Method of Equivalent Stiffness of Membrane Wall, The Scientific World Journal. 2014 (2014) 1-12. DOI: dx. doi. org/10. 1155/2014/392048.

DOI: 10.1155/2014/392048

[13] J. Vican, P. Janik, Experimental and Numerical Analysis of Beam-Column Resistance, Procedia Engineering. 91 (2014) 280-285. DOI: 10. 1016/j. proeng. 2014. 12. 060. ISSN 18777058.

DOI: 10.1016/j.proeng.2014.12.060

[14] P. Kotes, M. Farbak, P. Kotula, M. Brodnan, A Cavojcova, Using CFRP Lamellas for Strengthening of Dynamically Loaded Beams, Procedia Engineering. 65 (2013) 302-310, DOI: 10. 1016/j. proeng. 2013. 09. 047.

DOI: 10.1016/j.proeng.2013.09.047

[15] K. Kotrasova, I. Grajciar, E. Kormanikova, Dynamic Time-History Response of Cylindrical Tank Considering Fluid - Structure Interaction Due to Earthquake, Applied Mechanics and Materials. 617 (2014).

DOI: 10.4028/www.scientific.net/amm.617.66

[16] I. Major, M. Major, Modeling of Wave Propagation in the ADINA Software for Simple Elastic Structures, Advanced Materials Research. 1020 (2014) 171-176, DOI: 10. 4028/ www. scientific. net/AMR. 1020. 171.

DOI: 10.4028/www.scientific.net/amr.1020.171

[17] J. Melcer, Influence of Damping on FRF of Vehicle Computing Model, in: Transactions of the VSB – Technical University of Ostrava, Civil Engineering Series. 15(2) (2015) 1-7. DOI: 10. 1515/tvsb-2015-0016. ISSN 1804-4824.

DOI: 10.1515/tvsb-2015-0016

[18] K. Aida, K. Kawamura N. Maruyama, K. Suzuki, S. Fujita, T. Chiba, Proofing Tests of Energy Absorbing Seismic Ties for Aseismic Design of Boiler Plant Structures, in: 12 WCEE 2000: 12th World Conference on Earthquake Engineering, January 30 – February 4, 2000, Auckland, New Zeland, Vol. 14: Structural Engineering 2302 - 2850. Auckland: TIBCAT, 2000, pp.1-8.

DOI: 10.1115/pvp2014-28351

[19] B. Goodno, K. Porter, K. Cobeen, Mitigating San Francisco's Soft-Story Building Problem, in: Porter, Tobin, Seligson and Kidd (eds. ), Improving the Seismic Performance of Existing Buildings and Other Structures: Proceedings of the 2009 ATC. Reston, Va.: American Society of Civil Engineers, 2010, pp.1163-1174.

DOI: 10.1061/41084(364)106

[20] J. Protivinsky, M. Krejsa, Using Scaled Physical Model for Assessment of Mechanical Damping of Power Plant Boiler Structure, Perspectives in Science. 2016(7) (2016).

DOI: 10.1016/j.pisc.2015.11.044

[21] G. Reddy, V. Reddy, Diwakar, Theoretical Investigations on Dimensional Analysis of Ball Bearing Parameters by Using Buckingham Pi-Theorem, Procedia Engineering. 97 (2014) 1305-1311. DOI: 10. 1016/j. proeng. 2014. 12. 410. ISSN 18777058.

DOI: 10.1016/j.proeng.2014.12.410

[22] X. Li, A Scaling Approach for the Prediction of High-Frequency Mean Responses of Vibrating Systems, The Journal of the Acoustical Society of America. 5 (2010). DOI: 10. 1121/1. 3397257. ISSN 00014966.