Remote Modal Study of Reinforced Concrete Buildings Using a Multipath Lidar Vibrometer
Publication: Journal of Structural Engineering
Volume 141, Issue 1
Abstract
Over recent years there has been growing interest in building frequency analysis using ambient vibrations in the fields of structural engineering with application to earthquakes, health monitoring, or operative testing. The direct applications are (1) to define the modal characteristics of existing buildings for modeling their seismic response, (2) to monitor the long-term variations in their structural health, and (3) to detect and localize changes in the structure such as those produced by earthquake damage. Simultaneously, velocity measurements with laser remote sensing techniques have gained interest for several applications. For example, coherent lidar systems enable accurate measurement of the vibration velocity of remote targets. This allows operative modal analysis (OMA) of potentially damaged buildings, for their diagnosis from a safe distance after a seismic event. This paper compares the frequency analyses obtained using sensitive velocimeter sensors and coherent lidar sensors, applied to a number of existing reinforced concrete (RC) buildings. Ambient vibrations recorded by velocimeters are processed using the frequency domain decomposition method for defining building frequency and mode shape, while the laser remote sensing approach uses the coherent lidar method to measure velocity, frequency, and mode shape. The results of a real-scale trial on five buildings in Grenoble, France, are presented. The reliability of this technique for remote structural diagnosis is discussed and the modal parameters, as measured by lidar at a range of 200 m and by in situ velocimeters, are compared. The results from the two instruments were in good agreement, which leads us to conclude on the ability of the coherent lidar approach to assess the modal frequencies and mode shapes of existing buildings at long range and without any retroreflectors on the structure for structural and earthquake engineering purposes.
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Acknowledgments
This work was supported by the French Research National Agency (ANR) under the RiskNat program (project URBASIS n°ANR-09-RISK-009). The authors thank Veronique Jolivet (ONERA) and Julien Totems (ONERA) for their contribution to the design of the lidar.
References
Aldea, A., Liba, M., Demetriu, S., and Kashima, T. (2007). “Evidence of soil-structure interaction from earthquake records at a high-rise building site in Bucharest.” Proc., 4th Int. Conf. on Earthquake Geotechnical Engineering, Paper No. 1523, International Society of Soil Mechanics and Geotechnical Engineering, 25–28.
Banks, H. T., Inman, D. J., Leo, D. J., and Wang, Y. (1996). “An experimentally validated damage detection theory in smart structures.” J. Sound Vibr., 191(5), 859–880.
Blume, J. A. (1972). “Highrise building characteristics and responses determined from nuclear seismology.” Bull. Seismol. Soc. Am., 62(2), 519–540.
Brincker, R., Zhang, L., and Andersen, P. (2001). “Modal identification of output only systems using frequency domain decomposition.” Smart Mater. Struct., 10(2), 441–445.
Cariou, J.-P., and Augere, B. (1999). “Performance of an erbium laser vibration sensor.” AeroSense'99. Int. Society for Optics and Photonics, 491–498.
Celebi, M., Phan, L. T., and Marshall, R. D. (1993). “Dynamic characteristics of five tall buildings during strong and low-amplitude motions.” Struct. Des. Tall Build., 2(1), 1–15.
Chatelain, J.-L., et al. (2000). “Cityshark: A user-friendly instrument dedicated to ambient noise (microtremor) recording for site and building response studies.” Seismol. Res. Lett., 71(6), 698–703.
Chatelain, J.-L., and Guillier, B. (2013). “Reliable fundamental frequencies of soils and buildings down to 0.1 Hz obtained from ambient vibration recordings with a 4.5-Hz sensor.” Seismol. Res. Lett., 84(2), 199–209.
Chatelain, J.-L., Guillier, B., Guéguen, P., Fréchet, J., and Sarrault, J. (2012). “Ambient vibration recording for single-station, array and building studies made simple: CityShark II.” Int. J. Geosci., 03(6A), 1168–1175.
Chopra, A. K., and Goel, R. K. (2000). “Building period formulas for estimating seismic displacements.” Earthquake Spectra, 16(2), 533–536.
Clinton, J. F., Bradford, S. C., Heaton, T. H., and Favela, J. (2006). “The observed wander of the natural frequencies in a structure.” Bull. Seismol. Soc. Am., 96(1), 237–257.
Clinton, J. F., and Heaton, T. H. (2002). “Potential advantages of a strong-motion velocity meter over a strong-motion accelerometer.” Seismol. Res. Lett., 73(3), 332–342.
Crouse, C. B., and Jennings, P. C. (1975). “Soil-structure interaction during the San Fernando earthquake.” Bull. Seismol. Soc. Am., 65(1), 13–36.
Deraemaker, A., Reynders, E., De Roeck, G., and Kulla, J. (2008). “Vibration-based structural health monitoring using output-only measurements under changing environment.” Mech. Syst. Signal Process., 22(1), 34–56.
Doebling, S. W., Farrar, C. R., Prime, M. B., and Shevitz, D. W. (1996). “Damage identification and health monitoring of structural and mechanical systems from changes in their vibration characteristics: A literature review.” Technical Rep. LA-13070-MS., Los Alamos National Laboratory, New Mexico.
Dunand, F., et al. (2004). “Utilisation du bruit de fond pour l’analyse des dommages des bâtiments de Boumerdes suite au séisme du 21 mai 2003.” Memoires du Service Geologique Algerien, 12, 177–191.
Dunand, F., Gueguen, P., Bard, P. Y., Rodgers, J., and Celebi, M. (2006). “Comparison of the dynamic parameters extracted from weak, moderate and strong building motion.” Proc., 1st European Conf. of Earthquake Engineering and Seismology, SGEB-Swiss Society for Earthquake Engineering, 1021.
Farrar, C. R., Doebling, S. W., and Nix, D. A. (2001). “Vibration-based structural damage identification.” Philos. Trans. R. Soc. A, 359(1778), 131–149.
Farrar, C. R., and Worden, K. (2007). “An introduction to structural health monitoring.” Philos. Trans. R. Soc. A, 365(1851), 303–315.
Gallipoli, M. R., Mucciarelli, M., and Vona, M. (2009). “Empirical estimate of fundamental frequencies and damping for Italian buildings.” Earthquake Eng. Struct. Dyn., 38(8), 973–988.
Goel, R. K., and Chopra, A. K. (1998). “Period formulas for concrete shear wall buildings.” J. Struct. Eng., 426–433.
Gueguen, P., Jolivet, V., Michel, C., and Schveitzer, A.-S. (2010). “Comparison of velocimeter and coherent lidar measurements for building frequency assessment.” Bull. Earthquake Eng., 8(2), 327–338.
Halkon, B. J., and Rothberg, S. J. (2004). “Synchronised-scanning laser vibrometry.” Proc., Sixth Int. Conf. on Vibration Measurements Laser Techniques, Vol. 5503, International Society for Optics and Photonics, 260–271.
Housner, G. W. (1957). “Interaction of buildings and ground during an earthquake.” Bull. Seismol. Soc. Am., 47(3), 179–186.
Hua, X. G., Ni, Y. Q., Ko, J. M., and Wong, K. Y. (2007). “Modeling of temperature-frequency correlation using combined principal component analysis and support vector regression technique.” J. Comput. Civ. Eng., 122–135.
Ivanovic, S. S., Trifunac, M. D., Novikova, E. I., Gladkov, A. A., and Todorovska, M. I. (2000). “Ambient vibration tests of a seven-story reinforced concrete building in Van Nuys, California, damaged by the 1994 Northridge earthquake.” Soil Dyn. Earthquake Eng., 19(6), 391–411.
Jennings, P. C., and Kuroiwa, J. H. (1968). “Vibration and soil-structure interaction tests of a nine-story reinforced concrete building.” Bull. Seismol. Soc. Am., 58(3), 891–916.
Kohler, M. D., Davis, P. M., and Safak, E. (2005). “Earthquake and ambient vibration monitoring of the steel-frame UCLA factor building.” Earthquake Spectra, 21(3), 715–736.
Kohler, M. D., Heaton, T. H., and Bradford, S. C. (2007). “Propagating waves in the steel moment-frame factor building recorded during Earthquakes.” Bull. Seismol. Soc. Am., 97(4), 1334–1345.
Luco, J. E., Trifunac, M. D., and Wong, H. L. (1987). “On the apparent change in dynamic behavior of a nine-story reinforced concrete building.” Bull. Seismol. Soc. Am., 77(6), 1961–1983.
Michel, C., and Gueguen, P. (2010). “Time-frequency analysis of small frequency variations in civil engineering structures under weak and strong motions using a reassignment method.” Struct. Health Monit., 9(2), 159–171.
Michel, C., Gueguen, P., and Bard, P.-Y. (2008). “Dynamic parameters of structures extracted from ambient vibration measurements: An aid for the seismic vulnerability assessment of existing buildings in moderate seismic hazard regions.” Soil Dyn. Earthquake Eng., 28(8), 593–604.
Michel, C., Gueguen, P., and Causse, M. (2012). “Seismic vulnerability assessment to slight damage based on experimental modal parameters.” Earthquake Eng. Struct. Dyn., 41(1), 81–98.
Michel, C., Guéguen, P., El Arem, S., Mazars, J., and Kotronis, P. (2010a). “Full-scale dynamic response of an RC building under weak seismic motions using earthquake recordings, ambient vibrations and modelling.” Earthquake Eng. Struct. Dyn., 39(4), 419–441.
Michel, C., Gueguen, P., Lestuzzi, P., and Bard, P.-Y. (2010b). “Comparison between seismic vulnerability models and experimental dynamic properties of existing buildings in France.” Bull. Earthquake Eng., 8(6), 1295–1307.
Mikael, A., Guéguen, P., Bard, P.-Y., Roux, P., and Langlais, M. (2013). “Long-term frequency and damping wandering in buildings analysed using the random decrement technique (RDT).” Bull. Seismol. Soc. Am., 103(1), 236–246.
Nayeri, R. D., Masri, S. F., Ghanem, R. G., and Nigbor, R. L. (2008). “A novel approach for the structural identification and monitoring of a full-scale 17-story building based on ambient vibration measurements.” Smart Mater. Struct., 17(2), 1–19.
Oliveira, C. S., and Navarro, M. (2010). “Fundamental periods of vibration of RC buildings in Portugal from in-situ experimental and numerical techniques.” Bull. Earthquake Eng., 8(3), 609–642.
Pandey, A. K., and Biswas, M. (1994). “Damage detection in structures using changes in flexibility.” J. Sound Vibr., 169(1), 3–7.
Pandey, A. K., Biswas, M., and Samman, M. M. (1991). “Damage detection from changes in curvature mode shapes.” J. Sound Vibr., 145(2), 321–332.
Péquegnat, C., Guéguen, P., Hatzfeld, D., and Langlais, M. (2008). “The French accelerometric network (RAP) and national data centre (RAP-NDC).” Seismol. Res. Lett., 79(1), 79–89.
Perrault, M., Gueguen, P., Aldea, A., and Demetriu, S. (2013). “Reducing the uncertainties of the fragility curves using experimental testing in existing buildings: The case of the BRD Tower of Buccarest (Romania).” Earthquake Eng. Vibr., 12(4), 643–658.
Ray, L. R., and Tian, L. (1999). “Damage detection in smart structures through sensitivity enhancing freedback control.” J. Sound Vibr., 227(5), 987–1002.
Satake, N., and Yokota, H. (1996). “Evaluation of vibration properties of high-rise steel buildings using data of vibration tests and earthquake observations.” J. Wind Eng. Ind. Aerodyn., 59(2), 265–282.
Todorovska, M. I. (2009). “Soil-structure system identification of Millikan Library north-south response during four earthquakes (1970–2002): What caused the observed wandering of the system frequencies?” Bull. Seismol. Soc. Am., 99(2A), 626–635.
Todorovska, M. I., and Al Rjoub, Y. (2006). “Effects of rainfall on soil-structure system frequency: Example based on poroelasticity and a comparison with full-scale measurements.” Soil Dyn. Earthquake Eng., 26(6–7), 708–717.
Ventura, C. E., Liam Finn, W. D., Lord, J. F., and Fujita, N. (2003). “Dynamic characteristics of a base isolated building from ambient vibration measurements and low level earthquake shaking.” Soil Dyn. Earthquake Eng., 23(4), 313–322.
Volant, P., Orbovic, N., and Dunand, F. (2002). “Seismic evaluation of existing nuclear facility using ambient vibration test to characterize dynamic behavior of the structure and microtremor measurements to characterize the soil: A case study.” Soil Dyn. Earthquake Eng., 22(9), 1159–1167.
Xu, G. Y., Zhu, W. D., and Emory, B. H. (2007). “Experimental and numerical investigation of structural damage detection using changes in natural frequencies.” J. Vibr. Acoust., 129(6), 686–700.
Zhang, Z. A., and Aktan, A. E. (1995). “The damage indices for constructed facilities.” IMAC, Society of Experimental Mechanics (SEM), Nashville, 1520–1529.
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Published In
Journal of Structural Engineering
Volume 141 • Issue 1 • January 2015
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© 2014 American Society of Civil Engineers.
History
Received: May 3, 2013
Accepted: Mar 26, 2014
Published online: Jul 11, 2014
Discussion open until: Dec 11, 2014
Published in print: Jan 1, 2015
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