Measured response of instrumented buildings during the 2013 Cook Strait earthquake sequence
With the recent high level of earthquake activity throughout New Zealand there is growing awareness of the need for quick and reliable determination of whether buildings are safe. In parallel, on-going advances in sensors and computing technology have resulted in the potential for new and innovative sensing systems which could change the way that civil infrastructure is monitored, controlled and maintained.
Following the 21 July 2013, MW 6.5 Cook Strait earthquakes, seven buildings in the Wellington region were instrumented with low-cost accelerometers to record building response data sets during aftershock excitations. A summary of the data analyses and insightful information obtained through processing and interpretation of the raw data is presented. Key challenges and considerations of installing a permanent structural monitoring system into buildings in New Zealand are discussed. The goal was to relate building performance indicators to decision making processes regarding the safety and resilience of structures post-earthquake. The information obtained was sufficiently reliable and valuable to the decision making process and New Zealand can expect more permanently instrumented buildings in the future.
Bannister S and Gledhill K (2012). “Evolution of the 2010-2012 Canterbury Earthquake Sequence”. New Zealand Journal of Geology and Geophysics. 55(3): 295-304. DOI: https://doi.org/10.1080/00288306.2012.680475
GNS Science (2013). Cook Strait Aftershocks & Forecast Probabilities. http://www.info.geonet.org.nz/display/home/Cook+Strait+aftershocks+and+forecast+probabilities. (Accessed 05/04/2014).
GNS Science (2014). Eketahuna Earthquake. http://info.geonet.org.nz/display/home/Eketahuna+Earthquake. (Accessed 05/04/2014).
International Business Machines Corporation (2013). “IBM’s smarter cities challenge report: Christchurch”. IBM Corporate Citizenship and Corporate Affairs, Armonk, NY, 44 pp.
Glaser SD, Li H, Wang ML, Ou J and Lynch J (2007). “Sensor technology innovation for the advancement of structural health monitoring: a strategic program of US-China research for the next decade”, Smart Structures and Systems, 3(2): 221-224. DOI: https://doi.org/10.12989/sss.2007.3.2.221
Kuok SC and Yuen KV (2013). “Structural health monitoring of a reinforced concrete building during the severe typhoon Vicente in 2012”. The Scientific World Journal, 2013, 509350. DOI: https://doi.org/10.1155/2013/509350
International Building Code (2012). “IBC, ICC, Appendix L: Earthquake Recording Instrumentation (Second Printing)”. International Code Council, United States of America. Figure 25: Acceleration profile of floor diaphragm in Building G which correlates to observed damage. Red lines represent floor cracking that developed during the Cook Strait earthquake sequence.
Celebi M (2002). “Seismic instrumentation of buildings (with emphasis on federal buildings)”. Technical Report No. 0-7460-68170, United States Geological Survey (USGS), Menlo Park, CA, USA.
Uma SR, King A, Cousins J and Gledhill K (2011). “The GeoNet building instrumentation programme”. Bulletin of the New Zealand Society for Earthquake Engineering, 44(1), 53 – 63. DOI: https://doi.org/10.5459/bnzsee.44.1.53-63
Thomson E and Bradley B (2014). “Preliminary analysis of instrumented Wellington building responses in the July/August 2013 Seddon/Lake Grassmere earthquakes”. Proceedings of the New Zealand Society of Earthquake Engineering Conference (NZSEE), Auckland, New Zealand, 21-23 March, 2014, Paper No 76.
Sun M, Staszewski WJ and Swamy RN (2010). “Smart sensing technologies for structural health monitoring of civil engineering structures”. Advances in Civil Engineering, 2010, 724962. DOI: https://doi.org/10.1155/2010/724962
Farrar CR and Worden K (2012). “Structural health monitoring: A machine learning perspective”. John Wiley & Sons Ltd, West Sussex, United Kingdom, 631 pp. DOI: https://doi.org/10.1002/9781118443118
Lynch JP and Loh KJ (2006). “A summary review of wireless sensors and sensor networks for structural health monitoring”. Shock and Vibration Digest, 38(2): 91 – 130. DOI: https://doi.org/10.1177/0583102406061499
Lynch JP, Law KH, Kiremidjian AS, Kenny TW, Carryer E and Partridge A (2001). “The design of a wireless sensing unit for structural health monitoring”. Proceedings of the 3rd International Workshop on Structural Health Monitoring (IWSHM), Stanford, CA, USA, 12-14 September 2001.
Beskhyroun S, Wotherspoon L, Ma Q and Popli B (2013). “Ambient and forced vibration testing of a 13-story reinforced concrete building”. Proceedings of the New Zealand Society for Earthquake Engineering Conference (NZSEE), Wellington, New Zealand, 26 – 28 April 2013.
Ren W and De Roeck G (2002). “Structural damage identification using modal data. I: Simulation verification”. Journal of Structural Engineering, 128(1): 87 – 95. DOI: https://doi.org/10.1061/(ASCE)0733-9445(2002)128:1(87)
Farrar CR and Worden K (2007). “An introduction to structural health monitoring”. Philosophical Transactions of the Royal Society A: Mathematical, Physical and Engineering Sciences, 365(1851): 303 – 315. DOI: https://doi.org/10.1098/rsta.2006.1928
Standards New Zealand (2004). “NZS1170.5: Structural Design Actions, Part 5: Earthquake actions, New Zealand”. Standards New Zealand, Wellington, New Zealand.
ANSS Structural Instrumentation Guideline Committee (2005). “Guideline for ANSS seismic monitoring of engineered civil systems, Version 1.0”. Open-File Report 2005-1039, March 2005, U.S. Geological Survey (USGS).
Uma SR (2007). “Seismic instrumentation of buildings - A promising step for performance based design in New Zealand”. Proceeding of the New Zealand Society for Earthquake Engineering Conference (NZSEE), Palmerston North, New Zealand, 30 March – 1 April 2007, Paper No 40.
Bolt BA (1973). “Duration of strong ground motion”. Proceedings of the 5th World Conference on Earthquake Engineering (5WCEE), Rome, Italy, 25 – 29 June 1973, 1304 – 1313.
Garini E and Gazetas G (2012). “Destructiveness of earthquake ground motions: ‘Intensity measures’ versus sliding displacement”. Proceedings of the 2nd International Conference on Performance-Based Design in Earthquake Geotechnical Engineering, Taormina, Italy, 28 – 30 May 2012, Paper No 7.07, 886 – 899.
Arias A (1970). “A measure of earthquake intensity” in Seismic Design for Nuclear Power Plants”. Institute of Technology Press, Cambridge, MA, USA, 438 – 483.
Campbell KW and Bozorgnia Y (2008). “NGA ground motion model for the geometric mean horizontal component of PGA, PGV, PGD and 5% damped linear elastic response spectra for periods ranging from 0.01 to 10 s”. Earthquake Spectra, 24(1): 139 – 171. DOI: https://doi.org/10.1193/1.2857546
Bendat JS and Piersol AG (1980). “Engineering applications of correlation and spectral analysis”. Wiley – Interscience, New York, United States of America.
Brincker R, Zhang L and Andersen P (2000). “Modal identification from ambient responses using frequency domain decomposition”. Proceedings of the 18th International Modal Analysis Conference (IMAC XVIII), San Antonio, Texas, United States of America, 7 – 10 February 2000.
Jacobsen NJ, Andersen P and Brincker R (2007). “Using EFDD as a robust technique for deterministic excitation in operational modal analysis”. Proceedings of the 2nd International Operational Modal Analysis Conference (IOMAC), Copenhagen, Denmark, 30 April – 2 May, 2007, 193 – 200.
Van Overschee P, De Moor B, Dehandschutter W and Swevers J (1997). “A subspace algorithm for the identification of discrete time frequency domain power spectra”. Automatica, 33(12): 2147 – 2157. DOI: https://doi.org/10.1016/S0005-1098(97)00126-X
Katayama T (2006). “Subspace methods for system identification”. Springer-Verlag Ltd. London. United Kingdom.
Beskhyroun S (2011). “Graphical interface toolbox for modal analysis”. Proceedings of the 9th Pacific Conference on Earthquake Engineering Building an Earthquake-Resilient Society (PCEE), Auckland, New Zealand, 14-16 April 2011.
Ma Q, Beskhyroun S, Simkin GB, Wotherspoon LW, Ingham JM, Cole G, Gebreyohaness A and Sharpe R (2014). “Experimental evaluation of inter-storey drifts during the Cook Strait earthquake sequence”. Proceedings of the New Zealand Society of Earthquake Engineering Conference (NZSEE), Auckland, New Zealand, 21 – 23 March 2014, Paper No 75.
Haritos N (2009). “Low cost accelerometer sensors – applications and challenges”. Proceedings of the Australian Earthquake Engineering Society Conference (AEES), Newcastle, Australia, 2009.
Beskhyroun S and Ma Q (2012). “Low-cost accelerometers for experimental modal analysis”. Proceedings of the 15th World Conference on Earthquake Engineering (15WCEE), Lisbon, Portugal, 24 – 28 September 2012.
GNS Science (2013). M 6.6, Lake Grassmere, 16 August 2013. http://www.info.geonet.org.nz/display/quake/M+6.6,+Lake+Grassmere,+16+August+2013. (Accessed 19/04/2014).
Standards New Zealand (2004). “NZS1170.5: Structural Design Actions, Part 5: Earthquake actions, New Zealand, Commentary”. Standards New Zealand, Wellington, New Zealand.
Holden C, Kaiser A, Van Dissen R and Jury R (2013). “Sources, ground motion and structural response characteristics in Wellington of the 2013 Cook Strait earthquakes”. Bulletin of the New Zealand Society for Earthquake Engineering, 46(4): 188 – 193. DOI: https://doi.org/10.5459/bnzsee.46.4.188-195
Copyright (c) 2015 Gye Simkin, Sherif Beskhyroun, Quincy Ma, Liam Wotherspoon, Jason Ingham
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