System Identification of UCSD-NHERI Shake-Table Test of Two-Story Structure with Cross-Laminated Timber Rocking Walls
Publication: Journal of Structural Engineering
Volume 147, Issue 4
Abstract
A full-scale 2-story mass timber building was tested on the University of California San Diego Natural Hazards Engineering Research Infrastructure (UCSD-NHERI) uniaxial shake table during the period from June 2017 to September 2017. The main objective of the experimental program was to test the performance of mass timber building designs with different seismic lateral force–resisting systems. The focus of this study is on a building configuration designed using self-centering post-tensioned cross-laminated timber (CLT) rocking walls with U-shaped steel flexural plate energy dissipators. The shake-table tests were designed to subject the building to a series of earthquake ground motions of increasing intensity, ranging from a service-level earthquake to 1.20 times the maximum considered earthquake intensity. Between each ground motion, low-amplitude white-noise excitations were applied to the building, which responded as a quasilinear system. In this paper, two output-only operational modal analysis methods are used to estimate the modal parameters (frequency, damping, and mode shapes) based on acceleration data collected during the white-noise shake-table tests. The correlations of observed damage and repairs performed during the experimental program with changes in estimated modal features are reported. The modal parameters estimated from the testing program are also compared with a linear finite-element model that is used to validate the modal identification results and study the performance of the two system identification methods for CLT rocking structures.
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Data Availability Statement
Some or all data, models, or code generated or used during the study are available in a repository online in accordance with funder data retention policies (Pei et al. 2019b), or upon reasonable request to the corresponding author.
Acknowledgments
This work was financially supported by the USDA Agricultural Research Service in cooperation with the Tallwood Design Institute under Grant No. 58-0204-6-002. Additional thanks to Simpson Strong-Tie and DR Johnson for support. The National Science Foundation also supported this research project through several collaborative awards, including CMMI 1636164, CMMI 1634204, and CMMI 1634628. The use of the NHERI experimental facility is supported by the National Science Foundation’s Natural Hazards Engineering Research Infrastructure (NHERI) Program. The authors would like to especially thank the NHERI at UCSD site management and staff, who helped greatly in the construction and testing program. The authors also would like to acknowledge individual industry collaborators and students who worked on this project. These include Sarah Wichman, Jace Furley, Brian DeMeza, Gabriele Tamagnone, Daniel Griesenauer, Ethan Judy, Steven Kordziel, Aleesha Busch, Ali Hansan, Joycelyn Ng, Monica Liu, and Ata Mohseni. The opinions presented herein are solely those of the authors.
References
Akbas, T., R. Sause, J. M. Ricles, R. Ganey, J. Berman, S. Loftus, J. D. Dolan, S. Pei, J. W. van de Lindt, and H. E. Blomgren. 2017. “Analytical and experimental lateral-load response of self-centering posttensioned CLT walls.” J. Struct. Eng. 143 (6): 04017019. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001733.
American Wood Council. 2015. National design specification (NDS) supplement: Design values for wood construction 2015 edition. Leesburg, VA: American Wood Council.
ANSI/APA (American National Standards Institute/Engineered Wood Association). 2018. Standard for performance-rated cross-laminated timber. ANSI/APA PRG-320. Tacoma, WA: ANSI/APA.
ASTM 2020. Standard specification for hex cap screws, bolts and studs, steel, heat treated, 120/105/90 ksi minimum tensile strength, general use. ASTM A449-14. West Conshohocken, PA: ASTM.
Baird, A., T. Smith, A. Palermo, and S. Pampanin. 2014. “Experimental and numerical study of U-shape flexural plate (UFP) dissipaters.” In Proc., New Zealand Society for Earthquake Engineering Annual Conf. Wellington, New Zealand: New Zealand Society for Earthquake Engineering.
Barbosa, A. R., R. Soti, A. Sinha, C. Higgins, R. Zimmerman, and E. McDonnell. 2019. In-plane shear and compression behavior of large scale cross-laminated timber panels. Corvallis, OR: Oregon State Univ.
Belleri, A., B. Moaveni, and J. I. Restrepo. 2014. “Damage assessment through structural identification of a three-story large-scale precast concrete structure.” Earthquake Eng. Struct. Dyn. 43 (1): 61–76. https://doi.org/10.1002/eqe.2332.
Blass, H. J., and P. Fellmoser. 2004. “Design of solid wood panels with cross layers.” In Proc., 8th World Conf. on Timber Engineering. Helsinki, Finland: Finnish Association of Civil Engineers.
Blomgren, H., S. Pei, Z. Jin, J. Powers, J. Dolan, J. van de Lindt, A. Barbosa, and D. Huang. 2019. “Full-scale shake table testing of cross-laminated timber rocking shear walls with replaceable components.” J. Struct. Eng. 145 (10): 04019115. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002388.
Bogensperger, T., T. Moosbrugger, and G. Silly. 2010. “Verification of CLT-plates under loads in plane.” In Proc., 11th World Conf. on Timber Engineering 2010, editor by A. Ceccotti. Trentino, Italy: Trees and Timber Institute.
Brincker, R., and P. Andersen. 2006. “Understanding stochastic subspace identification.” In Proc., 24th Int. Modal Analysis Conf. (IMAC-XXIV): A Conf. and Exposition on Structural Dynamics. Society for Experimental Mechanics, 461–466. Red Hook, NY: Curran Associates.
Brincker, R., L. Zhang, and P. Andersen. 2001. “Modal identification of output-only systems using frequency domain decomposition.” Smart Mater. Struct. 10 (3): 441–445. https://doi.org/10.1088/0964-1726/10/3/303.
Ceccotti, A., and M. Follesa. 2006. “Seismic behaviour of multi-storey XLam buildings.” In Proc., COST Action E29 Workshop Earthquake Engineering on Timber Structures. Coimbra, Portugal: Community Research and Development Information Service.
Ceccotti, A., M. Follesa, M. P. Lauriola, and C. Sandhaas. 2006. “Sofie project–test results on the lateral resistance of cross-laminated wooden panels.” In Proc., 1st European Conf. on Earthquake Engineering and Seismicity. Red Hook, NY: Curran Press.
Ceccotti, A., C. Sandhaas, M. Okabe, M. Yasumura, C. Minowa, and N. Kawai. 2013. “SOFIE project: 3D shaking table test on a seven-storey full-scale cross-laminated timber building.” Earthquake Eng. Struct. Dyn. 42 (13): 2003–2021. https://doi.org/10.1002/eqe.2309.
Chen, Z., and M. Popovski. 2020a. “Material-based models for post-tensioned shear wall system with energy dissipators.” Eng. Struct. 213 (Jun): 110543. https://doi.org/10.1016/j.engstruct.2020.110543.
Chen, Z., and M. Popovski. 2020b. “Mechanics-based analytical models for balloon-type cross-laminated timber (CLT) shear walls under lateral loads.” Eng. Struct. 208 (Apr): 109916. https://doi.org/10.1016/j.engstruct.2019.109916.
Chen, Z., M. Popovski, and A. Iqbal. 2020. “Structural performance of post-tensioned CLT shear walls with energy dissipators.” J. Struct. Eng. 146 (4): 04020035. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002569.
CSI (Computers and Structures). 2017. SAP2000: Integrated software for structural analysis and design, version 19. Berkeley, CA: CSI.
Dröscher, J., and R. Brandner. 2013. PA13-903-1 Abschaetzung der Scheibenschubfestigkeit mit dem Pruefverfahren nach Kreuzinger und Sieder 2013. Graz, Austria: Institute of Timber Engineering and Wood Technology.
Dujic, B., K. Strus, R. Zarnic, and A. Ceccotti. 2010. “Prediction of dynamic response of a 7-storey massive XLam wooden building tested on a shaking table.” In Proc., 11th WCTE World Conf. on Timber Engineering, editor A. Ceccotti. Trentino, Italy: Trees and Timber Institute.
Gagnon, S., and M. Popovski. 2011. “Structural design of cross-laminated timber elements.” In CLT handbook: Cross-laminated timber, edited by S. Gagnon and C. Pirvu. Pointe-Claire, QC, Canada: FPInnovations.
Ganey, R., J. Berman, T. Akbas, S. Loftus, J. Daniel Dolan, R. Sause, J. Ricles, S. Pei, J. V. D. Lindt, and H. E. Blomgren. 2017. “Experimental investigation of self-centering cross-laminated timber walls.” J. Struct. Eng. 143 (10): 04017135. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001877.
Granello, G., C. Leyder, A. Frangi, A. Palermo, and E. Chatzi. 2019. “Long-term performance assessment of an operative post-tensioned timber frame structure.” J. Struct. Eng. 145 (5): 04019034. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002308.
Granello, G., A. Palermo, S. Pampanin, S. Pei, and J. van de Lindt. 2020. “Pres-lam buildings: State-of-the-art.” J. Struct. Eng. 146 (6): 04020085. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002603.
Higgins, C., A. R. Barbosa, and C. Blank. 2017. Structural tests of composite concrete-cross-laminated timber floors. Corvallis, OR: Oregon State Univ.
Holden, T., J. Restrepo, and J. B. Mander. 2003. “Seismic performance of precast reinforced and prestressed concrete walls.” J. Struct. Eng. 129 (3): 286–296. https://doi.org/10.1061/(ASCE)0733-9445(2003)129:3(286).
Iqbal, A., S. Pampanin, A. Palermo, and A. H. Buchanan. 2015. “Performance and design of LVL walls coupled with UFP dissipaters.” J. Earthquake Eng. 19 (3): 383–409. https://doi.org/10.1080/13632469.2014.987406.
Kelly, J. M., R. I. Skinner, and A. J. Heine. 1972. “Mechanisms of energy absorption in special devices for use in earthquake resistant structures.” Bull. N. Z. Soc. Earthquake Eng. 5 (3): 63–88.
Kramer, A., A. R. Barbosa, and A. Sinha. 2015. “Performance of steel energy dissipators connected to cross-laminated timber wall panels subjected to tension and cyclic loading.” J. Struct. Eng. 142 (4): E4015013. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001410.
Kurama, Y. C., S. Sritharan, R. B. Fleischman, J. I. Restrepo, R. S. Henry, N. M. Cleland, S. K. Ghosh, and P. Bonelli. 2018. “Seismic-resistant precast concrete structures: State of the art.” J. Struct. Eng. 144 (4): 03118001. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001972.
Magalhães, F., Á. Cunha, E. Caetano, and R. Brincker. 2010. “Damping estimation using free decays and ambient vibration tests.” Mech. Syst. Signal Process. 24 (5): 1274–1290. https://doi.org/10.1016/j.ymssp.2009.02.011.
Mellinger, P., M. Döhler, and L. Mevel. 2016. “Variance estimation of modal parameters from output-only and input/output subspace-based system identification.” J. Sound Vib. 379 (Sep): 1–27. https://doi.org/10.1016/j.jsv.2016.05.037.
Milaj, K., A. Sinha, T. H. Miller, and J. A. Tokarczyk. 2017. “Environmental utility of wood substitution in commercial buildings using life-cycle analysis.” Wood Fiber Sci. 49 (3): 338–358.
Moaveni, B., A. R. Barbosa, J. P. Conte, and F. M. Hemez. 2014. “Uncertainty analysis of system identification results obtained for a seven-story building slice tested on the UCSD-NEES shake-table.” Struct. Control Health Monit. 21 (4): 466–483. https://doi.org/10.1002/stc.1577.
Mugabo, I., A. R. Barbosa, and M. Riggio. 2019. “Dynamic characterization and vibration analysis of a four-story mass timber building.” Front. Built Environ. 5: 86. https://doi.org/10.3389/fbuil.2019.00086.
Palermo, A., S. Pampanin, and A. Buchanan. 2006a. “Experimental investigations on LVL seismic-resistant wall and frame subassemblies.” In Proc., 1st European Conf. on Earthquake Engineering and Seismology. Red Hook, NY: Curran Press.
Palermo, A., S. Pampanin, A. Buchanan, and M. Newcombe. 2005. “Seismic design of multi-storey buildings using laminated veneer lumber (LVL).” In Proc., 2005 New Zealand Society for Earthquake Engineering Conf. Wellington, New Zealand: New Zealand Society for Earthquake Engineering.
Palermo, A., S. Pampanin, M. Fragiacomo, A. H. Buchanan, and B. L. Deam. 2006b. “Innovative seismic solutions for multi-storey LVL timber buildings overview of the research program.” In Proc., 9th World Conf. on Timber Engineering WTCE 2006. Portland, OR: Oregon State University Conference Services.
Pastor, M., M. Binda, and T. Harčarik. 2012. “Modal assurance criterion.” Procedia Eng. 48: 543–548. https://doi.org/10.1016/j.proeng.2012.09.551.
Pei, S., D. Rammer, M. Popovski, T. Williamson, P. Line, and J. W. Van De Lindt. 2016. “An overview of CLT research and implementation in North America.” In Proc., WCTE 2016 World Conf. on Timber Engineering. Vienna, Austria: Vienna Univ. of Technology.
Pei, S., J. van de Lindt, A. Barbosa, J. Berman, E. McDonnell, J. Dolan, H. Blomgren, R. Zimmerman, D. Huang, and S. Wichman. 2019a. “Experimental seismic response of a resilient 2-story mass-timber building with post-tensioned rocking walls.” J. Struct. Eng. 145 (11): 04019120. https://doi.org/10.1061/(ASCE)ST.1943-541X.0002382.
Pei, S., J. van de Lindt, A. Barbosa, J. Dolan, and J. Berman. 2019b. Two-story wood building test. Shake table test of a two-story mass timber building with post-tensioned rocking walls. Thessaloniki, Greece: DesignSafe-CI. https://doi.org/10.17603/ds2-zcb9-ry11.
Popovski, M., J. Schneider, and M. Schweinsteiger. 2010. “Lateral load resistance of cross-laminated wood panels.” In Vol. 4 of Proc., 11th WCTE World Conf. on Timber Engineering, editor by A. Ceccotti, 3394–3403, Trentino, Italy: Trees and Timber Institute, National Research Council.
Priestley, M. J. N. 1991. “Overview of PRESSS research program.” PCI J. 36 (4): 50–57. https://doi.org/10.15554/pcij.07011991.50.57.
Restrepo, J. I., and A. Rahman. 2007. “Seismic performance of self-centering structural walls incorporating energy dissipaters.” J. Struct. Eng. 133 (11): 1560–1570. https://doi.org/10.1061/(ASCE)0733-9445(2007)133:11(1560).
Smith, T., F. Ludwig, S. Pampanin, M. Fragiacomo, A. Buchanan, B. Deam, and A. Palermo. 2007. “Seismic response of hybrid-LVL coupled walls under quasi-static and pseudo-dynamic testing.” In Proc., 2007 New Zealand Society for Earthquake Engineering Conf. Wellington, New Zealand: New Zealand Society for Earthquake Engineering.
Smith, T., S. Pampanin, A. Buchanan, and M. Fragiacomo. 2008. “Feasibility and detailing of post-tensioned timber buildings for seismic areas.” In Proc., 2008 New Zealand Society for Earthquake Engineering Conf. Wellington, New Zealand: New Zealand Society for Earthquake Engineering.
Structural Vibration Solutions. 2017. “ARTeMIS modal.” Accessed April 15, 2018. http://www.svibs.com/products/ARTeMIS_Modal.aspx.
Sustersic, I., M. Fragiacomo, and B. Dujic. 2016. “Seismic analysis of cross-laminated multi-story timber buildings using code-prescribed methods: Influence of panel size, connection ductility, and schematization.” J. Struct. Eng. 142 (4): E4015012. https://doi.org/10.1061/(ASCE)ST.1943-541X.0001344.
Tannert, T., M. Follesa, M. Fragiacomo, P. Gonzalez, H. Isoda, D. Moroder, H. Xiong, and J. van de Lindt. 2018. “Seismic design of cross-laminated timber buildings.” Wood Fiber Sci. 50: 3–26. https://doi.org/10.22382/wfs-2018-037.
van de Lindt, J., J. Furley, M. Amini, S. Pei, G. Tamagnone, A. Barbosa, D. Rammer, P. Line, M. Fragiacomo, and M. Popovski. 2019. “Experimental seismic behavior of a two-story CLT platform building.” Eng. Struct. 183 (15): 408–422. https://doi.org/10.1016/j.engstruct.2018.12.079.
van de Lindt, J. W., S. Pei, S. E. Pryor, H. Shimizu, and H. Isoda. 2010. “Experimental seismic response of a full-scale six-story light-frame wood building.” J. Struct. Eng. 136 (10): 1262–1272. https://doi.org/10.1061/(ASCE)ST.1943-541X.0000222.
Wichman, S. 2018. “Large-scale dynamic testing of rocking cross laminated timber walls.” M.Sc. thesis, Dept. of Civil and Environmental Engineering, Univ. of Washington.
Zimmerman, R. B., and E. McDonnell. 2018. “Framework—Innovation in re-centering mass timber wall buildings.” In Proc., 11th US National Conf. on Earthquake Engineering. Oakland, CA: Earthquake Engineering Research Institute.
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Published In
Journal of Structural Engineering
Volume 147 • Issue 4 • April 2021
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© 2021 American Society of Civil Engineers.
History
Received: May 18, 2020
Accepted: Oct 8, 2020
Published online: Jan 23, 2021
Published in print: Apr 1, 2021
Discussion open until: Jun 23, 2021
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