Investigating the impact of design criteria on the expected seismic losses of multi-storey office buildings
DOI:
https://doi.org/10.5459/bnzsee.56.1.11-28Abstract
The Ministry of Building, Innovation and Employment is developing advice on how to deliver Low Damage Seismic Design (LDSD) protection for buildings through their Tū Kahika: Building Resilience platform. The draft LDSD advice is considering a design drift limit for multi-storey buildings of 0.5% as part of new damage control limit state design checks. The potential impact of this design criterion on the expected annual loss due to repair costs is investigated for generic reinforced concrete wall case-study office buildings of 4- and 12-storeys in both Wellington and Christchurch. The equivalent static method, in line with NZS 1170.5 and NZS 3101, was used to design the buildings to conventional and draft LDSD specifications, representing current and future state-of-practice designs. The draft LDSD advice aims to limit the expected annual loss of complying buildings to below 0.1% of building replacement cost. This research tested this expectation. Losses were estimated in accordance with FEMA P-58, using building responses from non-linear time history analyses. Although it is found that the new drift limit alone may not limit seismic losses to the target values owing to damage to acceleration-sensitive elements, the results do support the intentions of the draft design advice to significantly reduce the expected seismic losses of complying buildings. The study also highlighted the importance of using an accurate approximation of RC wall stiffness for LDSD, and provides insight into different design strategies that could be followed to effectively limit losses in RC wall buildings as part of LDSD.
References
Baird A and Ferner H (2017). "Damage to non-structural elements in the 2016 Kaikōura earthquake". Bulletin of the New Zealand Society for Earthquake Engineering, 50(2): 187-193. https://doi.org/10.5459/bnzsee.50.2.187-193 DOI: https://doi.org/10.5459/bnzsee.50.2.187-193
Dhakal RP (2010). "Damage to non-structural components and contents in 2010 Darfield Earthquake". Bulletin of the New Zealand Society for Earthquake Engineering, 43(4): 404-411. https://doi.org/10.5459/bnzsee.43.4.404-411 DOI: https://doi.org/10.5459/bnzsee.43.4.404-411
Yeow TZ, Orumiyehei A, Sullivan TJ, MacRae GA, Clifton GC and Elwood KJ (2018). "Seismic performance of steel friction connections considering direct-repair costs". Bulletin of Earthquake Engineering, 16(12): 5963-5993. https://doi.org/10.1007/s10518-018-0421-x DOI: https://doi.org/10.1007/s10518-018-0421-x
Standards New Zealand (2002). "AS/NZS 1170.1:2002 Structural Design Actions. Part 1: Permanent, Imposed and Other Actions". Standards New Zealand, Wellington, 31pp.
Standards New Zealand (2006). "NZS 3101:2006. Concrete Structures Standard". Standards New Zealand, Wellington, 756pp.
Standards New Zealand (2004). "NZS 1170.5:2004. Structural Design Actions. Part 5: Earthquake Actions". Standards New Zealand, Wellington, 88pp.
McKenna F, Fenves GL, Scott MH and Mazzoni S (2006). "OpenSees Command Language Manual". University of California, Berkeley, USA, 465pp. https://opensees.berkeley.edu/OpenSees/manuals/usermanual/OpenSeesCommandLanguageManualJune2006.pdf
Standards New Zealand (2011). "AS/NZS 1170.2:2011. Structural Design Actions. Part 2: Wind Actions". Standards New Zealand, Wellington, 102pp.
Priestley MJN and Kowalsky MJ (1998). "Aspects of drift and ductility capacity of rectangular structural walls". Bulletin of the New Zealand National Society for Earthquake Engineering, 31(2): 73-85. https://doi.org/10.5459/bnzsee.31.2.73-85 DOI: https://doi.org/10.5459/bnzsee.31.2.73-85
Paulay T (2002). "The displacement capacity of reinforced concrete coupled walls". Engineering Structures, 24(9): 1165-1175. https://doi.org/10.1016/S0141-0296(02)00050-0 DOI: https://doi.org/10.1016/S0141-0296(02)00050-0
Priestley MJN, Calvi GM and Kowalsky MJ (2007). "Displacement-Based Seismic Design of Structures". 1st Ed., ISBN 978-88-6198-000-6, IUSS Press, Pavia, Italy, 721pp.
Otani S (1981). "Hysteretic models for reinforced concrete for earthquake analysis". Facility of Engineering, XXXVI(2): 125-156.
Fox MJ, Sullivan TJ and Beyer K (2014). "Comparison of force-based and displacement-based design approaches for RC coupled walls in New Zealand". Bulletin of the New Zealand Society for Earthquake Engineering, 47(3): 190-205. https://doi.org/10.5459/bnzsee.47.3.190-205 DOI: https://doi.org/10.5459/bnzsee.47.3.190-205
Pettinga JD, Christopoulos C, Pampanin S and Priestley MJN (2007). "Effectiveness of simple approaches in mitigating residual deformations in buildings". Earthquake Engineering and Structural Dynamics, 36(12): 1763-1783. https://doi.org/10.1002/eqe.717 DOI: https://doi.org/10.1002/eqe.717
FEMA (2018). "Appendix C: PACT User Manual". Page C1-C48 in Seismic Performance Assessment of Buildings Volume 2 - Implementation Guide. Editors: AT Council, Federal Emergency Management Agency, Washington, D.C., USA. https://femap58.atcouncil.org/documents/fema-p-58/25-fema-p-58-volume-2-implementation-second-edition/file
FEMA (2018). "Seismic Performance Assessment of Buildings Volume 1 - Methodology". 2nd ed., Federal Emergency Management Agency, Washington, D.C., USA, 340pp. https://femap58.atcouncil.org/documents/fema-p-58/24-fema-p-58-volume-1-methodology-second-edition/file
Moehle J and Deierlein GG (2004). "A framework methodology for performance-based earthquake engineering". 13th World Conference on Earthquake Engineering, 1-6 August, Vancouver, B.C., Canada, Paper No 679, 13pp. https://www.iitk.ac.in/nicee/wcee/article/13_679.pdf
Velez CG (2016). "Seismic Vulnerability Assessment of Reinforced Concrete Shear Walls in Christchurch, New Zealand". Master Thesis, School of Architecture, Civil and Environmental Engineering (ENAC), EPFL, Lausanne, Switzerland, 177pp.
Grammatikou S, Biskinis D and Fardis MN (2015). "Strength, deformation capacity and failure modes of RC walls under cyclic loading". Bulletin of Earthquake Engineering, 13(11): 3277-3300. https://doi.org/10.1007/s10518-015-9762-x DOI: https://doi.org/10.1007/s10518-015-9762-x
Sullivan TJ, Priestley MJN and Calvi GM (2012). "A Model Code for the Displacement-Based Seismic Design of Structures (DBD12)". ISBN 978-88-6198-072-3, IUSS Press, Pavia, Italy, 105pp.
Berry MP, Lehman DE and Lowes LN (2008). "Lumped-plasticity models for performance simulation of bridge columns". ACI Structural Journal, 105(3): 270-279. https://doi.org/10.14359/19786 DOI: https://doi.org/10.14359/19786
Cordero M, Fox MJ and Sullivan TJ (2015). "Assessing simplified expressions for the deformation capacity of RC walls". Tenth Pacific Conference on Earthquake Engineering, 6-8 November, Sydney, Australia, Paper No 10, 8pp. https://aees.org.au/wp-content/uploads/2015/12/Paper_10.pdf
Sullivan TJ, Fox MJ, Goebbels S and Keen J (2021). "Repair Methods and Costs for Earthquake-damaged Building Components in New Zealand". Designsafe-CI. https://doi.org/10.17603/ds2-c9kw-n302
Elwood KJ, Marquis F and Kim JH (2015). "Post-earthquake assessment and repairability of RC buildings: lessons from Canterbury and emerging challenges". Tenth Pacific Conference on Earthquake Engineering, 6-8 November, Sydney, Australia, Paper No 218, 9pp. https://aees.org.au/wp-content/uploads/2015/12/Paper_218.pdf
Dhakal RP, Macrae GA, Pourali A and Paganotti G (2016). "Seismic fragility of suspended ceiling systems used in NZ based on component tests". Bulletin of the New Zealand Society for Earthquake Engineering, 49(1): 45-63. https://doi.org/10.5459/bnzsee.49.1.45-63 DOI: https://doi.org/10.5459/bnzsee.49.1.45-63
Williamson MB, John L and Sullivan TJ (2022). "Assessing the impact of acceleration-sensitive components on the seismic losses of multi-storey office buildings". NZSEE 2022 Annual Conference, 27-29 April, Virtual Conference, Paper No 80, 10pp.
