Performance of ceilings in the February 2011 Christchurch earthquake
This paper describes the performance of (or damage to) ceilings in buildings during the 22nd February 2011 Christchurch earthquake and the subsequent aftershocks. In buildings that suffered severe structural damage, ceilings and other non-structural components (rather expectedly) failed, but even in buildings with little damage to their structural systems, ceilings were found to be severely damaged. The extent of ceiling damage, where the ceilings were subject to severe shaking, depended on the type of the ceiling system, the size and weight of the ceilings and the interaction of ceilings with other elements. The varieties and extent of observed ceiling damage are discussed in this paper with the help of photographs taken after the earthquake.
Taghavi, S. and Miranda, E. (2003) Response Assessment of Non-structural Building Elements. Report No. 2003/05. Pacific Earthquake Engineering Research Center, Richmond, CA.
Bradley, B.A., Dhakal, R.P., Cubrinovski, M. and MacRae G.A. (2009) “Seismic loss estimation for efficient decision making”. Bulletin of the New Zealand Society of Earthquake Engineering, Vol. 42, No. 2, pp. 96-110. DOI: https://doi.org/10.5459/bnzsee.42.2.96-110
Carr, A.J. (2011) Inelastic Response Spectra for the Christchurch Earthquake Records. Report to the Canterbury Earthquakes Royal Commission, 98 pages, http://canterbury.royalcommission.govt.nz/Technical-Reports (assessed 22 September 2011).
AS/NZS 2785 (2000) Suspended Ceiling – Design and Installation. Standards New Zealand, Wellington.
Rondo Key-Lock (2009) Concealed Suspended Ceiling Systems, Auckland, New Zealand.
Dhakal, R.P. (2010) “Damage to Non-Structural Components and Contents in 2010 Darfield Earthquake”. Bulletin of the New Zealand Society of Earthquake Engineering, Vol. 43, No. 4, pp. 404-411. DOI: https://doi.org/10.5459/bnzsee.43.4.404-411
MacRae, G.A., Hair, J. and Dhakal, R.P. (2011). “Ceiling damage in the 2010 Canterbury earthquake”. Eighth International Conference on Urban Earthquake Engineering (8CUEE), 6-7 March, Tokyo, 5 pages.
Paganotti, G., MacRae, G.A. and Dhakal, R.P. (2011). “Development of typical NZ ceiling system seismic fragilities”. Ninth Pacific Conference on Earthquake Engineering (PCEE), 14-16 April, Auckland, 8 pages.