[논문]Seismic interactions between suspended ceilings and nonstructural partition walls

Huang, Wen-Chun; McClure, Ghyslaine; Hussainzada, Nahidah

doi:10.12989/csm.2013.2.4.329

Seismic interactions between suspended ceilings and nonstructural partition walls

Coupled systems mechanics, v.2 no.4, 2013년, pp.329 - 348

Huang, Wen-Chun (Department of Civil Engineering and Applied Mechanics, McGill University) , McClure, Ghyslaine (Department of Civil Engineering and Applied Mechanics, McGill University) , Hussainzada, Nahidah (Department of Civil Engineering and Applied Mechanics, McGill University)

Abstract ▼ AI-Helper

This study aims at observing the coupling behaviours between suspended ceilings and partition walls in terms of their global seismic performance using full-scale shake table tests. The suspended ceilings with planar dimensions of $6.0m{\times}3.6m$ were tested with two types of panels: acoustic lay-in and metal clip-on panels. They were further categorized as seismic-braced, seismic-unbraced, and non-seismic installations. Also, two configurations of 2.7 m high partition wall specimens, with C-shape and I-shape in the plane layouts, were tested. In total, seven ceiling-partition-coupling (CPC) specimens were tested utilizing a unidirectional seismic simulator. The test results indicate that the damage patterns of the tested CPC systems included failure of the ceiling grids, shearing-off of the wall top railing, and, most destructively, numerous partial detachments and falling of the ceiling panels. The loss of panels was mostly concentrated near the center of the tested partition wall. The testing results also confirmed that the failure mode of the non-seismic CPC systems was brittle: The whole system would collapse suddenly all at once when the magnitude of the inputs hit the capacity threshold, rather than displaying progressive damage. Overall, the seismic capacity of the unbraced and braced CPC systems could be up to 1.23 g and 2.67 g, respectively; these accelerations were both achieved at the base of the partition wall. Nonetheless, for practical applications, it is noteworthy that the three-dimensional nature of seismic excitations and the size effect of the ceiling area are parameters that exacerbate the CPC's seismic response so that their actual capacity may be dramatically decreased, leading to important losses even in moderate seismic events.

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참고문헌 (24)

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Seismic interactions between suspended ceilings and nonstructural partition walls

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Seismic interactions between suspended ceilings and nonstructural partition walls

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