Seismic evaluation of two‐elevation ceiling system by shake table tests

Qi, Liangjie; Kurata, Masahiro; Ikeda, Yoshiki; Kunitomo, Keiichiro; Takaoka, Masashi

doi:10.1002/eqe.3390

Cited by 23 publications

(23 citation statements)

References 24 publications

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“…Experimental studies, most of which involved shake table tests, have focused on the effects of key parameters on the damage to suspended ceilings, such as peripheral boundary conditions, lateral constraints, joint enhancement, sizes, panel properties, loading directions, and the interaction with other nonstructural elements. [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] Numerical models of different levels of complexity were also developed to provide insight into the seismic behavior of suspended ceilings. 11,15,18,21,[24][25][26][27] Both the experimental and numerical results have led to a variety of seismic fragility models.…”

Section: Noveltymentioning

confidence: 99%

“…[9][10][11][12][13][14][15][16][17][18][19][20][21][22][23] Numerical models of different levels of complexity were also developed to provide insight into the seismic behavior of suspended ceilings. 11,15,18,21,[24][25][26][27] Both the experimental and numerical results have led to a variety of seismic fragility models. While the definitions of the damage measures and limit states could be very different, peak floor acceleration (PFA) has been predominantly used as an intensity measure for suspended ceilings.…”

Section: Noveltymentioning

confidence: 99%

“…Over the decades, researchers have conducted both experimental and numerical investigations to understand the seismic behavior and fragility of suspended ceilings. Experimental studies, most of which involved shake table tests, have focused on the effects of key parameters on the damage to suspended ceilings, such as peripheral boundary conditions, lateral constraints, joint enhancement, sizes, panel properties, loading directions, and the interaction with other nonstructural elements 9–23 . Numerical models of different levels of complexity were also developed to provide insight into the seismic behavior of suspended ceilings 11,15,18,21,24–27 .…”

Section: Introductionmentioning

confidence: 99%

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Frequency‐Sensitivity of the seismic damage to suspended ceilings

Feng

2023

Earthq Engng Struct Dyn

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Seismic damage to suspended ceilings was frequently reported even in minor to moderate earthquakes and caused problems to immediate occupancy and quick recovery of buildings. While peak floor acceleration (PFA) has been exclusively used as an intensity measure for suspended ceilings, this study introduces a shake table test on minimum subassemblies of suspended ceilings under sinusoidal excitation to critically assess the rationality of this practice. The test results show a significant frequency‐sensitivity of the ceiling damage that, depending on the dominant frequencies, an excitation of a lower PFA might cause much severer damage than that of a higher PFA. A numerical model that captures the nonlinear interaction of the individual components in a suspended ceiling, that is, the main and cross runners, ceiling panels, a hanger, and enclosure angles, is established and calibrated to simulate the frequency‐sensitive behavior observed in the shake table tests. The model is then extended for suspended ceilings of realistic dimensions. Three‐dimensional fragility spectra of suspended ceilings under sinusoidal excitations are proposed to relate the extent of seismic damage with not only the PFA but also the excitation frequency. Boundaries of damage limit states can be defined by taking two‐dimensional sections on the fragility spectra, based on which, the influence of key factors on ceiling damage characteristics is illustrated.

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Section: Noveltymentioning

confidence: 99%

Section: Noveltymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Frequency‐Sensitivity of the seismic damage to suspended ceilings

Feng

2023

Earthq Engng Struct Dyn

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“…Figure 15 shows the statistical parameters (maximum, minimum, and median) of the AAFs of the specimen. e median of the AAF is regarded as the representative value to compare with the code limit [30,31]. Most of the AAFs of B1 are larger than the code limit due to the violent collision at the ceiling perimeter while all AAFs of B2 are smaller than the code limit with the help of seismic clips.…”

Section: Acceleration Amplification Factormentioning

confidence: 99%

Study of Seismic Performance of Chinese‐Style Single‐Layer Suspended Ceiling System by Shaking Table Tests

Jiang

Wang

2021

Advances in Civil Engineering

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During some recent earthquakes, the suspended ceiling system (SCS) in buildings suffered severe damage. The seismic performance of SCS attracted more attention from researchers. In this study, full-scale shaking table tests on two Chinese-style single-layer SCSs with different boundary conditions are conducted. The seismic damage and earthquake responses, including acceleration, displacement, and strain responses, are compared. The effect of the boundary condition on the seismic performance of the SCS is studied. It is found that the seismic performance of the SCS is significantly affected by the boundary condition. Compared with the SCS with the free condition at the boundary, the damage to the SCS installed with seismic clips at the boundary is much slighter. Compared with the SCS with the free condition, the median of acceleration amplification factor (AAF), the peak displacement (PD), and maximum strain of the SCS installed with seismic clips are reduced by up to 63%, 99%, and 84%, respectively. At the end of the tests, the SCS with the free condition at the boundary completely collapsed with 68% of the panels falling, while only 15% of panels fell in the SCS installed with seismic clips. The seismic clips could avoid the falling of the grids from the peripheral support and ensure the integrity of the SCS. With the help of seismic clips installed at the boundary, the responses of the ceiling, such as acceleration, displacement, and strain, decrease significantly, and thereof, the collapse resistance capacity is improved.

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“…Dynamic testing also allows the assessment of the dynamic properties of the elements (e.g., dynamic identification). Shake table testing represents state‐of‐the‐art dynamic testing (Bianchi et al., 2021; Filiatrault et al., 2004; Ghith et al., 2019; Jun et al., 2020; Kim & Shin, 2021; Lee & Jung, 2020; Luo et al., 2021; Magliulo et al., 2014; Qi et al., 2021; Tian et al., 2015; T. Zhou et al., 2021).…”

Section: Introductionmentioning

confidence: 99%

A shake table protocol for seismic assessment and qualification of acceleration‐sensitive nonstructural elements

Zito

D’Angela

Maddaloni

et al. 2022

Computer aided Civil Eng

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A shake table protocol for seismic assessment and qualification of accelerationsensitive nonstructural elements (NEs) is developed. The paper critically reviews existing protocols and highlights their criticalities, pointing out the need for the development of novel assessment and qualification approaches and protocols. The protocol is developed in light of these criticalities, considering the most recent advances in the field and the specific expertise of the research team. The most significant and contributing parts of the developed protocol consist of the definition of novel required response spectra and the generation of signals for seismic performance evaluation tests. The reliability and robustness of the protocol are evidenced in the paper considering real-floor motions as a reference, also proving the superiority of the developed protocol with respect to the reference alternatives. The defined approach and procedures are generally applicable and easily extendable to different case studies, as the process is highly versatile and modifiable. The implementation of the developed approach and protocol in the literature and in practice will significantly enhance seismic assessment and qualification of acceleration-sensitive NEs. This will possibly have a strong impact on public safety and economy.

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Seismic evaluation of two‐elevation ceiling system by shake table tests

Cited by 23 publications

References 24 publications

Frequency‐Sensitivity of the seismic damage to suspended ceilings

Frequency‐Sensitivity of the seismic damage to suspended ceilings

Study of Seismic Performance of Chinese‐Style Single‐Layer Suspended Ceiling System by Shaking Table Tests

A shake table protocol for seismic assessment and qualification of acceleration‐sensitive nonstructural elements

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