期刊
EARTHQUAKE ENGINEERING AND ENGINEERING VIBRATION
卷 15, 期 2, 页码 239-249出版社
SPRINGER
DOI: 10.1007/s11803-016-0319-z
关键词
suspended ceiling; Lushan earthquake; Wenchuan earthquake; shake table test; wall closure; acoustic mineral fiber panel
资金
- research fund for earthquake engineering of China Earthquake Administration [201508023]
- project of the National Science & Technology Support Program during the Twelfth Five-year Plan Period of China [2015BAK17B03]
- general program of National Natural Science Foundation of China [51578515]
Severe damage to suspended ceilings of metal grids and lay-in panels was observed in public buildings during the 2013 M (s)7.0 Lushan earthquake in China. Over the past several years, suspended ceilings have been widely used practice in public buildings throughout China, including government offices, schools and hospitals. To investigate the damage mechanism of suspended ceilings, a series of three-dimensional shake table tests was conducted to reproduce the observed damage. A full-scale reinforced concrete frame was constructed as the testing frame for the ceiling, which was single-story and infilled with brick masonry walls to represent the local construction of low-rise buildings. In general, the ceiling in the tests exhibited similar damage phenomena as the field observations, such as higher vulnerability of perimeter elements and extensive damage to the cross runners. However, it exhibited lower fragility in terms of peak ground/roof accelerations at the initiation of damage. Further investigations are needed to clarify the reasons for this behavior.
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