000019247 001__ 19247
000019247 005__ 20170118182306.0
000019247 04107 $$aeng
000019247 046__ $$k2017-01-09
000019247 100__ $$aDhakal, Rajesh
000019247 24500 $$aFully-Floating Suspended Ceiling System: Experimental Evaluation of the Effect of Mass and Elastic Isolation

000019247 24630 $$n16.$$pProceedings of the 16th World Conference on Earthquake Engineering
000019247 260__ $$b
000019247 506__ $$arestricted
000019247 520__ $$2eng$$aThis paper reports a full scale shake table testing of a fully-floating ceiling within a steel frame. The 2.15 m by 4.55 m ceiling is suspended from the floor above by vertical steel wires. A gap of 150mm is provided on all four sides of the ceiling. In the tests, ceilings of different masses were used with the surrounding gap packed with elastic acoustic isolation material. The frame is subjected to sinusoidal motions, and random table motions consisting of a range of frequencies and amplitudes. A satisfactory agreement between the fully floating ceiling response and simple pendulum theory was demonstrated with low acceleration and displacement response in the ceiling grid and tiles at excitation frequencies far from the ceiling’s natural frequency of vibration. However, when subjected to input motions with frequencies close to the resonant frequency, the horizontal displacement of the ceiling exceeded the gap width resulting in large acceleration pulses due to the pounding action with the surrounding structure. The addition of an elastic perimeter isolation material was effective in decreasing the pounding impact and reducing the ceiling displacements and accelerations. The response of the test specimens was compared with the code requirements with respect to clearances. This comparison showed that the tested fully-floating ceiling had reduced ceiling displacements and accelerations as a result of the used ceiling isolation material. The only form of damage observed was a single panel dislodgement in one test.

000019247 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000019247 653__ $$afrequency content, fully-floating ceiling, pounding, seismic response, shake table tests, perimeter isolation.

000019247 7112_ $$a16th World Conference on Earthquake Engineering$$cSantiago (CL)$$d2017-01-09 / 2017-01-13$$gWCEE16
000019247 720__ $$aDhakal, Rajesh$$iMacrae, Gregory$$iTasligedik, Sahin$$iPourali, Atefeh
000019247 8560_ $$ffischerc@itam.cas.cz
000019247 8564_ $$s1005830$$uhttps://invenio.itam.cas.cz/record/19247/files/32.pdf$$yOriginal version of the author's contribution as presented on USB, paper 32.
000019247 962__ $$r16048
000019247 980__ $$aPAPER