Title: Innovative seismic protection system for multistory buildings using floating slabs
Authors: Charalampakis AE, Tsiatas GC, Tsopelas P.
Type: Conference paper
Conference: 4th Panhellenic Congress on Seismic Engineering and Engineering Seismology
Venue: Athens, Greece
Date: 2019
Language: English

[abstract]

The use of floating slabs, i.e. slabs that have been seismically isolated from the skeleton of the structure, as structural control system is investigated herein. Depending on their period, the purpose of these slabs is twofold; on one hand they act as mass-damping system for the overall response of the structure and on the other hand they provide seismic isolation to their contents. The analyses are based on several case studies with different combinations of floating/normal slabs along the height of the structure, as well as seismic isolation characteristics. The performance of each structural configuration is tested under an artificial seismic motion, generated using the SIMQKE-II software [1] and matching a particular EC8 response spectrum. The numerical results confirm that for isolation periods close to the fundamental eigenperiod of the structure, the floating slabs act as tuned mass dampers (TMD), with the additional advantage of the larger mass. For large isolation periods (~1.5s or more), the floating slab system reduces the effective seismic mass of the structure, again having a beneficial effect regarding its response.

[cite as]

Charalampakis AE, Tsiatas GC, Tsopelas P. Innovative seismic protection system for multistory buildings using floating slabs. Proc. 4th Panhellenic Congress on Seismic Engineering and Engineering Seismology, Athens, Greece; 2019.

[ paper]