Numerical simulation of the seismic behaviour of a multi-storey steel building, both fixed-base and base-isolated, under the 1940 El Centro earthquake was performed in this paper. The analyzed 4-storey building was decoupled from the shaking ground with the Polymeric Bearings, which can be considered a proposal of a new seismic isolation system. It consists of rectangular-shaped blocks made of a specially prepared flexible polymeric material whose chemical composition includes certain additives so as to improve its damping potential. The basic mechanical properties of this material have been already determined in experimental studies and the results have been presented in previous publications. Moreover, shaking table experimental study, using the prototype of the Polymeric Bearings supporting a 1.20 m high single-storey and a 2.30 m high two-storey steel structure models, was also performed and the results have proven the effectiveness of this base isolation system in suppressing structural vibrations during dynamic. The 5-parameter Mooney-Rivlin material was adopted to simulate the behaviour of seismic isolation bearings. This hyperelastic model provided the best fit with the previously obtained experimental results.
Authors
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2014
