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EXPERIMENTAL STUDY OF FPS SYSTEM IN BRIDGE SEISMIC ISOLATION
Author(s) -
TSOPELAS P.,
CONSTANTINOU M. C.,
KIM Y. S.,
OKAMOTO S.
Publication year - 1996
Publication title -
earthquake engineering and structural dynamics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 2.218
H-Index - 127
eISSN - 1096-9845
pISSN - 0098-8847
DOI - 10.1002/(sici)1096-9845(199601)25:1<65::aid-eqe536>3.0.co;2-a
Subject(s) - earthquake shaking table , bridge (graph theory) , structural engineering , seismic isolation , acceleration , deck , pendulum , bearing (navigation) , range (aeronautics) , engineering , explosive material , shake , geology , computer science , physics , aerospace engineering , mechanical engineering , medicine , chemistry , organic chemistry , classical mechanics , artificial intelligence
An experimental study of a seismically isolated and a comparable non‐isolated bridge is presented. The bridge model featured flexible piers, weighed 158kN and was tested on a shake table with an array of real and simulated seismic motions with peak acceleration in the range 0⋅1–1⋅1 g . When isolated, the bridge deck was supported by four spherically shaped sliding bearings (known as Friction Pendulum System or FPS bearings) with friction coefficient under dynamic conditions in the range 0⋅07–0⋅12. The experimental results demonstrated a substantial improvement in the ability of the isolated bridge to sustain all levels of seismic excitation under elastic conditions.