000010930 001__ 10930
000010930 005__ 20141205155818.0
000010930 04107 $$aeng
000010930 046__ $$k2008-10-12
000010930 100__ $$aMazza, Fabio
000010930 24500 $$aEffects of Horizontal and Vertical Near-Fault Ground Motions on the Nonlinear Dynamic Response Of RC Buildings with Different Base-Isolation Systems

000010930 24630 $$n14.$$pProceedings of the 14th World Conference on Earthquake Engineering
000010930 260__ $$b
000010930 506__ $$arestricted
000010930 520__ $$2eng$$aNear-fault ground motions are characterized by long-duration horizontal pulses and high peak values of vertical acceleration, which can become critical for a base-isolated structure. The objective of this work is to study effectiveness and limitations of base-isolation systems obtained considering High-Damping-Laminated-Rubber Bearings (HDLRBs) acting alone or either in parallel or in series with steel-PTFE sliding bearings. A numerical investigation is carried out with reference to base-isolated five-storey reinforced concrete buildings designed according to the European seismic code (Eurocode 8). The design of the base-isolated test structures (in case of HDLRBs only) is carried out in a high-risk seismic region considering the horizontal seismic loads acting in combination with the vertical ones and assuming different values of the ratio between horizontal stiffness and vertical stiffness of the HDLRBs. The behaviour of the frame members is simulated by a bilinear law, checking plastic conditions at potential critical sections. A viscoelastic model with variable stiffness properties in the horizontal and vertical directions, depending on the axial force and lateral deformation, simulates the response of a HDLRB. A rigid-plastic (with friction variability) law is assumed to simulate the behaviour of a steel-PTFE sliding bearing. The nonlinear dynamic behaviour of the test structures is studied under near-fault earthquakes.

000010930 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000010930 653__ $$abase-isolated building, base isolation, elastomeric bearing, sliding bearing, nonlinear seismic analysis, near-fault earthquake

000010930 7112_ $$a14th World Conference on Earthquake Engineering$$cBejing (CN)$$d2008-10-12 / 2008-10-17$$gWCEE15
000010930 720__ $$aMazza, Fabio$$iVulcano, Alfonso
000010930 8560_ $$ffischerc@itam.cas.cz
000010930 8564_ $$s325491$$uhttps://invenio.itam.cas.cz/record/10930/files/11-0030.pdf$$yOriginal version of the author's contribution as presented on CD, Paper ID: 11-0030.
000010930 962__ $$r9324
000010930 980__ $$aPAPER