Research of Residual Deformations of Seismic Isolation Systems with Rubber-Metal Supports with Lead Core Under Seismic Effect

DOI

10.2991/isees-19.2019.1How to use a DOI?

Keywords

structures; rubber support with a lead core; seismic effects; residual deformations.

Abstract

The influence of the type of constructive system of buildings, their number of floors, as well as the parameters of seismic impact on the residual deformations of seismic insulating rubber-metal supports with lead core installed at the level of the top of foundations is investigated. By constructive solution, the structures are divided into frame, wall and frame-wall. Floors are taken equal to 5, 9 and 12. Seismoisolating rubber metal supports with a lead core are classified into flexible, semi-rigid and rigid. The characteristics of rubber-metal supports offered by the Italian company "FIN INDASTPIALE" are taken as the basis. The seismic impact is modeled on a computer in the form of a non-stationary random process with an intensity of 9 points and a duration of 20 seconds. The predominant period of soil oscillations under seismic effects is assumed to vary from 0.1 s to 2.0 s. Considering that in the considered structures the center of masses and the center of rigidity coincide in the plan, and their overlaps are hard disks, the calculated models of the structures are taken as a multi-mass cantilever rod, where the lower mass is located at the top of the rubber-metal supports. The "Force-displacement" dependence characteristic of rubber-metal supports with a lead core is approximated in the form of a bilinear elastic-plastic dependence. The original system of differential equations of oscillations is integrated on a computer by a numerical method. The maximum residual deformations in rubber-metal supports with a lead core under seismic effects with prevailing periods of soil oscillations varying from 0.1 s are determined. up to 2.0 s. in increments of 0.1 s. At the same time, the maximum acceleration of ground motion is assumed to be 400 cm/s2. The analysis of the obtained results was carried out and the areas of effective use of rubber-metal supports of different stiffness with a lead core in the structures of the frame, wall and frame-wall structural systems were determined.

Copyright

© 2019, the Authors. Published by Atlantis Press.

Open Access

This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).

Download article (PDF)

TY  - CONF
AU  - A.D. Abakarov
AU  - G.M. Murtazaliev
AU  - Kh.M. Omarov
AU  - Kh.R. Zainulabidova
AU  - Iu.A. Alkhasova
PY  - 2019/08
DA  - 2019/08
TI  - Research of Residual Deformations of Seismic Isolation Systems with Rubber-Metal Supports with Lead Core Under Seismic Effect
BT  - Proceedings of the International Symposium "Engineering and Earth Sciences: Applied and Fundamental Research" dedicated to the 85th anniversary of H.I. Ibragimov (ISEES 2019)
PB  - Atlantis Press
SP  - 824
EP  - 827
SN  - 2590-3217
UR  - https://doi.org/10.2991/isees-19.2019.1
DO  - 10.2991/isees-19.2019.1
ID  - Abakarov2019/08
ER  -