Dynamics characteristics of geometrically nonlinear isolation systems for seismic protection of equipment

2021 ◽  
Author(s):  
Ting‐Wei Hsu ◽  
Chia‐Ming Chang
Keyword(s):  
Seismic Protection ◽  
Geometrically Nonlinear ◽  
Isolation Systems ◽  
Nonlinear Isolation

Analyses of Seismic Isolation Systems in Kyrgyzstan

2002 ◽  
Author(s):  
Tynymbek O. Ormonbekov ◽  
Ulugbek T. Begaliev
Keyword(s):  
Active Zone ◽  
Seismic Isolation ◽  
Seismic Protection ◽  
Kyrgyz Republic ◽  
Isolation Systems ◽  
Seismic Isolation Systems

The purpose of the present work is the analysis of existing methods of seismoisolation in the Kyrgyz Republic at which 95% of territory has seismically active zone with intensity 8, 9 and more. Also an opportunity of application of system seismic protection as rubber-metal bearings.

scholarly journals A procedure to model and design elastomeric‐based isolation systems for the seismic protection of rocking art objects

2021 ◽  
Author(s):  
Davide Pellecchia ◽  
Stefania Lo Feudo ◽  
Nicolò Vaiana ◽  
Jean‐Luc Dion ◽  
Luciano Rosati
Keyword(s):  
Seismic Protection ◽  
Art Objects ◽  
Isolation Systems

scholarly journals Teaching-Learning Based Optimization of Nonlinear Isolation Systems under Far Fault Earthquakes

Teknik Dergi ◽  
2022 ◽  
Author(s):  
Seda ÖNCÜ-DAVAS ◽  
Rasim TEMÜR ◽  
Cenk ALHAN
Keyword(s):  
Teaching Learning Based Optimization ◽  
Isolation Systems ◽  
Teaching Learning ◽  
Far Fault ◽  
Nonlinear Isolation

scholarly journals Análisis no lineal de la estructura del Hospital Darío Machuca Palacios del cantón La Troncal en Ecuador

2018 ◽  
Vol 3 (1) ◽  
pp. 292
Author(s):  
Francisco Xavier Calle Guaraca ◽  
Bernardo Andrés Feijoo Guevara ◽  
Ing. José Fernando Vásquez Calero, M.Sc
Keyword(s):  
Dynamic Analysis ◽  
Nonlinear Dynamic ◽  
Seismic Isolation ◽  
Nonlinear Dynamic Analysis ◽  
Seismic Protection ◽  
Isolation Systems ◽  
Seismic Isolation Systems

The hospital "Darío Machuca Palacios" is located in La Troncal (Cañar-Ecuador). In the nonlinear dynamic analysis of this hospital was determined inconsistencies in its design, such as non-compliance with maximum permissible drifts established by the Ecuadorian Construction Standard (NEC, as per its Spanish acronym), demonstrating vulnerability and possible collapse of the hospital. Considering that it is an essential building according to the NEC of seismic danger, it needs to be maintained in correct post-earthquake operation. For this reason the behavior of the structure with seismic isolation systems at their base was simulated, offering results that analyzed in depth could determine that this measure of seismic protection is adequate.Keywords: nonlinear dynamic analysis, essential building, seismic isolation systems.

Increasing the seismic resistance of operated buildings using special seismic protection methods

2021 ◽  
pp. 41-48
Author(s):  
Tatiana A. Belash ◽  
Elizaveta D. Erokhina
Keyword(s):  
Seismic Isolation ◽  
Computational Study ◽  
Active Regions ◽  
Seismic Protection ◽  
Seismic Resistance ◽  
Building Structures ◽  
Metal Supports ◽  
Isolation Systems ◽  
Seismic Isolation Systems

The change in the level of seismicity of buildings and structures occurs as a result of updating the maps of general seismic zoning. Ensuring the seismic resistance of buildings and structures is a factor that must be taken into account, especially during construction in seismically active regions. Nowadays, one of the main approaches to increasing seismic resistance is the use of various seismic isolation systems. It is not always profitable and rational to increase the seismic resistance of building structures or foundations for equipment by simply increasing the strength. A classification of seismic reinforcement systems is given, among which the most sparing are special methods of seismic protection in the form of seismic isolation. Practical examples of the use of seismic isolation systems to improve the seismic resistance of existing buildings are given. A computational study was carried out, the result of which showed the effectiveness of using rubber-metal supports for hanging the seismic resistance of buildings.

SEISMIC PROTECTION OF LIGHT SECONDARY SYSTEMS THROUGH DIFFERENT BASE ISOLATION SYSTEMS

2003 ◽  
Vol 7 (2) ◽  
pp. 223-250 ◽  
Author(s):  
MAURO DOLCE ◽  
DONATELLO CARDONE
Keyword(s):  
Base Isolation ◽  
Seismic Protection ◽  
Secondary Systems ◽  
Isolation Systems

On the Effectiveness of Two Isolation Systems for the Seismic Protection of Elevated Tanks

2015 ◽  
Vol 137 (3) ◽  
Author(s):  
Fabrizio Paolacci
Keyword(s):  
Time History ◽  
Seismic Protection ◽  
Base Shear ◽  
Lumped Mass ◽  
High Damping Rubber Bearings ◽  
Elevated Tanks ◽  
High Damping Rubber ◽  
Isolation Systems ◽  
The Stability ◽  
Rubber Bearings

This paper deals with the effectiveness of two isolation systems for the seismic protection of elevated steel storage tanks. In particular, the performance of high damping rubber bearings (HDRB) and friction pendulum isolators (FPS) has been analyzed. As case study, an emblematic example of elevated tanks collapsed during the Koaceli Earthquake in 1999 at Habas pharmaceutics plant in Turkey is considered. A time-history analysis conducted using lumped mass models demonstrates the high demand in terms of base shear required to the support columns and their inevitable collapse due to the insufficient shear strength. A proper design of HDRB and FPS isolator according to the EN1998 and a complete nonlinear analysis of the isolated tanks proved the high effectiveness of both isolation systems in reducing the response of the case tank. Actually, the stability conditions imposed by the code and a reduced level of convective base shear obtained with the second isolation typology suggests the use of FPS isolators rather than HDRB devices.

Seismic protection of unreinforced masonry buildings by means of low cost elastomeric isolation systems

2021 ◽  
Vol 6 (2) ◽  
pp. 127
Author(s):  
Ahmad Basshofi Habieb ◽  
Gabriele Milani ◽  
N.A. Tavio ◽  
Federico Milani
Keyword(s):  
Low Cost ◽  
Unreinforced Masonry ◽  
Seismic Protection ◽  
Masonry Buildings ◽  
Isolation Systems
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