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

2019 ◽  
Author(s):  
A.D. Abakarov ◽  
G.M. Murtazaliev ◽  
Kh.M. Omarov ◽  
Kh.R. Zainulabidova ◽  
Iu.A. Alkhasova ◽  
...  
Keyword(s):  
Seismic Isolation ◽  
Seismic Effect ◽  
Metal Supports ◽  
Residual Deformations ◽  
Isolation Systems ◽  
Seismic Isolation Systems

The Seismic Response Investigation on the Multi-Storey Buildings with Seismically Insulating Rubber-Metal Supports

2018 ◽  
Vol 931 ◽  
pp. 362-367
Author(s):  
Khadjimurad M. Omarov ◽  
Abakar D. Abakarov
Keyword(s):  
Differential Equations ◽  
Random Process ◽  
Seismic Response ◽  
Seismic Isolation ◽  
Seismic Action ◽  
System Of Differential Equations ◽  
Metal Supports ◽  
Isolation Systems ◽  
Seismic Isolation Systems ◽  
Storey Building

The buildings of various constructive solutions with seismic isolation and without seismic isolation are considered. The system of differential equations of a multi-storey building motion with seismic isolating rubber-metal supports is presented. The graphs of the seismic response of 5, 9 and 12-storey buildings with seismic insulating rubber-metal bearings are obtained as well as with seismic action in the form of the unsteady random process. The effectiveness of seismic isolation systems with rubber-metal bearings with lead core and without it is estimated.

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.

Damping Optimization in Seismic Isolation Systems

2019 ◽  
Vol 828 ◽  
pp. 129-135
Author(s):  
Yuri L. Rutman ◽  
Nadezhda V. Ostrovskaya
Keyword(s):  
Seismic Risk ◽  
Seismic Isolation ◽  
Variable Parameter ◽  
Seismic Effect ◽  
Optimization Criterion ◽  
Damping Coefficient ◽  
Design Parameters ◽  
Elastic Plastic ◽  
Isolation Systems ◽  
Seismic Isolation Systems

To protect civil buildings, industrial facilities and bridges against earthquakes and explosions, various seismic isolation systems (SIS) are used. SISs always include dissipative elements that dissipate energy transmitted to the protected object (PO) during seismic effect, operation of which is based on the elastic-plastic deformation of special structures — elastic-plastic dampers (PD). The paper proposes a method for selecting the optimum design parameters of elastic-plastic dampers in SISs. The problem is solved upon specifying an ensemble of random seismic effects. A suite of artificial accelerograms obtained by statistical modeling is used as a stream of events supplied to the right side of motion equations. Dispersion of PO absolute accelerations was chosen as an optimization criterion. After linearization of the model, the dimensionless damping coefficient introduced into the dynamic model according to the Voigt–Bock hypothesis was taken as a variable parameter. Relationship between the selected optimization criterion and the theory of seismic risk of V.V. Bolotin has been established. It is shown that optimization of the damping coefficient reduces the seismic risk by 1.5–1.8 times. A method has been developed for transition from the optimum damping coefficient to design parameters of elastic-plastic dampers that implement this coefficient. Analytical dependences have been obtained enabling to set those parameters easily.

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.

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