scholarly journals Seismic resistance increase of operated buildings using special seismic protection devices

2019 ◽  
Vol 698 ◽  
pp. 022056
Author(s):  
T A Belash ◽  
G A Bogdanova
Keyword(s):  
Seismic Protection ◽  
Seismic Resistance ◽  
Resistance Increase ◽  
Protection Devices

scholarly journals Comparison of Novel Seismic Protection Devices to Attenuate the Earthquake Induced Energy

Actuators ◽  
2021 ◽  
Vol 10 (4) ◽  
pp. 73
Author(s):  
Osman Hansu ◽  
Esra Mete Güneyisi
Keyword(s):  
Lateral Displacement ◽  
Time History ◽  
Seismic Protection ◽  
Base Shear ◽  
Seismic Demands ◽  
Nonlinear Time History Analyses ◽  
History Of ◽  
Protection Devices ◽  
Nonlinear Time History ◽  
Better Than

This study addresses an alternative use of viscous dampers (VDs) associated with buckling restrained braces (BRBs) as innovative seismic protection devices. For this purpose, 4-, 8- and 12-story steel bare frames were designed with 6.5 m equal span length and 4 m story height. Thereafter, they were seismically improved by mounting the VDs and BRBs in three patterns, namely outer bays, inner bays, and all bays over the frame heights. The structures were modeled using SAP 2000 software and evaluated by the nonlinear time history analyses subjected to the six natural ground motions. The seismic responses of the structures were investigated for the lateral displacement, interstory drift, absolute acceleration, maximum base shear, and time history of roof displacement. The results clearly indicated that the VDs and BRBs reduced seismic demands significantly compared to the bare frame. Moreover, the all-bay pattern performed better than the others.

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.

scholarly journals Seismic behavior of chilean bridges with seismic protection devices

2015 ◽  
Vol 14 (1) ◽  
pp. 53-59 ◽  
Author(s):  
María O Moroni ◽  
Mauricio Sarrazin ◽  
Braian Venegas ◽  
Jorge Villarroel
Keyword(s):  
Seismic Behavior ◽  
Seismic Protection ◽  
Protection Devices

Effectiveness Evaluation of Seismic Protection Devices for Bridges in the PBEE Framework

2014 ◽  
Author(s):  
Paolo Emidio Sebastiani ◽  
Jamie E. Padgett ◽  
Francesco Petrini ◽  
Franco Bontempi
Keyword(s):  
Seismic Protection ◽  
Effectiveness Evaluation ◽  
Protection Devices

scholarly journals General classification of seismic protection systems of buildings and structures

2020 ◽  
pp. 3-12
Author(s):  
Viktor Bazhenov ◽  
Yurii Heraimovych
Keyword(s):  
Seismic Isolation ◽  
Human Life ◽  
Seismic Protection ◽  
Seismic Resistance ◽  
Practical Calculation ◽  
Combined System ◽  
Strong Earthquakes ◽  
General Classification ◽  
Protection Systems

The issues of ensuring the seismic resistance of buildings and structures hold a leading position despite significant achievements in this area. This is confirmed by the significant loss of human life and destruction caused by strong earthquakes. According to the principle of operation (properties of ensuring seismic resistance), all seismic protection systems can be conditionally divided into three groups: traditional, special and combined. Traditional methods of seismic protection of buildings and structures are mainly associated with reducing the mass of structures, increasing their strength and stiffness characteristics, as well as with the choice of rational planning and design solutions. The second group of seismic protection includes approaches associated with reducing the intensity of seismic loads on buildings and structures. Special seismic protection today is one of the most promising areas in the field of earthquake-resistant construction. The largest subgroup of this seismic protection – this is a passive seismic protection aimed at changing the dynamic scheme of a buildings or structures, which, in turn, is divided into seismic isolation and seismic suppression. The combined system implies a combination of traditional and nontraditional seismic protection systems. The massive use of seismic protection systems by design engineers is constrained by the lack of practical calculation methods. This is due to the fact that most seismic protection systems are characterized by a nonlinear deformation diagram, which does not allow the use of the standard linear-spectral methodology for the calculation. This article clarifies the general classification of seismic protection systems of buildings and structures. The use of seismic protection systems during strong earthquakes can significantly reduce the amplitude of vibrations, provide less damage to buildings and structures. Seismic protection systems are one of the most effective ways to increase the level of seismic resistance of buildings and structures, although the share of seismic-protected buildings in construction in relation to traditional ones is still very small.

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