Influence of Earthquake Parameters on the Bi-directional Behavior of Base Isolation Systems

Abed, Dana; Thawabteh, Jafar Al; Alzubi, Yazan; Assbeihat, Jamal; Al-Sahawneh, Eid

doi:10.28991/cej-2022-08-10-02

Cited by 3 publications

(1 citation statement)

References 31 publications

(34 reference statements)

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“…In this context, the displacement of isolators can be controlled by adding supplemental damping to the isolation systems. An example is the use of friction in base isolation systems by Abed et al [139] to reduce structural response and enhance energy dissipation under lateral loads. They mentioned that these systems should be studied under bidirectional loading since further research and study is required before these systems can be implemented in practical applications in real life.…”

Section: Steel Ring Dampermentioning

confidence: 99%

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

Behnamfar¹,

Almohammad-albakkar²

2023

IJE

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Seismic excitation can cause significant energy to be released within structures. By using special devices, this energy can be consumed and dissipated without deforming structural members significantly. Due to this, structural damage is minimized, casualties are prevented during earthquakes, and structures are extended in their useful life. Over the past five decades, it has been widely acknowledged that steel yielding dampers are among the best energy dissipation devices. It has been stated that the hysteretic behavior of steel yielding dampers could vary slightly depending on their geometry. From a practical point of view, they are suitable for the improvement of seismic safety in new and existing structures. The purpose of this paper is to present a review related to steel yielding dampers, their development, various types, and applications, in order to help understand the role of these dampers in improving the seismic performance of structures. In terms of their shape, steel yielding dampers can be categorized as steel plate dampers, pipe dampers, curved dampers, and slit dampers. The most common use of steel plate, such as ADAS and TADAS, and pipe dampers is within braced frames, whereas U-shaped, Jshaped, and S-shaped dampers are mostly seen in frames with chevron bracing. Steel curved dampers with a 60° angle in a steel-braced frame, on the other hand, provide the best energy dissipation and frame strength. In this direction, until today, steel slit dampers have been found to be the most commonly used steel yielding dampers.

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Section: Steel Ring Dampermentioning

confidence: 99%

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

Behnamfar¹,

Almohammad-albakkar²

2023

IJE

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Comparative study on the effectiveness of fluid viscous dampers and base isolation: an approach toward enhancing seismic performance of composite structures

Thakur,

Tiwary

2023

Innov. Infrastruct. Solut.

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Advancing seismic performance: Isolators, TMDs, and multi-level strategies in reinforced concrete buildings

Jasim,

Al-Hussein

2024

Open Engineering

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This study evaluates seismic mitigation methods, including high damping rubber bearing, lead rubber bearing, double sliding pendulum (DSP), and tuned mass damper (TMD), considering earthquake intensity, building height, and isolation level. Moreover, the study delves into a novel approach that incorporates multi-level isolation and multi-level TMD. Reinforced concrete buildings, ranging in height from 4 to 40 storeys, were nalysed and nalysed using SAP2000 under the seismic influence of the Badra, El Centro, and Northridge earthquakes. The study reveals a significant rise in the fundamental period (T) with base isolation systems, reaching 378% of the fixed base value for a six-storey building. Building height directly affects T values, with simplified equations introduced for calculation. DSP proves 5% more efficient in reducing base shear (BS), while TMD is effective in weaker earthquakes for minimizing lateral displacement. Base isolators outperform mid-level isolation and TMD at the top storey. Combining base isolators with TMD at the top storey is deemed impractical and uneconomical. The study recommends multilevel isolation or multilevel TMD for enhanced seismic isolation efficiency, with four-level isolation achieving an 80% reduction in BS for 12-storey buildings. In addition, four-level TMD outperforms TMD at the top storey with a 44.5% reduction in BS, surpassing the 26.6% reduction achieved with TMD at the top storey only.

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Influence of Earthquake Parameters on the Bi-directional Behavior of Base Isolation Systems

Cited by 3 publications

References 31 publications

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

Development of Steel Yielding Seismic Dampers Used to Improve Seismic Performance of Structures: A Comprehensive Review

Comparative study on the effectiveness of fluid viscous dampers and base isolation: an approach toward enhancing seismic performance of composite structures

Advancing seismic performance: Isolators, TMDs, and multi-level strategies in reinforced concrete buildings

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