A State-of-the-Art Review of Passive Energy Dissipation Systems in Steel Braces

Titirla, Magdalini

doi:10.3390/buildings13040851

Cited by 20 publications

(15 citation statements)

References 159 publications

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“…Magdalini D. Titirla [14] focuses on passive energy dissipation systems and, more specifically, the dampers that can be positioned in steel braces to increase the absorption of seismic energy and to protect them from buckling.…”

Section: State-of-the-art and Innovative Contribution Of This Researchmentioning

confidence: 99%

Design of Additional Dissipative Structures for Seismic Retrofitting of Existing Buildings

Bergami

2024

Applied Sciences

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This paper presents an innovative approach for improving the seismic protection of existing structures by introducing an additional dissipative structure (ADS). The seismic energy impacting the building can be dissipated through the contribution provided by the ADS, thereby reducing the need for the existing building to ensure its seismic capacity. This retrofitting technique is well-suited for structures facing architectural restrictions or challenging-to-update elements. It can help to address foundational issues by applying loads to new external components. This paper describes the design of the ADS and proposes a displacement-based design procedure. The design process involves a nonlinear static analysis and a simple procedure that must be iteratively repeated until the retrofitting target is achieved. This approach is simple and computationally efficient and can also be used for complex and irregular structures. Such structures are frequently encountered, and existing structures often exhibit unusual geometries and materials requiring extensive numerical modeling. The efficacy of this technique was evaluated using the case study of a school building located in central Italy. The results of numerical analyses indicated that owing to the ADS’s contribution, the seismic capacity of both buildings was enhanced, addressing the challenges associated with complex foundational interventions.

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Section: State-of-the-art and Innovative Contribution Of This Researchmentioning

confidence: 99%

Design of Additional Dissipative Structures for Seismic Retrofitting of Existing Buildings

Bergami

2024

Applied Sciences

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“…To address these limitations and provide a novel alternative solution, this study proposes a novel seismic protection system for structures involving a parallel arrangement of fluid viscous dampers and high-damping rubber bearings, a combination that has not been previously reported or explored in the literature. Fluid viscous dampers are utilized for their ability to dissipate energy via viscous fluid flow, while high-damping rubber bearings are incorporated for their notable advantages over other base isolation methods, including high damping capacity, a broad frequency range, design flexibility, and excellent integration capabilities [40,41].…”

Section: Dampers Advantages Disadvantagesmentioning

confidence: 99%

Enhancing the Seismic Response of Residential RC Buildings with an Innovative Base Isolation Technique

et al. 2023

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The prediction of the magnitude and impact of forthcoming earthquakes remains an elusive challenge in the field of science. Consequently, extensive research efforts have been directed toward the development of earthquake-resistant design strategies aimed at mitigating building vibrations. This study focuses on the efficacy of fluid viscous dampers (FVDs) in augmenting the seismic response of a low-rise residential reinforced-concrete building, which is base-isolated, using high–damping rubber bearings (HDRBs). The structural analysis employs a non-linear approach, employing ETABS v16 software for building modeling and conducting non-linear dynamic analysis using artificial accelerograms specific to Algeria. Three distinct connection configurations to the building’s base are investigated: (1) a fixed-base structure; (2) a structure isolated by HDRBs; and (3) a structure isolated utilizing a novel parallel arrangement of HDRBs in conjunction with FVDs. Comparative evaluation of these configurations reveals noteworthy findings; the results demonstrate that the base isolation system, comprising HDRBs and FVDs, significantly diminishes the base shear force by over 80% and reduces acceleration by 54% while concurrently increasing displacement by 47%. These findings underscore the effectiveness of incorporating FVDs in conjunction with HDRBs as a means to enhance the seismic response of reinforced concrete buildings. This study showcases the potential of such structural analyses to contribute to the development of earthquake-resistant design approaches, providing valuable insights for architects and engineers involved in constructing resilient buildings in seismically active regions.

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“…A structural design approach incorporating these systems is now widely accepted and regularly used in civil engineering. The four main categories of structural energy dissipation systems are passive, active, semi-active, and hybrid systems [1][2][3][4]. A passive damper is easier to build and install than an active or semiactive damper.…”

Section: Introductionmentioning

confidence: 99%

Effect of U-Shaped Metallic Dampers on the Seismic Performance of Steel Structures based on Endurance-Time Analysis

Farajiani,

Elyasigorji,

Elyasigorji

et al. 2024

Buildings

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Seismic performance of steel moment-resisting frames is investigated through the incorporation of U-shaped metallic dampers. The primary objective is to assess the effectiveness of these dampers in mitigating seismic responses by utilizing various analysis techniques. Two representative structural configurations (5 and 10-story) are studied in both damped and undamped states to reveal the impact of dampers on seismic response reduction. The study utilizes the endurance time analysis (ETA) method, known for its efficiency in evaluating structural seismic performance. To validate the analysis results, a benchmark comparison is made through nonlinear time history analysis (NTHA). Incremental dynamic analysis (IDA) is also conducted to assess structures’ intensity measures with respect to their damage intensity index. The findings demonstrate that U-shaped metallic dampers substantially reduce inter-story drift and story shear forces. Importantly, a close alignment between the results obtained from ETA and NTHA underscores the reliability of the former in assessing seismic performance with supplemental damping devices.

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A State-of-the-Art Review of Passive Energy Dissipation Systems in Steel Braces

Cited by 20 publications

References 159 publications

Design of Additional Dissipative Structures for Seismic Retrofitting of Existing Buildings

Design of Additional Dissipative Structures for Seismic Retrofitting of Existing Buildings

Enhancing the Seismic Response of Residential RC Buildings with an Innovative Base Isolation Technique

Effect of U-Shaped Metallic Dampers on the Seismic Performance of Steel Structures based on Endurance-Time Analysis

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