Self‐Centering Steel Frame Systems for Seismic‐Resistant Structures

Zhu, Lei; Zhao, Cheng

doi:10.1155/2020/8859881

Cited by 4 publications

(3 citation statements)

References 94 publications

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“…In addition, a connection detail to permit rocking actions only about the beam bottom flange while maintaining the contact between the beam top flange and the column was proposed by Dowden and Bruneau (2011) to reduce frame expansion during rocking actions. Others also proposed to replace beam–column rocking actions with self-centering devices (Fang et al, 2019; Huang et al, 2020; Zhu and Zhao, 2020) to address the frame expansion issue.…”

Section: Self-centering Mechanical Devicesmentioning

confidence: 99%

Self-centering seismic-resistant structures: Historical overview and state-of-the-art

Zhong

Christopoulos

2021

Earthquake Spectra

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This state-of-the-art review provides an overview of the evolution of self-centering structures from early historical structures that inherently exhibited a recentering response to modern systems engineered for enhanced seismic resilience. From the early research investigations that were conducted since the 1960s, to the sharp increase of interest in this topic over the last two decades, self-centering seismic-resistant structures that can mitigate both damage and residual drifts following major earthquakes have seen significant advances. These systems achieve the intended self-centering response by either allowing for the rocking of primary structural elements in a controlled manner, commonly coupled with mechanical restraints and energy dissipation devices, or by including self-centering devices as main structural or supplemental structural members. To better explain the concepts and the underlying mechanics governing their seismic response, detailed schematic illustrations were developed in this article, highlighting the fundamentals behind each of these systems. This article covers a historical overview, presents the state of the research and of the art, discusses general design challenges and practical considerations, and concludes with future research needs to advance the development and broader application of self-centering systems in real structures.

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Section: Self-centering Mechanical Devicesmentioning

confidence: 99%

Self-centering seismic-resistant structures: Historical overview and state-of-the-art

Zhong

Christopoulos

2021

Earthquake Spectra

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“…To improve the seismic performance and resilience of structures, rocking structures have recently been proposed and investigated by numerous structural scholars [4][5][6][7]. They have been applied in recent years on seismic strengthening construction projects of real structures as well, such as a five-story reinforced concrete (RC) frame building located in a high-seismicity area in China [8] and the G3 Building of the Tokyo Institute of Technology [9].…”

Section: Introductionmentioning

confidence: 99%

Experimental Investigation of Precast Rocking Walls Incorporating Tension-Compression and Shear Steel Energy Dissipaters

Liu,

Peng,

Guan

et al. 2023

Applied Sciences

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To fully utilize the potential of earthquake-resistance capacity in rocking wall systems and improve repairability after earthquakes, a precast rocking wall structure is developed with the installation of multiple steel energy dissipaters, i.e., tension–compression and shear steel energy dissipaters. Quasistatic tests were carried out on three specimens to evaluate the seismic performance of the proposed system. A simulation investigation based on OpenSees was conducted to study the effects of the initial stress of strands and the main design parameters. The results indicated that the steel energy dissipaters suffer visible plastic deformation and exhibit excellent energy dissipation capacity. The proposed rocking wall structure presents excellent seismic behavior, satisfactory self-centering capacity, and repairability of the recovering function after an earthquake by replacing only the damaged energy dissipaters. Furthermore, the proposed system provides a new way to achieve the hierarchical energy dissipation mechanism of a structure.

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“…At present, the forms of ERS may mainly include rocking structures [3], self-centering structures [4], replaceable component structures [5], and selfcentering hybrid structures [6]. Among them, rocking structures mainly including rocking frame (RF) structures [7][8][9] and -frame-rocking wall (FRW) structures [10][11][12], as well as bridge structures with rocking piers [13][14][15], are focused due to the excellent resilient capacity. Housner [16] rst proposed the concept of rocking structures and a classical rocking rigid-body model and proved that the structures have excellent seismic performance.…”

Section: Introductionmentioning

confidence: 99%

Resilient Performance of Self‐Centering Hybrid Rocking Columns: Theory, Experiment, and Numerical Simulation

Yan

Wang

2022

Advances in Civil Engineering

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A novel self-centering hybrid rocking column (HRC) with a replaceable soft steel energy dissipator (RED) is proposed to solve the issue of traditional frame structures being vulnerable to damage during earthquakes and difficult rehabilitation after. The resilient performance of the proposed RED-HRC was investigated by using theoretical, experimental, and numerical methods. The yield states of the designed RED are taken as the control points to establish theoretically the corresponding relationship f (M, θ) between the overturning moment M and the rotation angle θ of the RED-HRC. In addition, a group of RED-HRC specimens were tested under pseudo static loading to investigate the resilient performance by considering the main influencing factors of the cross-sectional area of the prestressed unbonded tendons, the initial value of the prestressing force, the axial compression ratio of HRCs, and the thickness of the RED. Moreover, a finite element model (FEM) validated by the experimental data was established by using the ABAQUS platform to further study the resilience of the proposed RED-HRCs, focusing on the energy dissipating efficiency of the RED. The design method and process for the RED-HRC were finally developed. A typical hysteretic response with “double-flag shape” characteristics was obtained. These results show that the proposed RED-HRC has excellent resilient performances of good energy dissipation capacity, strong self-centering ability, and high strength and stiffness, realizing the goal of low damage level during the earthquake and quick rehabilitation after.

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Self‐Centering Steel Frame Systems for Seismic‐Resistant Structures

Cited by 4 publications

References 94 publications

Self-centering seismic-resistant structures: Historical overview and state-of-the-art

Self-centering seismic-resistant structures: Historical overview and state-of-the-art

Experimental Investigation of Precast Rocking Walls Incorporating Tension-Compression and Shear Steel Energy Dissipaters

Resilient Performance of Self‐Centering Hybrid Rocking Columns: Theory, Experiment, and Numerical Simulation

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