Self-centering steel column base with metallic energy dissipation devices

Kamperidis, Vasileios C.; Karavasilis, Theodore L.; Vasdravellis, George

doi:10.1016/j.jcsr.2018.06.027

Cited by 69 publications

(57 citation statements)

References 23 publications

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“…Some of the experimental results showed that this connection eliminated residual deformations and kept beam in elastic range when the story drifts were smaller than 6%. Furthermore, the column base joints with WHPs were investigated by Kamperidis et al [20].…”

Section: Connections With Yielding Ed Devicesmentioning

confidence: 99%

Self‐Centering Steel Frame Systems for Seismic‐Resistant Structures

Zhu

Zhao

2020

Advances in Civil Engineering

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This paper introduces a review of self-centering steel frame systems for seismic-resistant structures. The components and basic mechanisms of the developing posttensioned connections and self-centering braces are briefly introduced. The structural details and seismic behaviors of the self-centering systems proposed in recent years, including connections, energy dissipating braces, and steel frames, are condensed in categories. The theoretical and experimental results indicated that self-centering action could minimize residual deformation and structural damage. The energy dissipating capability of the self-centering systems is greatly enhanced by the application of energy dissipating device. The shape memory alloys (SMAs) and prepressed springs which exhibited great potential in energy dissipation and recentering capability have been studied increasingly in recent years. Abundant numerical models were propounded to investigate the cyclic response of these self-centering systems. The current research challenges and the critical issues which need further study are discussed at the end of this paper.

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Section: Connections With Yielding Ed Devicesmentioning

confidence: 99%

Self‐Centering Steel Frame Systems for Seismic‐Resistant Structures

Zhu

Zhao

2020

Advances in Civil Engineering

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“…Simple analytical equations were used to describe the monotonic and cyclic moment-rotation behaviour while nonlinear dynamic analyses were carried out to show the potential of the column base in preventing the first-floor column yielding and in eliminating the first storey residual drift. Similarly, Kamperidis et al [7] proposed a partial strength low-damage self-centering steel column base equipped with PT tendons to achieve self-centering behaviour and hourglass shape steel yielding devices, referred to as web hour-glass pins to dissipate the seismic energy. More recently, Latour et al [8] proposed and experimentally investigated, an innovative rocking splice connection where the seismic behaviour is controlled by a combination of FDs and PT bars with disk springs.…”

Section: Introductionmentioning

confidence: 99%

Seismic response of a steel resilient frame equipped with self‐centering column bases with friction devices

et al. 2021

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In the last two decades many researchers focused on the development of innovative building structures with the aim of achieving seismic resilience. Among others, steel Moment Resisting Frames (MRFs) equipped with friction devices in beam‐to‐column joints have emerged as an effective solution able to dissipate the seismic input energy while also ensuring the damage‐free behaviour of the system. However, to date, little attention has been paid to their column bases, which represent fundamental components in order to achieve resilience. In fact, column bases designed by current conventional approaches lead to significant seismic damage and residual drifts leading to difficult‐to‐repair structures. The present paper evaluates the seismic performance of steel MRFs equipped with an innovative damage‐free, self‐centring, rocking column base joints. The proposed column base consists of a rocking splice joint where the seismic behaviour is controlled by a combination of friction devices, providing energy dissipation capacity, and pre‐loaded threaded bars with disk springs, introducing restoring forces in the joint. The design procedure of the column base is presented, a numerical OpenSees model is developed to simulate the seismic response of a perimeter seismic‐resistant frame, including the hysteretic behaviour of the connection. Non‐linear dynamic analyses have been carried out on a set of ground motions records to investigate the effectiveness of the column base in protecting the first storey columns from yielding and in reducing the residual storey drifts. Incremental Dynamic Analyses are used to investigate the influence of the record‐to‐record variability and to derive fragility curves for the whole structure and for several local engineering demand parameters of the frame and of the column base connection. The results show that the damage‐free behaviour of the column bases is a key requirement when self‐centering of MRFs is a design objective.

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“…To this scope, several researchers proposed Self-Centring Damage-Free (SCDF) connections also in the CBs [e.g., [11][12][13][14]. It is noteworthy that most of these studies [e.g., 11,14] have focused on the use of SCDF CBs within MRFs also equipped with SCDF BCJs demonstrating advantages in terms of both self-centring capabilities and damage-free behaviour. Nevertheless, a drawback of these solutions is the complexity of the structural details.…”

Section: Introductionmentioning

confidence: 99%

Optimised Strategies for Seismic‐Resilient Self‐Centring Steel Moment Resisting Frames

et al. 2021

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In recent years there have been significant advancements in the definition of innovative minimal damage structures chasing the urgent requirements of more resilient societies against extreme seismic events. In this context, a type of seismic‐resilient moment resisting frames (MRFs) is based on the use of Self‐Centring Damage‐Free (SCDF) devices in column bases and beam‐to‐column joints. However, when these devices are widespread across the whole structure, the details' complexity increases significantly with respect to conventional solutions, thus limiting their practical application. To overcome this drawback, current research works are focusing on the definition of optimum locations for SCDF devices such that their effectiveness is maximised. Within this context, the present study investigates optimum locations for a limited number of SCDF devices to be used within mid‐ and high‐rise MRFs. An 8‐storey structure is selected for case study purposes and nineteen configurations are investigated considering different positions of SCDF joints. Numerical models of the selected configurations are developed in OpenSees and Incremental Dynamic Analysis are performed. The seismic responses of the case‐study structures equipped with different layouts of SCDF devices are evaluated and compared. Some considerations in terms of optimal distributions of SCDF devices are made with the aim of maximising the efficiency of the solution and the seismic performance of mid‐ and high‐rise MRFs.

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Self-centering steel column base with metallic energy dissipation devices

Cited by 69 publications

References 23 publications

Self‐Centering Steel Frame Systems for Seismic‐Resistant Structures

Self‐Centering Steel Frame Systems for Seismic‐Resistant Structures

Seismic response of a steel resilient frame equipped with self‐centering column bases with friction devices

Optimised Strategies for Seismic‐Resilient Self‐Centring Steel Moment Resisting Frames

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