Review on the rocking wall systems as a self-centering mechanism and its interaction with floor diaphragm in precast concrete structures

Masrom, Mohd Asha’ari; Hamid, Nor Hayati Abdul

doi:10.1590/1679-78256115

Cited by 9 publications

(4 citation statements)

References 53 publications

(79 reference statements)

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“…l w l w Nazari et al [61] provided confinement at wall base using base channels having 0.20 length ( is length of the wall) and hoops which resulted in acceptable wall toe performance against dynamic loads. Twigden et al [62] and Yang and Lu [63] used the concrete confinement model in Mander et al [64] to provide confinement at the wall base. Twigden et al [62] also used additional cast in steel angles to provide confinement and prevent toe concrete damage.…”

Section: Concrete Post-tensioned Shear Wallsmentioning

confidence: 99%

Behaviour of self-centring shear walls—A state of the art review

Javadi

Hassanli

Rahman

et al. 2023

Front. Struct. Civ. Eng.

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The application of unbonded post-tensioning (PT) in structural walls has led to the development of advanced self-centring (rocking) shear wall systems that has significant advantages, including accelerated construction due to the incorporation of prefabricated elements and segmental construction for different materials (e.g., concrete, masonry, and timber), reduced residual drifts, and little damage upon extreme seismic and wind loads. Concrete, masonry, and timber are often used for the construction of unbonded PT structural wall systems. Despite extensive research since the 1980s, there are no well-established design guidelines available on the shear wall configuration with the required energy dissipation system, joint’s locations and acceptance criteria for shear sliding, confinement, seismic performance factors, PT loss, PT force range and residual drifts of shear walls subjected to lateral loads. In this research a comprehensive state-of-the-art literature review was performed on self-centring shear wall system. An extensive study was carried out to collect a database of 100 concrete, masonry, and self-centring shear wall tests from the literature. The established database was then used to review shear walls’ configurations, material, and components to benchmark requirements applicable for design purposes. The behaviour of concrete, masonry and timber shear walls were compared and critically analysed. The general behaviour, force-displacement performance of the walls, ductility, and seismic response factors, were critically reviewed and analysed for different self-centring wall systems to understand the effect of different parameters including configurations of the walls, material used for construction of the wall (concrete, masonry, timber) and axial stress ratio. The outcome of this research can be used to better understand the behaviour of self-centring wall system in order to develop design guidelines for such walls.

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Section: Concrete Post-tensioned Shear Wallsmentioning

confidence: 99%

Behaviour of self-centring shear walls—A state of the art review

Javadi

Hassanli

Rahman

et al. 2023

Front. Struct. Civ. Eng.

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“…In recent years, many studies have explored the idea of using a rocking mechanism between precast elements to dissipate energy [11][12][13][14][15][16][17][18][19][20][21], however, to the authors' knowledge, none of them include a smart control system. The main advantage of a SA control with variable dampers is the ability to modify the mechanical properties of the devices according to a given control logic that aims at reducing the overall structural seismic response.…”

Section: Introductionmentioning

confidence: 99%

A Semi-Active Control Technique through MR Fluid Dampers for Seismic Protection of Single-Story RC Precast Buildings

et al. 2022

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The work proposes an innovative solution for the reduction of seismic effects on precast reinforced concrete (RC) structures. It is a semi-active control system based on the use of magnetorheological dampers. The special base restraint is remotely and automatically controlled according to a control algorithm, which modifies the dissipative capability of the structure as a function of an instantaneous dynamic response. The aim is that of reducing the base bending moment demand without a significant increase in the top displacement response. A procedure for the optimal calibration of the parameters involved in the control logic is also proposed. Non-linear modelling of a case-study structure has been performed in the OpenSees environment, also involving the specific detailing of a novel variable base restraint. Non-linear time history analyses against natural earthquakes allowed testing of the optimization procedure for the control algorithm parameters, finally the capability of the proposed technology to mitigate seismic risk of new or existing one-story precast RC structures is highlighted.

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“…In contrast, the hinged rocking wall increases the displacement with a heavier wall being more detrimental. In recent years, many scholars summarized the existing research results of rocking wall-frame structure, expounded design methods of the wall and wall joints, and pointed out the further research emphasis of rocking wall [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Structural Vibration Control with the Implementation of a Tuned Mass Rocking Wall System

et al. 2021

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A tuned mass rocking wall (TMRW)-frame structure system is proposed to improve the energy dissipation ability of the traditional rocking wall-frame system. Based on the energy dissipation principle of the traditional tuned mass damper (TMD), a TMRW is designed with proper mass and stiffness according to the dynamic characteristic of the host structure. Firstly, considering the presence of inherent structural damping, the dynamic amplification factor of the main mass was derived from the dynamic equations of the TMRW mechanism. A practical design table was then obtained after parameter study. Secondly, by taking a six-story frame structure as an example, the dynamic time-history analysis was conducted to study TMRW’s seismic performance. The inter-story drift ratios of the TMRW-frame, the traditional rocking wall-frame, and the frame structures were compared, and the seismic responses of the controlled and uncontrolled structures were also compared. The results demonstrate that the TMRW can effectively reduce the inter-story displacement of the host structure, and the lateral deformation mode of the host structure tends to be more uniform. However, compared with the traditional rocking wall-frame system, the proposed TMRW has less ability on coordinating deformation.

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Review on the rocking wall systems as a self-centering mechanism and its interaction with floor diaphragm in precast concrete structures

Cited by 9 publications

References 53 publications

Behaviour of self-centring shear walls—A state of the art review

Behaviour of self-centring shear walls—A state of the art review

A Semi-Active Control Technique through MR Fluid Dampers for Seismic Protection of Single-Story RC Precast Buildings

Structural Vibration Control with the Implementation of a Tuned Mass Rocking Wall System

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