Experimental Study of Seismic Isolated Structures with Sliding Implant-Magnetic Bearings

Peng, Yongbo; Huang, Tianchen; Chen, Jianbing

doi:10.1080/13632469.2020.1767230

Cited by 13 publications

(7 citation statements)

References 45 publications

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“…To model the damping force in Equation ( 22), a connection unit is set between the steel ring and the supporting plate and is defined as a basic translation connection by choosing the axial action (Axial). This treatment results in the connection unit having relative motion in a certain direction, while the behavior of the connection unit is described as the damping (Damping), and then defined as the function of the damping force, that is, the first item in Equation (22). To model the repulsive force caused by the magnets deployed in the outer and inner loops in Equation ( 22), an elastic force module (Elasticity) is added to the connection unit to create the elastic force with variable stiffness; then, the function of repulsive force, that is, the second item in Equation ( 22), is added.…”

Section:  mentioning

confidence: 99%

“…17,18 The benefits of sliding magnetic-type bearings lie in adaptive energy dissipation and alterable deflection constraint as the sliding HMB; moreover, the bearings exhibit a reliable static friction to remain at rest during small earthquakes and an expected velocity-relevant kinetic friction to implement efficient seismic protection during moderate and strong earthquakes. [19][20][21][22][23] It is a consensus in the earthquake engineering community that the seismic ground motion is a stochastic process and has strong nonstationary characteristics. While the base-isolated structure designed according to current codes based on the local seismic hazard and a few station records might not guarantee the performance of the base isolation system and ensure the safety of the structure.…”

Section: Introductionmentioning

confidence: 99%

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Probabilistic analysis of seismic mitigation of base‐isolated structure with sliding hydromagnetic bearings based on finite element simulations

Peng

Ding

Liu

et al. 2023

Earthquake Engineering and Resilience

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Base isolation is one of the most efficient methods for seismic mitigation of building and bridge structures in high‐intensity areas. However, the base‐isolated structure designed according to current codes based on the local seismic hazard and a few station records might not guarantee the performance of the base isolation system and ensure the safety of the structure. Carrying out a probabilistic analysis of seismic mitigation of base‐isolated structures, considering the randomness associated with earthquake ground motions, is thus necessary. To this end, the stochastic seismic response and reliability analysis of base‐isolated structures subjected to stochastic ground motions are conducted in this study, in conjunction with the probability density evolution method and the principle of equivalent extreme value event. The recently developed sliding hydromagnetic bearing is employed to constitute the base isolation layer of the base‐isolated structure. A refined finite element analysis is carried out to accurately reveal the dynamic characteristics of the base‐isolated structure. It is shown that the base‐isolated structure can be well simulated by the finite element model, which is verified through a comparative study with the results of shaking‐table tests. The base‐isolated structure gains a sound seismic mitigation compared to the base‐fixed structure in a probabilistic sense, and can ensure the safety of the structure by deploying a moderately designed base isolation system.

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Section:  mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Probabilistic analysis of seismic mitigation of base‐isolated structure with sliding hydromagnetic bearings based on finite element simulations

Peng

Ding

Liu

et al. 2023

Earthquake Engineering and Resilience

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“…Seismic base-isolation represents an efficient way to protect a structure from strong earthquake events [1][2][3][4]. Seismic protection through base-isolation can be realised by means of different devices; to name a few: rubber bearings [1], sliding bearings [2,3], friction pendulums [4]. With respect to baseisolation made of rubber bearings, several works can be found in literature [1,[5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Experimental fire response of seismic elastomeric bearings

Lucon

Baragatti

Possidente

et al. 2022

Engineering Structures

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“…Peng and Huang proposed to implant permanent magnets and elastomer fillings to the regular isolators. is new isolator was named the implant-magnetic bearing (IMB) and had been proved effective in mitigating the story accelerations and interstory drifts via both numerical studies [5] and experimental tests [6,7]. Zheng [8] introduced the shape memory alloys (SMA) into the LRB system and proposed a superelasticsliding lead rubber bearing (SSLRB) isolation system.…”

Section: Introductionmentioning

confidence: 99%

Seismic Vibration Mitigation of a Cable-Stayed Bridge with Asymmetric Pounding Tuned Mass Damper

Zhang

Tan

Liu

et al. 2021

Mathematical Problems in Engineering

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In order to mitigate the seismic response of a cable-stayed bridge, a new type damping device named asymmetric pounding tuned mass damper (APTMD) is developed in this paper on the basis of the traditional symmetric pounding tuned mass damper. The novel APTMD has three parameters to be determined: the left-side gap, the right-side gap, and the frequency ratio. A numerical model of the APTMD damping system is established with consideration of both the computational efficiency and accuracy to enable the parametric optimization of the damper. The numerical model is based on a simplified model of the cable-stayed bridge and a nonlinear pounding force model. The genetic algorithm is utilized for the optimization of the damper. Afterwards, the cable-stayed bridge is subjected to 20 recorded ground motions to evaluate the vibration control effectiveness of the APTMD. Four systems are considered: (1) without dampers; (2) with a TMD; (3) with a PTMD; and (4) with an APTMD. Time history analysis reveals the following: (1) those dampers can all effectively suppress the vibration of the bridge and (2) the vibration control effectiveness of the APTMD is slightly better than the TMD and the PTMD.

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Experimental Study of Seismic Isolated Structures with Sliding Implant-Magnetic Bearings

Cited by 13 publications

References 45 publications

Probabilistic analysis of seismic mitigation of base‐isolated structure with sliding hydromagnetic bearings based on finite element simulations

Probabilistic analysis of seismic mitigation of base‐isolated structure with sliding hydromagnetic bearings based on finite element simulations

Experimental fire response of seismic elastomeric bearings

Seismic Vibration Mitigation of a Cable-Stayed Bridge with Asymmetric Pounding Tuned Mass Damper

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