Numerical investigation of earthquake response reduction effects by negative stiffness connection for adjacent building structures

Longjam, Sonia; Shirai, Kazutaka

doi:10.1016/j.istruc.2022.01.078

Cited by 11 publications

(10 citation statements)

References 40 publications

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“…The two horizontal components of ground motions from the Imperial Valley earthquake at El Centro station in 1994 and from the California earthquake at the Pasadena station in 1952 were used, and artificial SHW2 ground motions were generated as the input waves. These ground motions were selected based on their spectral characteristics, and the fundamental period of the test model was 0.26 s. These sets of ground motions were also used by lots of studies for shaking table test [18,19]. Fig.…”

Section: Loading Sequencementioning

confidence: 99%

“…Chong et al [17] investigated the seismic performance of exterior wall panels with a pair of U-shaped steel plate energy absorbers, and the results demonstrated that in case of the crawler-type rolling deformation, the U-shaped steel plate energy absorber improved the energy dissipation capacity and deformation performance of the overall structure. Longjam and Shirai [18] evaluated the transfer function for displacement and acceleration of the mainframe and subframe under various structural parameters using a two-degrees-of-freedom model. The researchers found that after setting an optimal negative stiffness and damping at the connecting portion, the peak amplitude of the transfer function of the mainframe can significantly reduce as compared to the reference-controlled case without negative stiffness.…”

Section: Introductionmentioning

confidence: 99%

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Full-scale shaking table test on seismic performance of a steel frame with translational-type precast-concrete exterior wall panel

Shi,

Zhang,

Zhao

et al. 2023

J. vibroeng.

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In order to investigate the deformation behavior, mechanical characteristics of connections, and failure mode of translational precast concrete wall-panels under earthquake loading, a full-scale two-story steel frame model was designed. This test model consisted of 12 precast concrete wall-panels connected with fixed connections at the bottom end and translational-type connections at the top end. This model passed the shaking table testing, and the results demonstrate that the translational-type precast concrete exterior wall panel can ensure the sufficient relative displacement between the wall panel and the main structure under large earthquake loads. It has sufficient capacity to adapt the deformation between the main structure and the wall panels. During the test, localized cracking was observed on the wall panel, while all connections remained in elastic state. The connections between precast concrete exterior wall panels exhibited good performance, that indicates it is an effective tool to protect frame building hangings with exterior wall panels under strong earthquake events.

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Section: Loading Sequencementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Full-scale shaking table test on seismic performance of a steel frame with translational-type precast-concrete exterior wall panel

Shi,

Zhang,

Zhao

et al. 2023

J. vibroeng.

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“…A novel smooth negative stiffness device is able to produce significant apparent weakening in the structure and does not require the additional damping to be added 59 . A coupled vibration control system with suitable negative stiffness can significantly reduce the peak transfer function of the primary structure compared to a vibration control system without negative stiffness 60 . In addition, negative stiffness can address the torsional effect generated in non-coaxial adjacent building structures, thus enhancing the nonlinear energy dissipation effects of the vibration isolation system 61 .…”

Section: Introductionmentioning

confidence: 99%

Parameter optimization of vibration control system for adjacent building structures based on negative stiffness inerter damper

Kang,

Tang,

Wei

et al. 2024

Sci Rep

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Building structures are subjected to strong earthquakes, which result in lateral collisions between them. Such collisions often cause severe structural damage and exacerbate the seismic hazard risk of building structures during earthquake events. This paper discusses the application of vibration control devices based on negative stiffness inerter damper in single-story adjacent building structures. The dynamic equations of the vibration control system containing different types of negative stiffness inerter damper under seismic excitation are established as a unified model. The H2 norm theory and Monte Carlo pattern search method are used to optimize the design parameters to improve the vibration control performance of the system, and the dynamic characteristics of the system are investigated. The results demonstrate that attaching negative stiffness inerter damper to adjacent building structures can effectively improve the overall seismic capacity reserve of the building and reduce the risk of collision of adjacent building structures; improve the robustness and stability of the system, and better reduce the displacement response of the building structure under seismic excitation. In addition, the potential of NSID-based vibration control devices to convert seismic energy into usable electricity has been investigated.

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“…Recently, the concept of introducing negative stiffness elements (or anti‐springs) for vibration control has been reported in previous studies 3–7 . It has been demonstrated in the literature that a system with negative stiffness may have a better vibration control performance if it remains stable.…”

Section: Introductionmentioning

confidence: 99%

“…Recently, the concept of introducing negative stiffness elements (or anti-springs) for vibration control has been reported in previous studies. [3][4][5][6][7] It has been demonstrated in the literature that a system with negative stiffness may have a better vibration control performance if it remains stable. Moreover, the negative stiffness device in TMD-NSD, like inerter-based systems, can be viewed as an indirect technique of increasing the inertia effect of the added mass without directly increasing the mass itself.…”

mentioning

confidence: 99%

Optimum design of a tuned‐mass damper with negative stiffness device subjected to ground excitation

Zhang

Nyangi

2022

Structural Contr & Hlth

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In this study, a negative stiffness device based on the magnetic principle is presented and experimentally tested. Then, a tuned mass damper with a negative stiffness device (denoted as TMD_NSD) subjected to harmonic support excitation is optimized in terms of H ∞ optimization criterion, H2 optimization criterion, and stability maximization criterion (SMC). Closed-form expressions for the optimal tuning parameters are derived in terms of both H ∞ criterion and SMC, while the optimal tuning parameters are numerically determined in terms of H 2 criterion. The control performance of the TMD_NSD is compared with the classical TMD in terms of maximum dynamic amplification factor (DAF max ). It is found that the performance of the TMD_NSD based on these three optimization methods is superior to that of the classical TMD. Besides, the performance based on H ∞ and H 2 optimization is almost similar, while the performance based on SMC is less than the first two methods. Compared with the classical TMD, the TMD_NSD could significantly reduce the primary system's peak value and broaden the efficient frequency range of vibration mitigation. However, surprisingly, the DAF max decreases with the increase in the mass ratio of the classical TMD, while the DAF max for the TMD_NSD increases with the increase in mass ratio. Finally, the effectiveness of optimization methods in seismic response control is examined via time history analyses (THA) under 20 real earthquake excitations. The THA findings suggest that the TMD_NSD is superior to the TMD for seismic response mitigation for the three optimization methods. However, it is noted that the displacement response of TMD_NSD based on H ∞ and H 2 optimization is comparable but slightly better than that of the SMC method. Nevertheless, in terms of absolute acceleration control, it is shown that TMD_NSD performance based on the SMC method is better than that of the H ∞ and H 2 methods. Overall, the three optimization methods are validated to be effective for seismic mitigation of the un-damped single-degree-of-freedom (SDOF) primary structure subjected to real seismic excitations.

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Numerical investigation of earthquake response reduction effects by negative stiffness connection for adjacent building structures

Cited by 11 publications

References 40 publications

Full-scale shaking table test on seismic performance of a steel frame with translational-type precast-concrete exterior wall panel

Full-scale shaking table test on seismic performance of a steel frame with translational-type precast-concrete exterior wall panel

Parameter optimization of vibration control system for adjacent building structures based on negative stiffness inerter damper

Optimum design of a tuned‐mass damper with negative stiffness device subjected to ground excitation

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