Pseudo-dynamic experimental study on seismically isolated prefabricated RC structure with roller-bearing subjected to mainshock-aftershock sequences

Huang, Xiaoning; Liu, Jieya; Wang, Ning; Xu, Sheng

doi:10.1016/j.jobe.2022.105775

Cited by 3 publications

(1 citation statement)

References 32 publications

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“…Due to the randomness of various factors such as the focal location, focal depth, fault strike in the earthquake, and site conditions, the disaster caused by the aftershock is more catastrophic than the main earthquake. Therefore, some researchers have shifted more attention to the responses of various structures under the main shock and aftershocks [2][3][4][5][6][7], such as the special steel moment frame structures, corroded steel moment-resisting frames, etc. As a result, structural performance indexes such as vulnerability and recoverability under main shock and aftershock have been widely studied [8][9][10].…”

Section: Introductionmentioning

confidence: 99%

The Generation of the Target Aftershock Spectrum Based on the Conditional Mean Spectrum of Aftershocks

Zhu,

Du,

Yang

et al. 2023

Buildings

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Numerous studies have examined the responses of various structures to the mainshock–aftershock (MS–AS) ground motion, and the MS–AS ground motions are very important as the input. Therefore, in the absence of aftershock information, it is particularly critical to construct a reasonable MS–AS seismic sequence. This paper aims to provide a new reasonable method for generating the target aftershock response spectrum, which can be used to select or artificially simulate aftershock ground motion, given the seismic information of the main shock. Firstly, the magnitude, fault size, and location of the aftershock are determined. Then, other parameters required for the aftershock ground motion prediction equation (GMPE) are calculated. Subsequently, the correlation of the spectral shape to the MS–AS ground motion is used to modify the response spectrum predicted using the GMPE to obtain the conditional mean spectrum of aftershocks (CMSA). Finally, the relative errors of the predicted spectrum via the ASK14 model and CMSA are compared for four different assumptions. The results show that the simulated aftershock parameters and the actual ones accord well, and the relative errors of the CMSA can be controlled within 20%. Meanwhile, the discrete property of the target aftershock response spectrum is closer to the real recorded response spectrum.

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Section: Introductionmentioning

confidence: 99%

The Generation of the Target Aftershock Spectrum Based on the Conditional Mean Spectrum of Aftershocks

Zhu,

Du,

Yang

et al. 2023

Buildings

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Torsional Response of a Building Isolated with Triple Friction Pendulum Bearings under Stochastic Ground Motion Excitation

Qing,

2024

Iran J Sci Technol Trans Civ Eng

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Numerical Study on Seismic Performance of a New Prefabricated Reinforced Concrete Structural System Integrated with Recoverable Energy-Dissipating RC Walls

Zheng,

Chen,

Lin

2024

Buildings

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To enhance the performance of infill walls and reduce seismic damage, this paper proposes a novel prefabricated reinforced concrete (PRC) energy-dissipating wall, forming a new recoverable energy-dissipating PRC (ED-PRC) structural system. The system features pre-set gaps on both sides and the top of the PRC wall, with flexible materials filling the gaps on the sides. The top of the PRC wall is connected to the beam through several double-conical mild steel dampers to ensure the efficient transfer of horizontal shear forces between the main frame and the PRC wall. A numerical study was employed to investigate the seismic performance and the staged yield capacity. The results show that this design achieves a yielding sequence of dampers → wall → main frame. Furthermore, during the early to mid-phases of the cyclic loading simulations, the double-conical mild steel dampers with the low yield point utilized in the ED-PRC structural system exhibited exceptional energy dissipation capabilities. Notably, the LY100 dampers accounted for up to 61.84% of the total energy dissipation, with the LY160 and LY225 dampers contributing 55.35% and 50.25%, respectively. It indicates that the proposed ED-PRC structural system significantly enhances the ductility and the energy dissipation capacity under seismic loading while substantially reducing damage to the primary structure. The use of prefabricated components facilitates modular construction, allowing for quick dismantling and replacement after an earthquake, thereby rapidly restoring the structural seismic resilience.

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Pseudo-dynamic experimental study on seismically isolated prefabricated RC structure with roller-bearing subjected to mainshock-aftershock sequences

Cited by 3 publications

References 32 publications

The Generation of the Target Aftershock Spectrum Based on the Conditional Mean Spectrum of Aftershocks

The Generation of the Target Aftershock Spectrum Based on the Conditional Mean Spectrum of Aftershocks

Torsional Response of a Building Isolated with Triple Friction Pendulum Bearings under Stochastic Ground Motion Excitation

Numerical Study on Seismic Performance of a New Prefabricated Reinforced Concrete Structural System Integrated with Recoverable Energy-Dissipating RC Walls

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