Seismic Fragility Analysis of Base-Isolated LNG Storage Tank for Selecting Optimum Friction Material of Friction Pendulum System

Kim, Ji Su; Jung, Jung Pyo; Moon, Ji Hoon; Lee, Tae Hyung; Kim, Jong Hak; Han, Tong Seok

doi:10.1142/s1793431119500106

Cited by 10 publications

(3 citation statements)

References 32 publications

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“…Therefore, more studies on the seismic performance of NPP structures are needed. Base isolators such as Lead Rubber Bearing (LRB) or friction pendulum systems can mitigate the possibility of damage to the civil structures and NPPs during an earthquake [1][2][3][4]. Numerous studies have been conducted on the effects of base isolators and the seismic performance of base-isolated NPP structures.…”

Section: Imentioning

confidence: 99%

Seismic Responses of NPP Structures Considering the Effects of Lead Rubber Bearing

Nguyen¹,

Nguyen²

2020

Eng. Technol. Appl. Sci. Res.

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Abstract-This study investigates the effects of Lead Rubber Bearings (LRBs) on Floor Response Spectra (FRS) of Nuclear Power Plant (NPP) structures. Three main structures in the Advanced Power Reactor 1400 (APR1400) NPP including the reactor containment building, an internal structure, and an auxiliary building were numerically developed in SAP2000. The structures were modeled using beam stick elements, and lumped masses were assigned to beam element nodes. All equivalent section properties of beam elements were calculated based on the designed cross-sections of the structures. A series of 40 ground motions with response spectra scaled to match the NRC 1.60 spectrum were utilized in numerical time-history analyses. Finally, a thorough comparison of FRS was conducted at different elevations of the structures, considering both with and without LRB. Numerical results showed that the FRS of base-isolated structures at higher elevations was significantly reduced compared to non-isolated structures. However, at lower elevations, the FRS was higher for the base-isolated structures compared to the non-isolated ones. Additionally, at a low-frequency range, roughly smaller than 3 Hz, the FRS of base-isolated structures was always greater than that of the non-isolated ones.

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Section: Imentioning

confidence: 99%

Seismic Responses of NPP Structures Considering the Effects of Lead Rubber Bearing

Nguyen¹,

Nguyen²

2020

Eng. Technol. Appl. Sci. Res.

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“…Waghmare et al [13] studied the shock absorption effect of the semi-active control strategy using liquid viscous damper on the liquid storage tank. Kim et al [14] established a set of optimal friction material selection system for friction pendulum isolation storage tank, and found that the lower friction coefficient is more helpful to prevent the damage of liquid storage tank by vulnerability analysis. Jiang et al [15] proposed the optimization design method of liquid storage tank with inertial container isolation system, found that the method met the requirements of sloshing wave height and effectively reduced the base shear force and isolation layer displacement.…”

Section: Introductionmentioning

confidence: 99%

Seismic performance evaluation of a base-isolated steel liquid storage tank with limiting-devices considering soil-structure interaction

2023

Archives of Civil Engineering

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Liquid storage tank is widely used in the petrochemical industry, earthquake will lead to structural damage and secondary disasters, and damping control opens up a new way for seismic design of liquid storage tank. Considering soil-structure-fluid interaction, liquid sloshing dynamic behavior and material nonlinearity, a three-dimensional calculation model of shock absorption liquid storage tank is established by combining sliding isolation and displacement-limiting devices. The dynamic responses of the liquid storage tanks under the action of Kobe and El-Centro waves are investigated, and the influence of soil-structure interaction (SSI) on the dynamic response is discussed. The results show that the damping ratio is basically between 30% and 90%. After the SSI is considered, the damping ratio of liquid sloshing wave height is increased, while the damping ratio of the dynamic response of the liquid storage tank is decreased, and the change of elastic modulus has little effect on the damping effect. The sliding isolation with displacement-limiting devices has significant damping control effects on the liquid sloshing wave height and the dynamic responses of the liquid storage tank.

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“…Nikoomanesh et al 16 proposed a vertical isolation system for liquid storage tanks, and the parameter research showed that the system was more effective for slender liquid storage tanks. Kim et al 17 established a set of optimal friction material selection system for friction pendulum isolation tank, and obtained a lower friction coefficient through vulnerability analysis, which was more helpful to prevent tank damage. Jiang et al 18 put forward the optimization design method of the tank with inertial vessel isolation system, and obtained that the method could meet the requirements of sloshing wave height and effectively reduce the base shear force and the displacement of isolation layer.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Responses of Liquid Storage Tank Under Near Fault Pulse-Like Earthquakes With Different Focal Mechanisms

Wei¹,

Shen²,

Cheng³

2022

The International Journal of Acoustics and Vibration

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A liquid storage tank has a very extensive role in the petrochemical industry, and earthquake damage will cause very serious consequences. Considering the fluid-solid coupling, material nonlinearity and liquid level shaking dynamic behavior, three-dimensional calculation models of non-isolated and isolated liquid storage tanks are established, respectively. 12 earthquake waves are selected from Pacific Earthquake Engineering Research Center (PEER), and there are three earthquake waves of reverse (R), strike slip (SS), reverse oblique (RO) and normal (N) focal mechanisms, respectively. The influence of the focal mechanism on the dynamic responses of the liquid storage tank is investigated. The effectiveness control of sliding isolation on a near fault earthquake is discussed. The influence of the diameter of the limiting device on the shock absorption effect is analyzed. The results show that the order of influence of four types of focal mechanisms on liquid sloshing wave height is as follows: RO$mathrm{>$R$mathrm{>$SS$mathrm{>$N. For the wall displacement, liquid pressure and effective stress of the tank wall, the response under N-type focal mechanism earthquake is generally larger than that of the other three types, and the difference of wall displacement, liquid pressure and wall effective stress under RO, R and SS focal mechanism earthquakes is small. The results show that the dynamic responses of the liquid storage tank under different focal mechanism earthquakes is quite different. Sliding isolation can significantly reduce the dynamic responses of the liquid storage tank under strong near-fault earthquakes, and the diameter of the limiting device will affect the shock absorption effect of sliding isolation.

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Seismic Fragility Analysis of Base-Isolated LNG Storage Tank for Selecting Optimum Friction Material of Friction Pendulum System

Cited by 10 publications

References 32 publications

Seismic Responses of NPP Structures Considering the Effects of Lead Rubber Bearing

Seismic Responses of NPP Structures Considering the Effects of Lead Rubber Bearing

Seismic performance evaluation of a base-isolated steel liquid storage tank with limiting-devices considering soil-structure interaction

Dynamic Responses of Liquid Storage Tank Under Near Fault Pulse-Like Earthquakes With Different Focal Mechanisms

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