Liquefied natural gas storage tank simplified mechanical model and seismic response analysis

Luo, Dongyu; Sun, Jing; Cui, Lifu; Wang, Zhen

doi:10.1016/j.soildyn.2020.106491

Cited by 17 publications

(3 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, this study considers a full-capacity LNG storage tank (hereinafter referred to as a LNG storage tank) as the research object. The main structure of the LNG storage tank is composed of an inner tank of low-temperature-resistant nickel steel, an outer tank of prestressed reinforced concrete, glass brick, elastic felt, and expanded perlite powder between the inner and outer tanks [6,7]. Concrete is a core material in LNG storage tanks, and its performance is directly related to the safety of the tanks [8].…”

Section: Introductionmentioning

confidence: 99%

Cross-Scale Reliability Analysis Framework for LNG Storage Tanks Considering Concrete Material Uncertainty

Liu,

Ma,

et al. 2024

JMSE

View full text Add to dashboard Cite

The reliability of liquefied natural gas (LNG) storage tanks is an important factor that must be considered in their structural design. Concrete is a core component of LNG storage tanks, and the geometric uncertainty of concrete aggregate material has a significant impact on their reliability. However, owing to the significant size difference between the concrete aggregate compared to the LNG storage tank, structural analysis using an accurate finite element model that includes all the geometric characteristics of the aggregate incurs significant analytical costs. In particular, for reliability analysis requiring a large number of samples, the computational costs incurred by finite element models are infeasible. Therefore, a dual acceleration strategy based on the asymptotic homogenization method and surrogate model technology is proposed to improve the efficiency of LNG storage tank reliability analysis. In the cross-scale analysis of a LNG storage tank based on asymptotic homogenization, order reduction of the LNG storage tank analysis model was realized. Based on this, a surrogate model construction method with the aggregate fraction and mass moment as inputs was proposed to further accelerate the reliability analysis of LNG storage tanks. Subsequently, a Monte Carlo method was used to perform a reliability analysis of the LNG storage tank considering the uncertainty of the concrete aggregate geometry and distribution under the action of liquid weight and wind load. The analysis showed that the wind load has a significant influence on the safety of the design of the roof of a LNG storage tank. The directionality of the wind load has a significant impact on the distribution of the sample point response for reliability analysis and the failure mode of the LNG storage tank. Owing to the directionality of the wind load, the response distributions of the maximum displacement and maximum stress of LNG were more concentrated, and the reliability of the LNG storage tank decreased after considering the wind load. In particular, the stress reliability of the tank decreased by 5.86%. When only the liquid load was considered, the maximum displacement and stress exhibited asynchronous failure, and the two almost never occurred simultaneously. When the wind load was considered, the failure mode of the LNG storage tank was dominated by the maximum stress. Moreover, the numerical example also demonstrated that the degree of freedom involved in structural analysis, as well as the time of structural analysis can be significantly reduced. So, the proposed cross-scale analysis framework can significantly improve the efficiency of reliability analysis. The conclusions established in this study provide theoretical and methodological guidance for the reliable design of LNG storage tanks.

show abstract

Section: Introductionmentioning

confidence: 99%

Cross-Scale Reliability Analysis Framework for LNG Storage Tanks Considering Concrete Material Uncertainty

Liu,

Ma,

et al. 2024

JMSE

View full text Add to dashboard Cite

show abstract

“…Subsequently, Xue et al 22 studied the influence of different spectra on the liquid dynamic characteristics inside rectangular tanks through vibration table testing. To study the fluid dynamic characteristics of LNG tanks and how insulation layers impact these characteristics under different seismic motions, Luo et al 23 conducted vibration table tests. Tsao et al 24 conducted pulse and harmonic vibration table testing on the liquid sloshing frequency and damping effect in a rectangular water tank filled with porous media.…”

Section: Introductionmentioning

confidence: 99%

Experimental study on characteristics of liquid dynamics in a cylindrical water tank under harmonic excitation

Zhao,

Jia,

et al. 2023

Earthquake Engineering and Resilience

View full text Add to dashboard Cite

As the offshore engineering industry continued to develop, issues such as damage to storage structures due to liquid shaking became increasingly prevalent. This paper explored the dynamic response of liquid within a rigid cylindrical water tank subjected to harmonic excitation through vibration table tests, analyses, and numerical simulations. Using the Laplace equation and the Bessel function of the first kind, the analytical formula of liquid dynamic response was derived. A numerical model was established by ANSYS software to verify the accuracy of the analytical solution. At the same time, the response characteristics of hydrodynamic pressure and liquid level wave height were studied by vibration table tests. In this experiment, a rigid cylindrical water tank with varying depths of liquid was subjected to harmonic excitations utilizing a vibration table. In most cases, the experimental results agreed well with the analytical formula. However, under conditions of relatively severe liquid sloshing, there was a discrepancy in peak values between the experiment and the analytical formula. The experimental data indicated that both the hydrodynamic pressure and liquid level wave height increase with an increase in harmonic excitation frequency and amplitude.

show abstract

“…In this structure, the most dangerous place during an earthquake is the support part, in which, under seismic load, the anchoring anchors of the tank bottom are broken on one side, and on the opposite side, the wall stability is lost, as a result of which an "elephant's leg" is formed (Fig. 2) [7][8][9][10]. If there are weak soils in the form of permafrost bases at the base of such a structure, the influence of two natural factors will have a negative impact on the operation of the entire tank, and the risk of its loss of bearing capacity increases dramatically.…”

Section: Introductionmentioning

confidence: 99%

Influence of Tanks Design Features on Earthquake Resistance in Permafrost Areas

Belash

Dymov

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

Tanks for the storage of oil and gas play a special role in the oil and gas industry. During the construction and design of such structures in difficult geological conditions, increased attention is paid to their safe operation. The combined manifestation of seismic impacts and the presence of permafrost can pose an increased danger. The article presents an analysis of the various components of an oil and gas storage system. A comparative analysis of the seismic resistance of storage tanks was carried out, taking into account the presence of a thawed permafrost base in the base. It is shown that during thawing, the permafrost base can greatly affect the seismic resistance of the structure.

show abstract

Liquefied natural gas storage tank simplified mechanical model and seismic response analysis

Cited by 17 publications

References 26 publications

Cross-Scale Reliability Analysis Framework for LNG Storage Tanks Considering Concrete Material Uncertainty

Cross-Scale Reliability Analysis Framework for LNG Storage Tanks Considering Concrete Material Uncertainty

Experimental study on characteristics of liquid dynamics in a cylindrical water tank under harmonic excitation

Influence of Tanks Design Features on Earthquake Resistance in Permafrost Areas

Contact Info

Product

Resources

About