Earthquake Response Analysis for Seismic Isolation System of Single Layer Lattice Domes With 300m Span

Park, Kang-Geun; Chung, Mi-Ja; Lee, Dong Hoon

doi:10.9712/kass.2018.18.3.105

Cited by 7 publications

(2 citation statements)

References 4 publications

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“…Rubber isolation bearings not only ensure the stability of the superstructure, but also effectively release stress.Park et al studied the dynamic performance of lead-rubber bearings and lead-free rubber bearings under seismic isolation, and found that the seismic performance of lead-free rubber bearings is due to the absence of lead-free rubber bearings. They also analyzed the dynamic response characteristics of lead-free bearings under horizontal and vertical seismic excitations [3].Similarly, Jamalvandi et al conducted a comparative study on lead rubber bearings and non lead rubber bearings for storage tanks and found that lead rubber bearings have high isolation efficiency [4].Lu et al developed a simplified method for verifying the free vibration response of lead rubber bearings and linear natural rubber bearings in isolation design and seismic demand assessment, and obtained corresponding formulas [5]. Cao et al proposed a lead rubber isolation bearing for multi-stage composite bridges that meets specific performance under different levels of seismic hazards to ensure isolation efficiency and limit the ability of bearings to move too much under different seismic effects.…”

Section: Introductionmentioning

confidence: 99%

Research on seismic isolation performance of nuclear power plant containment structures

Xue,

Cui,

Pei

et al. 2024

Preprint

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Non isolated structures have problems such as strong destructiveness and poor isolation effect when encountering earthquakes. Setting isolation bearings can extend the natural vibration period of the structure, reduce the horizontal seismic response of the structure, and also enhance the overall seismic performance of the structure.The new material - epoxy plate thick layer rubber isolation bearing has unique advantages compared to other bearings, such as effective energy absorption, simple construction, and low cost.This study establishes a three-dimensional isolated nuclear power plant containment structure based on the principle of similarity ratio, and compares and analyzes the acceleration, base reaction, and displacement responses of non isolated and isolated structures. At the same time, the incremental dynamic analysis method (IDA) is used to analyze the seismic vulnerability of the structure, and the isolation performance of the nuclear containment structure using epoxy plate thick layer rubber isolation bearings is comprehensively and deeply explored.The results show that the epoxy plate thick layer rubber isolation bearing effectively prolongs the natural vibration period of the structure, reduces the horizontal seismic response of the structure, and reduces the dome acceleration response by 66.55%, and the base horizontal shear force by 55.51%.Therefore, setting epoxy plate thick layer rubber isolation bearings in the isolation layer can effectively enhance the seismic performance of the structure, thereby improving the redundancy of the nuclear power plant containment structure. Keywords: epoxy plate thick layer rubber isolation bearing; Time history analysis; Seismic performance; Incremental dynamic analysis method.

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Section: Introductionmentioning

confidence: 99%

Research on seismic isolation performance of nuclear power plant containment structures

Xue,

Cui,

Pei

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Saka et al [2] investigated the elastic buckling loads and buckling modes of double-layer domes with various lattice patterns for all loading condition and half loading condition. Park et al [3] investigated the earthquake response of 300 m spanned single-layer lattice domes with and without lead rubber bearing seismic isolation device. Richard Liew [4] presented the design challenges recent innovations and the issues related to the design and construction of complex spatial structures for Garden by the Bay and Changi Jewel in Singapore.…”

Section: Introduction mentioning

confidence: 99%

Dynamic Response of 100 m, 200 m, 300 m Lattice Domes with LRB Seismic Isolator

Choi¹,

Kim²,

Park³

2019

JCEA

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The objective of this study is to analyze the seismic response characteristics of 100 m, 200 m, 300 m spanned lattice domes under both horizontal and up-down ground motion of El Centro earthquake. For the analysis of earthquake response of lattice domes, the time history analysis is used for the estimation of the dynamic response. Horizontal and up-down earthquake ground motions cause a large asymmetric vertical deformation in the large spatial domes. This study is to investigate the seismic characteristics of lattice domes for eigenvalue modes, displacement and acceleration response. The earthquake response of lattice domes with LRB (lead rubber bearing) isolation device by the horizontal and up-down combined ground motion is significantly reduced for the asymmetric vertical deformation and accelerations of domes.

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Comparative seismic design optimization of spatial steel dome structures through three recent metaheuristic algorithms

Çarbaş

Artar

2022

Front. Struct. Civ. Eng.

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Earthquake Response Analysis for Seismic Isolation System of Single Layer Lattice Domes With 300m Span

Cited by 7 publications

References 4 publications

Research on seismic isolation performance of nuclear power plant containment structures

Research on seismic isolation performance of nuclear power plant containment structures

Dynamic Response of 100 m, 200 m, 300 m Lattice Domes with LRB Seismic Isolator

Comparative seismic design optimization of spatial steel dome structures through three recent metaheuristic algorithms

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