A study on response during large deformation in a seismic isolation system of nuclear island buildings.

Kurihara, M.; Nishimoto, Kazuyo; Shigeta, Masayuki; Tachi, Yasuo

doi:10.1299/jsmec1988.33.404

Cited by 3 publications

(2 citation statements)

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“…Kurihara [Kurihara et al, 1990] and Kelly [Kelly, 1997] found that the standard vertical stiffness which is computed for 0% shear strain decreases as the horizontal displacement increases.…”

Section: Measuring Devices Consisted Of Four Linear Variable Displacementioning

confidence: 99%

A Base Isolation System for Developing Countries Using Discarded Tyres Filled with Elastomeric Recycled Materials

Hadad

Calabrese

Strano

et al. 2016

Journal of Earthquake Engineering

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This article studies the performance of economic base isolators using tyres filled with elastomeric recycled materials. The research was conducted to analyse base isolators to be used in developing nations, where the application of conventional elastomeric rubber bearings due to economic reasons is limited.The tested isolators are made of kart tyres filled with different recycled elastomeric materials and aggregates. Dynamic and static tests proved acceptable vertical to horizontal stiffness ratio of the bearings and shake table tests showed an excellent enhancement of the base isolated structural response compared to the corresponding fixed base structure.

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Section: Measuring Devices Consisted Of Four Linear Variable Displacementioning

confidence: 99%

A Base Isolation System for Developing Countries Using Discarded Tyres Filled with Elastomeric Recycled Materials

Hadad

Calabrese

Strano

et al. 2016

Journal of Earthquake Engineering

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“…Montuori et al [20] studied the stability of bearings under compression and shear, and showed that the second shape factor S2 of the bearing was the main factor affecting the stability and shear failure mode of a bearing under large lateral displacement. Kurihara et al [21] found that the horizontal stiffness of a rubber bearing decreased with an increase in horizontal displacement, and the vertical mechanical properties of the bearing were reduced under large deformation. Wu et al [22] proposed a modified probabilistic demand model considering site effects and used it for the study of seismic isolated bridges for high-speed railways; the analysis showed that the horizontal deformation of the seismic isolation bearing increased significantly under soft soil site conditions.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Seismic Isolation Performance of X-Shaped Rubber Bearings (XRBs)

Lin

Xiong

2022

Buildings

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A detailed analysis of the seismic safety performance of building structures using X-shaped rubber bearings (XRBs) under seismic action at different seismic levels of intensity were carried out in this study. The horizontal mechanical properties of XRB were studied by analytical methods. To reveal the failure prevention and control capability of XRBs under strong ground motions, a detailed comparative analysis was conducted of the seismic performances of three-story buildings using XRBs, typical rubber bearings (TRBs), and TRBs with retaining wall protection (RWP). A nonlinear dynamic finite element method was used to analyze the displacement, velocity, and acceleration responses of the seismically isolated structures at different ground motion intensity levels. The results show that the failure of the seismic isolation layer occurs in the building using TRBs under seismic intensity with a 1‱ probability of exceedance (PE) in one year. When the RWP is set around the seismic isolation layer, the superstructure will collide with the wall, which leads to a dramatic increase in superstructure acceleration, while the overall seismic isolation performance of the structure is affected. Nevertheless, XRBs can effectively prevent deformation failure of the seismic isolation layer of a building, reduce the seismic response of a superstructure, and can improve the seismic safety level of a building.

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