Shaking table test of space double-layer cylindrical reticulated shell with three-dimensional isolation bearing

2022 ◽  
Vol 189 ◽  
pp. 107107
Author(s):  
Gui-bo Nie ◽  
Chen-xiao Zhang ◽  
Zhi-yong Wang ◽  
Wei-dan Xu ◽  
Yu-jie Shi
Author(s):  
Yang Jie ◽  
Li ShaoPing ◽  
Yuan Fang ◽  
Xia ZuFeng ◽  
Huang XiaoLin

In this paper, the base-isolated design of Nuclear Island structure will be introduced, including the general requirement and the goal of the base-isolated design. Integrated assessment has been performed for the base-isolated design of Nuclear Island structure in the earthquake 0.6g. A series of nonlinear time-history analysis were performed to predict the maximum displacement and acceleration of the isolation layer, the maximum stress of the isolation units, and the floor response spectra of each story of the superstructure in the earthquake 0.6g, considering the realistic mechanical properties and the layout of the isolators. In order to provide realistic data to validate the numerical method, a reduced-scale earthquake simulation of base-isolated nuclear structure on a shaking table was carried out. The study was primarily focused on the response of superstructure and the isolation unit. The dynamic characteristic was examined, together with the vibration acceleration and displacement under different levels of seismic wave. The test results of a reduced-scale nuclear island model previously tested on a shaking table were compared with three-dimensional finite element simulation results. The results of this study provide the technical basis for the base-isolated design of Nuclear Island structure.


2013 ◽  
Vol 694-697 ◽  
pp. 321-324 ◽  
Author(s):  
Shu Wei Wang ◽  
Ying Ming Zhou ◽  
Shu Yun Mi

In this paper, a three-dimensional shaking table test of three three-span subway station model is done. Three test seismic waves were selected in this experiment, which were applied to the model. Modal analysis of the structure was done, and the determination of the acceleration of the model structure was obtained. And the law of underground structures under earthquake damage was analysis. Soil surface acceleration process and its response spectrum and strain are obtained in the different amplitudes of ground motion input case. From experiment cracks in the emergence and development of the situation were observed, and which gives recommendations for the seismic design of underground structures.


2018 ◽  
Vol 83 (750) ◽  
pp. 1139-1149
Author(s):  
Yusuke TOSAUCHI ◽  
Eiji SATO ◽  
Kunio FUKUYAMA ◽  
Takahito INOUE ◽  
Koichi KAJIWARA ◽  
...  

2018 ◽  
Vol 14 (9) ◽  
pp. 155014771880062
Author(s):  
Baohua Shan ◽  
Wenting Yuan ◽  
Hai Wang ◽  
Zhanxuan Zuo

In lab or actual engineering, the traditional contact sensors are always destroyed with damage of structures or models, and this leads to the failure of entire dynamic measurement. To deal with this issue, this article proposes a three-dimensional displacement measurement approach based on the parallel stereovision model. This approach combines the efficient large-scale stereo matching algorithm and the digital image correlation approach to obtain three-dimensional displacement of structural vibration response. In this article, the digital image correlation method is employed to match sequential images of left and right cameras, and the efficient large-scale stereo algorithm is used to obtain the disparity between the left and right images at each moment. Based on the parallel stereovision model, the three-dimensional coordinates of the measured point on the structural surface are achieved accordingly. A shaking table test of a three-story frame model under El Centro earthquake is performed in lab. Experimental results indicate that the displacement curves acquired by the linear variable differential transformers and the proposed method agree well, and this testifies the reliability and effectiveness of the presented approach. Only the presented stereovision approach attains the entire displacement curves of structural collapse when the model collapses, and this demonstrates the capability of the presented stereovision approach monitoring structural collapse.


Author(s):  
Yuka MATSUMOTO ◽  
Satoshi YAMADA ◽  
Ken OKADA ◽  
Masatoshi IDE ◽  
Toru TAKEUCHI ◽  
...  

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