Three-dimensional numerical simulation of utility tunnel for large-scale shaking table test

2011 ◽  
Author(s):  
Qingxia Yue
Keyword(s):  
Numerical Simulation ◽  
Large Scale ◽  
Shaking Table Test ◽  
Three Dimensional ◽  
Shaking Table ◽  
Utility Tunnel

scholarly journals A parallel stereovision method used for monitoring the collapse of a three-story frame model subjected to seismic loading

2018 ◽  
Vol 14 (9) ◽  
pp. 155014771880062
Author(s):  
Baohua Shan ◽  
Wenting Yuan ◽  
Hai Wang ◽  
Zhanxuan Zuo
Keyword(s):  
Digital Image Correlation ◽  
Digital Image ◽  
Large Scale ◽  
Shaking Table Test ◽  
Three Dimensional ◽  
Shaking Table ◽  
Image Correlation ◽  
Structural Collapse ◽  
Frame Model ◽  
Left And Right

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.

Numerical Simulation of Shaking Table Test of Tianjin Transportation Junction

2012 ◽  
Vol 256-259 ◽  
pp. 2142-2147
Author(s):  
Xin Liang Jiang ◽  
Xin Liu Wu
Keyword(s):  
Numerical Simulation ◽  
Large Scale ◽  
Shaking Table Test ◽  
Complex Structure ◽  
Shaking Table ◽  
3D Fem ◽  
Fem Model ◽  
Small Earthquake ◽  
Testing Data ◽  
Soil Complex

A shaking table test of large-scale pile-soil-complex structure interaction is accomplished on the transport hub of Tianjin station, and some reliable testing data of soil-structure dynamic interaction laws are acquired. ANSYS is used to simulate the process of the test, including establishment of 3D FEM model, selections of material parameters and constitutive, treatment of boundary conditions. Comparative analysis is performed between simulation data and testing data. The results show that: the simulative results agree well with the experimental ones under small earthquake, but the deviation increases when it suffers medium earthquake. The rationality of the numerical simulation and test are verified by each other, and the causes of the deviation under medium earthquake are analyzed.

scholarly journals DEVELOPMENT OF A HIGH-SPEED VIDEOGRAMMETRIC MEASUREMENT SYSTEM WITH APPLICATION IN LARGE-SCALE SHAKING TABLE TEST

2019 ◽  
Vol IV-2/W7 ◽  
pp. 33-38
Author(s):  
S. Gao ◽  
Z. Ye ◽  
C. Wei ◽  
X. Liu ◽  
X. Tong
Keyword(s):  
Data Processing ◽  
Measurement System ◽  
High Speed ◽  
Large Scale ◽  
Moving Objects ◽  
Shaking Table Test ◽  
Image Sequences ◽  
Shaking Table ◽  
Dynamic Monitoring ◽  
Observation Network

<p><strong>Abstract.</strong> The high-speed videogrammetric measurement system, which provides a convenient way to capture three-dimensional (3D) dynamic response of moving objects, has been widely used in various applications due to its remarkable advantages including non-contact, flexibility and high precision. This paper presents a distributed high-speed videogrammetric measurement system suitable for monitoring of large-scale structures. The overall framework consists of hardware and software two parts, namely observation network construction and data processing. The core component of the observation network is high-speed cameras to provide multiview image sequences. The data processing part automatically obtains the 3D structural deformations of the key points from the captured image sequences. A distributed parallel processing framework is adopted to speed up the image sequence processing. An empirical experiment was conducted to measure the dynamics of a double-tube five-layer building structure on the shaking table using the presented videogrammetric measurement system. Compared with the high-accuracy total station measurement, the presented system can achieve a sub-millimeter level of coordinates discrepancy. The 3D deformation results demonstrate the potential of the non-contact high-speed videogrammetric measurement system in dynamic monitoring of large-scale shake table tests.</p>

Shaking table test and numerical simulation of an isolated cylindrical latticed shell under multiple-support excitations

2019 ◽  
Vol 18 (3) ◽  
pp. 611-630 ◽  
Author(s):  
Xue Suduo ◽  
Shan Mingyue ◽  
Li Xiongyan ◽  
Liang Shuanzhu ◽  
Huang Fuyun ◽  
...  
Keyword(s):  
Numerical Simulation ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Multiple Support
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