Results of a Class C Blind Prediction Competition on the Numerical Simulation of a Large-Scale Liquefaction Shaking Table Test

2020 ◽  
Author(s):  
Ramin Motamed ◽  
Milad Jahed Orang ◽  
Athul Parayancode ◽  
Ahmed Elgamal
Keyword(s):  
Numerical Simulation ◽  
Large Scale ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Blind Prediction ◽  
Class C

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

scholarly journals Seismic Response of a Bridge Pile Foundation during a Shaking Table Test

2019 ◽  
Vol 2019 ◽  
pp. 1-16 ◽  
Author(s):  
Yunxiu Dong ◽  
Zhongju Feng ◽  
Jingbin He ◽  
Huiyun Chen ◽  
Guan Jiang ◽  
...  
Keyword(s):  
Seismic Wave ◽  
Pile Foundation ◽  
Large Scale ◽  
Amplification Factor ◽  
Shaking Table Test ◽  
Seismic Intensity ◽  
Shaking Table ◽  
Acceleration Amplification ◽  
Bedrock Surface ◽  
Bridge Pile Foundation

Puqian Bridge is located in a quake-prone area in an 8-degree seismic fortification intensity zone, and the design of the peak ground motion is the highest grade worldwide. Nevertheless, the seismic design of the pile foundation has not been evaluated with regard to earthquake damage and the seismic issues of the pile foundation are particularly noticeable. We conducted a large-scale shaking table test (STT) to determine the dynamic characteristic of the bridge pile foundation. An artificial mass model was used to determine the mechanism of the bridge pile-soil interaction, and the peak ground acceleration range of 0.15 g–0.60 g (g is gravity acceleration) was selected as the input seismic intensity. The results indicated that the peak acceleration decreased from the top to the bottom of the bridge pile and the acceleration amplification factor decreased with the increase in seismic intensity. When the seismic intensity is greater than 0.50 g, the acceleration amplification factor at the top of the pile stabilizes at 1.32. The bedrock surface had a relatively small influence on the amplification of the seismic wave, whereas the overburden had a marked influence on the amplification of the seismic wave and filtering effect. Damage to the pile foundation was observed at 0.50 g seismic intensity. When the seismic intensity was greater than 0.50 g, the fundamental frequency of the pile foundation decreased slowly and tended to stabilize at 0.87 Hz. The bending moment was larger at the junction of the pile and cap, the soft-hard soil interface, and the bedrock surface, where cracks easily occurred. These positions should be focused on during the design of pile foundations in meizoseismal areas.

scholarly journals Research on Bending Rigidity at Flange Connections of UHV Composite Electrical Equipment

2020 ◽  
Vol 2020 ◽  
pp. 1-10
Author(s):  
Haibo Wang ◽  
Yongfeng Cheng ◽  
Zhicheng Lu ◽  
Zhubing Zhu ◽  
Shujun Zhang
Keyword(s):  
Numerical Simulation ◽  
Seismic Performance ◽  
Shaking Table Test ◽  
Effective Means ◽  
Electrical Equipment ◽  
Shaking Table ◽  
Calculation Formula ◽  
Test Results ◽  
Bending Rigidity ◽  
Earthquake Simulation

Pillar electrical equipment is an important part of substations. The application of composite materials in pillar equipment can facilitate the improvement of the seismic performance of electrical equipment. In this paper, the test of elastic modulus and bending rigidity was conducted for individual composite elements in insulators and arresters, and the calculation formula for bending rigidity at the composite flange cementing connections was put forward. The numerical simulation model for the earthquake simulation shaking table test of ±1,100 kV composite pillar insulators was established, in which the bending rigidity value for the flange cementing part was obtained by the test or calculation formula. The numerical simulation results were compared with the earthquake simulation shaking table test results, the dynamic characteristics and seismic response of the model were compared, respectively, the validity of the proposed calculation formula for flange bending rigidity of composite cementing parts was verified, and a convenient and effective means was provided for calculating the seismic performance of composite electrical equipment.

Design Implications of Large-Scale Shaking Table Test on Four-Story Reinforced Concrete Building

2015 ◽  
Vol 112 (2) ◽  
Author(s):  
T. Nagae ◽  
W. M. Ghannoum ◽  
J. Kwon ◽  
K. Tahara ◽  
K. Fukuyama ◽  
...  
Keyword(s):  
Reinforced Concrete ◽  
Large Scale ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Reinforced Concrete Building ◽  
Concrete Building
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