scholarly journals STUDY ON SEISMIC PERFORMANCE OF R/C WALL-FRAME STRUCTURES BASED ON LARGE-SCALE SHAKING TABLE TEST

2008 ◽  
Vol 73 (623) ◽  
pp. 95-101 ◽  
Author(s):  
Taizo MATSUMORI ◽  
Kazutaka SHIRAI ◽  
Toshimi KABEYASAWA
Keyword(s):  
Seismic Performance ◽  
Large Scale ◽  
Shaking Table Test ◽  
Shaking Table ◽  
Frame Structures

scholarly journals Seismic Performance of Substrate for Vegetation Concrete from Large-Scale Shaking Table Test

2020 ◽  
Vol 2020 ◽  
pp. 1-15
Author(s):  
Honglue Qu ◽  
Chenxu Wang ◽  
Xiaole Huang ◽  
Yu Ding ◽  
Xue Huang
Keyword(s):  
Ecological Restoration ◽  
Seismic Performance ◽  
Large Scale ◽  
Shaking Table Test ◽  
Failure Process ◽  
Time History ◽  
Reference Value ◽  
Shaking Table ◽  
Substrate Layer ◽  
New Type

The substrate for vegetation concrete is a new type of plant substrate used for slope protection. While it has demonstrated good performance in slope protection and a greening effect, the sustainability of ecological restoration projects is difficult and there are significant construction risks in areas with frequent earthquakes. In this study, a new type of substrate for vegetation concrete was developed for areas with frequent earthquakes, and a shaking table test was performed to evaluate the seismic performance. The test results indicated that the proposed substrate of the vegetation concrete displayed good stability under seismic excitation at earthquake intensities of V, VI, VII, and VIII. A comparison of several different reinforcement methods under seismic conditions indicated that wavy laying of a flexible net was the best reinforcement method. Through observation of the displacement time history curve and macroscopic phenomenon, the failure process of the substrate layer was obtained and consisted of the following three stages: cracking between substrate layer and bedrock, internal cracking of the substrate layer, and vibration crushing. Ultimately, the research results have significant reference value for ecological restoration projects using substrates for vegetation concrete in areas with frequent earthquakes.

Shaking Table Test on Seismic Performance of Ceiling without Braces and Artificial Spacing to Surrounding Object

2015 ◽  
Vol 104 (1) ◽  
pp. 1-8
Author(s):  
Kenichi Tahara ◽  
Yasuhito Sasaki ◽  
Yukihiro Sato ◽  
Satoshi Sasaki ◽  
Shojiro Motoyui
Keyword(s):  
Seismic Performance ◽  
Shaking Table Test ◽  
Shaking Table

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>

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.

scholarly journals Shaking Table Model Test and Seismic Performance Analysis of a High-Rise RC Shear Wall Structure

2019 ◽  
Vol 2019 ◽  
pp. 1-17 ◽  
Author(s):  
Shujin Li ◽  
Cai Wu ◽  
Fan Kong
Keyword(s):  
Seismic Performance ◽  
Model Test ◽  
Shaking Table Test ◽  
Technical Specification ◽  
Shaking Table ◽  
Scale Model ◽  
Wall Structure ◽  
High Rise ◽  
Table Model ◽  
Shaking Table Model Test

A building developed by Wuhan Shimao Group in Wuhan, China, is a high-rise residence with 56 stories near the Yangtze River. The building is a reinforced concrete structure, featuring with a nonregular T-type plane and a height 179.6 m, which is out of the restrictions specified by the China Technical Specification for Concrete Structures of Tall Building (JGJ3-2010). To investigate its seismic performance, a shaking table test with a 1/30 scale model is carried out in Structural Laboratory in Wuhan University of Technology. The dynamic characteristics and the responses of the model subject to different seismic intensities are investigated via the analyzing of shaking table test data and the observed cracking pattern of the scaled model. Finite element analysis of the shaking table model is also established, and the results are coincident well with the test. An autoregressive method is also presented to identify the damage of the structure after suffering from different waves, and the results coincide well with the test and numerical simulation. The shaking table model test, numerical analysis, and damage identification prove that this building is well designed and can be safely put into use. Suggestions and measures to improve the seismic performance of structures are also presented.

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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