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Considering this point, several typical structural experiments are introduced and analyzed in this paper to study the earthquake output accuracy of the large-scale shake table test, such as ...
Oct 26, 2016 Shaking Table A computer controlled servo hydraulic uniaxial horizontal shaking table facility has been used in simulating horizontal seismic action, associated with seismic or any other vibration conditions. The shaking table has a loading platform of 1 m 1 m size and the payload capacity is 1 ton.
Since the aim of the shaking table test is to investigate the seismic behavior of the original structure subjected to different intensity of earthquakes, including failure mode and mechanisms, it is necessary to use the same materials as the prototype building.
Nov 01, 2020 The tests were conducted at the shaking table test laboratory of Shanghai Jiao Tong University SJTU, China. There are four independent shaking tables 2 m 2 m, which can be used individually or combined into various table arrays based on experimental requirements. Each shaking table has two translational degrees of freedom.
Jan 31, 2013 SUMMARY In order to investigate the seismic failure characteristics of a structure on the liquefiable ground, a series of shaking table tests were conducted based on a plaster model of a threestory and threespan subway station. The dynamic responses of the structure and ground soil under main shock and aftershock ground motions were studied.
Dec 16, 2017 In order to investigate the seismic response of steep bedding and toppling rock slopes, a large-scale shaking table test was performed taking into consideration a variety of factors such as slope type and input seismic excitation. Diverse seismic responses, including acceleration and earth pressure at several locations, were analyzed in terms of the test results.
The technical parameters of the shaking table and the similarity ratios of the models for the tests are listed in Table 1 and Table 2. Each of the pier models is fixed in a rectangular steel tank with a dimension of 2 m 3 m 2 m in the test, in water with depth of 1.1 m and 1.6 m for concrete model, and 0.9 m and 1.5
Sep 01, 2019 According to the purpose of the 1g shaking table test of the prefabricated subway station, the seismic response characteristics of the assembled station structure are mainly studied, However, considering the time effect factors such as shaking table performance, seismic wave characteristics and soilstructure interaction, the model soil similarity ratio is used to
Introduction to the activity, including how scientists use large scale, controllable platforms to test seismic failure of building structures. The largest seismic testing platforms are typically found in earthquake prone areas like Japan, China and California. Check out some videos of real life examples at this YouTube shake table playlist.
WEGAI specializes in qualification of all types of electrical and mechanical equipment by seismic testing and have overseen shake table tests in laboratories throughout North America, Europe, and Asia click here for lab affiliates.Bill started his career in the mid 70s with ANCO Engineers, a company specializing in development of vibration testing equipment and testing services.
Proceedings of the Ninth Pacific Conference on Earthquake Engineering Building an Earthquake-Resilient Society 14-16 April, 2011, Auckland, New Zealand Paper Number 126 Seismic retrofit and shaking table test of medical equipment in a hospital J.-F. Chai amp F.-R. Lin National Center for Research on Earthquake Engineering, Taipei, Taiwan
Nov 25, 2004 A new shaking table apparatus has been set up in the laboratory EUROLAB-CERISI of the University of Messina Italy, consisting of a shaking table, a large laminar box and an automated system for ...
Sep 02, 2016 Rammed-earth dwellings are widely used in rural areas worldwide with poor mechanical properties and weak seismic resistance, these structures are vulnerable to earthquakes. This study presents a method for reinforcing existing rammed-earth buildings by strengthening the walls with externally bonded fibers. Shaking table tests were conducted to study the seismic
Figure 2. Configuration of shaking table Test 1.15 The model was subjected to a series of seismic events including sine sweeps and earthquake records. A scaled version amax 0.20g of the motion recorded at Yerba Buena Island during the Loma Prieta earthquake was used as the shaking table command signal for the test analyzed herein.
Mar 27, 2020 The shaking table test has often been adopted to study the seismic response of underground structures. For instance, Jiang et al. 11, 12 carried out a series of shaking table tests to identify the seismic behaviors of a small shallow tunnel under asymmetric load, and concluded that the peak seismic wave has much greater impact on the ...
Jan 31, 2013 In order to investigate the seismic failure characteristics of a structure on the liquefiable ground, a series of shaking table tests were conducted based on a plaster model of a threestory and threespan subway station. The dynamic responses of the structure and ground soil under main shock and aftershock ground motions were studied.
shaking table test on a 120 scale model based on LG tower was conducted to study seismic resistance of hybrid structures LU Xilin et.al. 2004. The influence of earthquake spectrum and intensity on the performance of hybrid structures was investigated. The earthquake response and damage characteristics were also studied.
The specimen is oscillated only in one horizontal direction. Earthquake excitation used in the shaking table test is 1940 El Centro NS component. The time scale is not changed but the input amplitude I.A. is selected at a wide range of intensities. Figure 2 shows pseudo velocity spectrum based on the acceleration measured on the shaking table.
As a result, shaking table test has been widely adopted to examine and evaluate the seismic properties of structures. In the E-Defense shaking table testing facility, Suzuki et al. 7 carried out a shaking table test with a cylindrical laminar shear soil box, and identified the factors affecting the pile stress distribution in the seismic process.
Sep 09, 2020 In order to experimentally explore the effectiveness of the isolator for seismic mitigation of the base-isolated structure, a complete laboratory investigation by shaking table tests is carried out. Two sets of recorded three-dimensional and artificial one-dimensional horizontal earthquake ground accelerations pertaining to hard and soft soil ...
The PEER Earthquake Shaking Table, dedicated in 1972, was the first of its kind and at 20 x 20 is still the largest multidirectional shaking table in the US. The shaking table is configured to produce three translational components of motion vertical and two horizontal, plus three rotational components pitch, roll and yaw.
rock slope to seismic waves. Shaking table tests have been widely adopted in studies on slope responses to seismic waves Yang et al., 2002 Ling et al., 2005 Lin and Wang, 2006 Wang and Lin, 2011. Shi-mizu et al. 1986 conducted three kinds of two-dimensional model tests to investigate the dynamic failure modes of rock slopes.
in accordance with the Iranian seismic code, and tested on the shaking table of the Earthquake Engineering Research Center at Sharif University of Technology EERC-Sharif. TEST SETUP Figure 1 shows the single-storey large-scale unrein-forced con ned brick masonry building that was con-structed on the shaking table of EERC-Sharif 15.
VIBRATION amp SHAKE TABLES. Single- amp multi-degree-of-freedom servohydraulic vibration testing systems. These sysetms typically offer longer stroke and better low-frequency test performance than any electrodynamic shaker system.
Jan 01, 2017 3. Shaking Table Tests of the Museum Model Structure 3.1. Shaking Table Facility. The shaking table tests were conducted in the State Key Laboratory for Disaster Reduction in Civil Engineering at Tongji University. The shaking table used in this test has a table dimension of 4 m by 4 m, and the maximum payload is 250 kN.
structural seismic testing technology, shaking table model test has played a more and more important role in the research of SSI. However, this kind of test is rather difficult because of its complexity. This paper presents the shaking table model tests with the dynamic SSI system in detail, including similitude design of test
In this investigation shaking table and finite element software employed for evaluating of embankment seismic stability behavior. The results of shaking table test shown in Tables 1 and 2 and Figures 3-5, and the results of modeling by finite element software in Figures 6-9 have been mentioned. In the shaking table test,
Shaking table test for estimating the effects of seismic loading on the mobility of rockfall. 51st US Rock Mechanics Geomechanics Symposium 2017. American Rock Mechanics Association ARMA, 2017. pp. 2890-2894 51st US Rock Mechanics Geomechanics Symposium 2017.
The shaking table test and finite element method were used for simulation embankment model. In the shaking table test through the acceleration and pore pressure type of sensors and in the finite element software based on mathematical modeling, seismic behavior of embankment has been analyzed. The results clearly revealed that the embankment suffers collapse during
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