Shake table testing of an actual 65 kW wind turbine (Figure 1) was performed at the University of California, San Diego (UCSD) using the NEES Large High Performance Outdoor Shake Table (LHPOST). 14 Being the largest outdoor shake table designed to impart uniaxial horizontal excitation, the LHPOST was the only test facility in the world …
This paper presents the results of extensive shake table testing and finite element analyses of a small-scale, 1.5-meter-tall shaking table specimen that was designed and scaled to experimentally capture the higher-mode effects of a 125-meter-tall reference tall building.
Section snippets Model soil box. For the study of the shaking table test considering SSI, the model soil was loaded in a finite size container due to the limitations of the shaking table size and the load capacity, which often make errors because of the "model box effect" (different dynamic results caused by the reflection of waves at the …
This paper presents the effects of a single surface slope on seismic ground responses and exhibits the peak horizontal acceleration (PGA h) distribution regulations in the slope cross-section under vertically impinging SV wave excitation.The seismic response of a homogeneous slope was investigated through a series of shaking table tests, and …
In the absence of intensive tests on the cable-stayed bridges under non-uniform excitation, this study provides a practical and accurate approach to investigate the seismic response of cable-stayed bridges considering spatially varying earthquake inputs. The cable-stayed bridge model with a scale ratio of 1:120 was designed and tested on a …
The effects of several variables on the performance of a shaking table have been investigated on a laboratory-scale table using a synthetic mixture to represent a typical industrial ...
2. Objective of the Shake Table WebLab The Shake Table WebLab presents an online laborator y that is both interactive and heavily reliant on accelerometer sensor readings. U sing the Shake Table WebLab, students can excite a two-story, 3ft tall structure by vibrating its base while simultaneously monitoring its
Regarding the influence of boundary effects between the lining structure and the box inner steel plate, the experimental campaign on the shaking table described by 53 was used as an example. The physical models were constructed in a 0.8 m × 1.78 m × 1.20 m container made from rigid, transparent Plexiglass sheets and installed on a 1.2 m × 1. ...
This article establishes a series of novel analytical models to investigate the control–structure interaction effects between double shaking tables and test structure. …
CSI effects on single shaking table. The CSI effects on single shaking table is investigated in frequency domain and time domain respectively. The earthquake ground motion records, El Centro-NS records with peak ground acceleration of 342.00 cm / s 2, is 3 times compressed and thereby forms reference signal in the time domain study.
The work at hand reports on experimental results from a novel shaking table testing programme conducted on a physical model of an Integral Abutment Bridge (IAB) to investigate SSI effects between the bridge, the abutment, the backfill and the pile foundation, in presence/absence of compressive inclusions placed between the …
In this paper, the further analysis of the interaction effects on system performance of the dual shaking tables with specimen was carried out, and force feedback compensation …
Shaking table tests of structures supported by pile groups were performed to reveal the seismic response of pile-soil-superstructure system by comparing with quartz sand site. Moreover, the effects of pile number and shaking intensity on the dynamic characteristics were analyzed. The results show that the liquefaction of coral sand site is …
Interaction effects between shaking table and structure are first studied by analysing the response of a two DOF (degree of freedom) oscillator with mechanical properties representative of the actuator-table-structure system. A single DOF viscoelastic oscillator representing the structural test specimen is then included in the analytical model ...
To assess the possible boundary effect due to the use of a rigid soil container, a large-scale shaking table test was simulated in which the Dafalias model was applied with the model parameters calibrated by the PSO method for the HN31 sand in a medium-dense state (I Dmat = 0.50). The "Nine Four Node Quad u-p" element of …
Interaction effects between shaking table and structure are first studied by analysing the response of a two DOF (degree of freedom) oscillator with mechanical properties …
To study the interaction mechanism of shaking table-test structure in shaking table test, an analytical model of shaking table array-test structure was established. Based on the analytical model, the influence of structure damping, frequency, and shaking table output on the accuracy of shaking table test was analysed. The …
At the structure frequency and its surrounding frequency bands, the amplitude–frequency characteristic of shaking table is amplified 5.26 times, and the …
According to the purpose of the 1 − g 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 soil–structure interaction, the model soil ...
The 1g shaking table test is the most popular method for physical modeling, which is carried out to determine the dynamic response of the physical model and to validate numerical approaches [26,27]. ... The research results indicate that the effect of the connection mode between the sidewall and the diaphragm wall on the damage evolution …
A shaking table test of a 1/60 scale cross-fault bridge model considering the effects of soil–bridge interactions was designed and implemented, in which the bridge model was placed in two individual soil boxes to simulate the bridge across a strike-slip fault. Three seismic ground motion time-histories with permanent displacements were …
A series of 1g shaking table tests were performed to investigate the response of Tabriz subway tunnel, a circle-type tunnels embedded in dry sand, under sinusoidal excitation. Effects of various parameters, including peak ground acceleration and frequency content of input motion on the behavior of tunnel was investigated.
Shaking table separation is suitable for separation of fine particle materials and is widely used for separation of tungsten, tin, tantalum, niobium, and other rare …
This shaking table model test uses the large-scale earthquake simulation shaking table of the Lanzhou Seismological Research Institute of Gansu Seismological Bureau. The size of the vibrating table is 4 m × 6 m, the maximum bearing capacity is 25 t, the maximum acceleration is 1.7 g, the maximum speed is 1.5 m/s, and the maximum …
In this paper, a series of 1g shaking table tests were conducted to investigate the dynamic response of the valley topography effect on a nearby subway station. The similitude ratio was designed for the test to replicate the soil-structure interaction based on the consistency principal of the structure-soil flexibility ratio …
The largest shake table experiment ever conducted shook this full-size seven-story condominium built at the Japanese National Research Institute for Earth Science and Disaster Prevention's Earth-Defense facility ("E-Defense") in 2009. ... because the effects of earthquake shaking on buildings and structures don't always scale with …
The shaking table is an old and reliable technique widely used in the mining and recycling industry. The shaking table, also known as gravity separation, has different relative movements against gravitational forces, depending on factors such as weight, particle size, and shape by taking advantage of the density differences between mineral …
For instance, Tokimatsu et al. (2007) conducted a shaking table test using E-defense, one of the largest shaking table test devices in the world, to estimate the effects of dynamic interaction among soils, pile foundation and superstructure.
This study conducted seven sets of shaking table tests incorporating complex terrains. The SCI effects induced by different terrains, building frequencies, building configurations, and input motions were investigated. Based on the test results, the reliability of a previously proposed numerical coupling scheme was validated.
A series of shaking table tests were conducted in this study to investigate the effects of the groundwater level on the seismic response of underground structures in coral sand. The dynamic responses, such as the pore water pressure, acceleration, soil pressure, strain and settlement are tested and analyzed for four different groundwater …
A series of shaking table tests of a three-storey steel frame with the particle damper system were carried out to evaluate the performance of the system and to verify the analysis method. An analytical solution based on the discrete element method is …
We performed shaking table tests to investigate the effect of both horizontal pulse-like motion and vertical component on dynamic response of slope. Both unidirectional (i.e., …
