Seismic Response of Flat Ground and Slope Models through 1 g Shaking Table Tests and Numerical Analysis

Yong Jin,Yonghee Lee,Hoyeon Kim,Haksung Kim,Daehyeon Kim

doi:10.3390/app11041875

Abstract

In order to verify the reliability of numerical analysis, a series of 1 g shaking table tests for flat ground and slope were conducted using a laminar shear box subjected to different seismic waves. Firstly, numerical analyses, using the DEEPSOIL and ABAQUS software, were done to compare the results of flat ground experiments. After that, finite element analyses with ABAQUS were conducted to compare the results of slope experiments. For numerical analyses, considering the influence of the boundary, the concept of adjusted elastic modulus was proposed to improve the simulation results. Based on the analyses, it is found that in terms of acceleration-time history and spectral acceleration, the numerical analysis results are in good agreement with the experiment results. This implies that numerical analysis can capture the dynamic behavior of soil under 1 g shaking table test conditions.

Highlights

Due to the randomness and uncertainty of earthquakes, it is necessary to conduct simulated earthquake experiments to understand the dynamic behavior of soil in controlled environments
1 g shaking table tests with either rigid soil boxes or laminar shear boxes have been widely used to understand the dynamic response of soil subjected to earthquake loading
The results showed that the developed laminar shear soil container was successful in simulating the soil boundary conditions

Summary

Introduction

Due to the randomness and uncertainty of earthquakes, it is necessary to conduct simulated earthquake experiments to understand the dynamic behavior of soil in controlled environments. As a number of theoretical and numerical analysis results have not been validated due to the complexity of soil, a controlled model test such as the 1 g shaking table test is very useful. 1 g shaking table tests with either rigid soil boxes or laminar shear boxes have been widely used to understand the dynamic response of soil subjected to earthquake loading. The laminar shear box is successful in simulating the soil boundary conditions [2]. The results showed that the developed laminar shear soil container was successful in simulating the soil boundary conditions. It is an ideal for the container to weaken the reflection and scattering effect of waves on the boundaries

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Methods

Conclusion