Study on Seismic Slope Behavior Using Small Scale Shaking Table
Date Issued
2007
Date
2007
Author(s)
Lin, Jing-Han
DOI
zh-TW
Abstract
The Chi-Chi earthquake struck Taiwan in 1999 which induced numerous landslides.Using pseudo static and sliding block analysis for seismic slope analysis usually involve simplitied assumptions. In order to understand the behavior of slope subjected to earthquake, Wang (2003) used large shaking table to perform large scale model slope test in NCREE to observe the dynamic behavior of slope. The small shaking table was developed in laboratory in 2004 to facilitate the laboratory slope model test with the advantage of easy operation and specimen preparation.
The aim of this study is to take advantage of the small shaking table to simulate and study the seismic slope behavior. The control factors such as slope height and slope angle have been changed during tests. The development of sliding initiated from the slope crest and moved toward the toe causing heave when the slope angle. Varies as the slope height increases , the slope became more unstable with rapid development of failure.
The images of model slope behavior were recorded during tests and image analysis where performed using PIV to tract the displacement vectors when landslide initiated. The infrared rays were used to scan the surface of specimen, which measured the differences in geometry of specimen before and after test. The deformation of slope was measured based on the average height of two curves. The FLAC program was used to simulate displacements of the slopes in laboratory tests and a good agreement between the the results of numerical models and the measurements analyzed by PIV was achieved.
Subjects
振動台
PIV
FLAC
邊坡破壞
shaking table
slope failure
Type
thesis
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