Modeling Seismic Slope Behavior Using Small Scale Shaking Table
Date Issued
2006
Date
2006
Author(s)
Cheng, Hsun-Tse
DOI
zh-TW
Abstract
Abstract
The Chi-Chi earthquake struck Taiwan in 1999. Causing many people dead and injured, buildings destroyed and also inducing numerous landslides . The pseudo static and sliding block analysis for seismic analysis slope usually involve many 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 and which has advantage of easy operation and specimen preparation.
The aim of this study is to take advantage of the convenience of the small shaking table to simulate and study the seismic slope behavior. The control factors such as slope angle and slope height have been changed during tests. The development of sliding initiated from the slope crest and moving toward the slope toe causing heave when the control factor is slope angle. As the control slope height increases , the slope became more unstable with ,and development of the failure obvious when the dynamic force is applied the specimen.
The images of model slope behavior were recorded during tests and image analysis using PIV is performed to tract the displacement vectors when landslide initiates. 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 according to the average height to two curves. The FLAC program was used to simulate the displacement vector and shear strain increment and the results good consistence with test results.
Subjects
振動台
動態行為
數值分析
shaking table
dynamic behavior
numerical analysis
Type
thesis
File(s)![Thumbnail Image]()
Loading...
Name
ntu-95-R93521115-1.pdf
Size
23.31 KB
Format
Adobe PDF
Checksum
(MD5):0e622d2b2e48b96e460b7d9f7b9f58e4