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http://dx.doi.org/10.7843/kgs.2008.24.8.35

Numerical Evaluation of Boundary Effects in the Laminar Shear Box System  

Kim, Jin-Man (Dept. of Civil Engrg., School of Civil and Environmental Engrg., Pusan National Univ.)
Ryu, Jeong-Ho (Dept. of Civil Engrg., Pusan National Univ.)
Publication Information
Journal of the Korean Geotechnical Society / v.24, no.8, 2008 , pp. 35-41 More about this Journal
Abstract
Laminar-shear-boxes are widely used to simulate free-field seismic ground response by using a l-g shaking table or geo centrifuge in geotechnical earthquake engineering. This study numerically modeled and compared the ground responses in the free field, rigid box, and laminar shear box by using a 3-D FEM program. It is found from the numerical simulations that the laminar shear box can simulate the free field ground movement more precisely than the rigid box. However, the laminar shear box underestimated the surface acceleration of the free field ground. It also showed low-frequency characteristics probably because the stiffness and inertia effect of surrounding ground are neglected.
Keywords
Boundary effect; Geo-centrifuge; Ground movement; Laminar shear box; Numerical modeling; Shaking table;
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