Three-Dimensional Elastic-Plastic Dynamic Interaction of Earth Dam and Intermountain Basin

Abstract:

A new method that based on an interface program and secondary development of the analysis software FLAC3D was used to present the elastic-plastic dynamic interaction of earth dam and intermountain basin in 3D. By this method, we developed a complex 3D numerical model for a typical earth dam which was damaged seriously in the Wenchuan earthquake, along with its surrounding sites, considering the pore water pressure and the hysteretic damping of the soils, inputting the revised ground motion obtained from the station near the dam. The simulation reappeared the dam disaster process, gave the spatial and temporal distribution of PGA (peak ground acceleration) and residual deformation and the ratio of vertical and horizontal PGA. Our data demonstrate the mechanisms of the landslides, collapses and cracks on the earth dams. The present work shows that the existence of the dam has a significant influence on the distribution of ground motion in the intermountain basin.

• Periodical: Applied Mechanics and Materials (Volumes 166-169)
• Pages: 2383-2390
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.166-169.2383
• Online since: May 2012
• Authors: Yong Qiang Li, Li Ping Jing, Hai An Liang, Chun Hui Liu, Yan Zou
• Keywords: Earth Dam, Ground Motion, Intermountain Basin, Seismic Response Analysis, Spatial and Temporal Distribution, Three-Dimensional Model

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