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《Technology for Earthquake Disaster Prevention》 2013-02
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The Freeze-thaw Cycling Effects on Slope Stability in Earthquake

Wang Wenli 1,2),Wang Lanmin 1,2) and Zheng Long 1) 1)Lanzhou Institute of Seismology,China EarthquakeAdministration,Lanzhou 730000,China 2)School of Civil Engineering and Mechanics,Lanzhou University,Lanzhou 730000,China  
In seasonal and permanent permafrost region,the soil mechanical properties may be changed considerably in construction work,which is potentially threat to the stability of infrastructure during earthquakes.This paper develops an analysis platform for the slope earthquake stability considering freeze-thaw cycling based on FLAC.The platform embedded an explicit specific heat algorithm to reflect the ice-water phase change effect.The effects of freeze-thaw cycling on slope earthquake stability are analyzed.The results indicate that the range of active layer is a main factor influencing the plastic destroying form.
【Fund】: 中国地震局兰州地震研究所地震科技发展青年基金“2011Q05”资助
【CateGory Index】: TU435
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