DYNAMIC CHARACTERISTICS OF SOILS SUBJECT TO IMPACT LOADINGS |
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| Authors: | Zhirong Niu Guoyun Lu Dongzuo Cheng |
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| Affiliation: | [1]College of Civil Engineering and Architecture, Jiaxing University, Jiaxing, Zhejiang, 314001, China [2]Institute of Application Mechanics, Taiyuan University of Technology, Shanxi, Taiyuan, 030024, China [3]Taiyuan University, Shanxi, Taiyuan, 030026, China |
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| Abstract: | The dynamic properties of soil under impact loads are studied experimentally and numerically.By analyzing the microstructural photos of soils with and without impact,it is shown that impact loads can destroy the original structures in the compact area,where the soil grains are rearranged regularly and form the compact whirlpool structure.Simultaneously,the dynamic impact process of soil is simulated by using the software of Ls-dyna.The time-dependent dis- tribution of the dynamic stress and density is obtained in the soil.Furthermore,the simulation results are consistent with the experimental results.The reinforcement mechanism and the rule of dynamic compaction of soils due to impact load are also elucidated. |
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| Keywords: | dynamic destruction impact soil dynamic consolidation |
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