Micromechanical Simulation of Fines Content Effect of Soils Using the Discrete Element Method

doi:10.1007/978-981-10-1926-5_84

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	Micromechanical Simulation of Fines Content Effect of Soils Using the Discrete Element Method
	Zhang Chao 1; Wu Shangwei 2; Yang Chunhe 1,2; Liu Haiming 3
	2017
会议日期	AUG 01-04, 2016
会议地点	Dalian Univ Technol, Dalian, PEOPLES R CHINA
卷号	188
DOI	10.1007/978-981-10-1926-5_84
页码	811-820
英文摘要	A micromechanical simulation is carried out to study the effect of the fines content on the mechanical property of sand-silt-clay mixed soils by using the Discrete Element Method. Biaxial compression experiments of sand-silt-clay mixed soils with different particle compositions are simulated. Particles with different mechanical properties and dimensions are used to investigate mechanical responses of the sand grains, silt grains and clay grains respectively during the biaxial compressions. Numerical results indicate that stress-strain curve transfers from strain softening to strain hardening with the increase of fines contents, and is affected by the force and displacement between adjacent particles. If the threshold of fines content is exceeded, the initial elastic modulus of mixed soils is changed with fines content. The fine-grained soils have larger number and better uniformity of force chains than that the coarse-grained have. The advantage of numerical simulation is that some microscopic factors influencing macro mechanical properties can be observed in the numerical simulations, which are difficult to achieve in the experiments.
源文献作者	State Key Lab Struct Anal Ind Equipment, Beijing Hi Key Tech Co Ltd
会议录	PROCEEDINGS OF THE 7TH INTERNATIONAL CONFERENCE ON DISCRETE ELEMENT METHODS
会议录出版者	SPRINGER-VERLAG SINGAPORE PTE LTD
会议录出版地	SINGAPORE
语种	英语
WOS研究方向	Physics
WOS记录号	WOS:000416515400084
内容类型	会议论文
源URL	[http://119.78.100.198/handle/2S6PX9GI/4923]
专题	岩土力学所知识全产出_会议论文国家重点实验室知识产出_会议论文
作者单位	1.Chinese Acad Sci, Inst Rock & Soil Mech, State Key Lab Geomech & Geotech Engn ; 2.Chongqing Univ, State & Local Joint Engn Lab Methane Drainage Com ; 3.Kunming Univ Sci & Technol
推荐引用方式 GB/T 7714	Zhang Chao,Wu Shangwei,Yang Chunhe,et al. Micromechanical Simulation of Fines Content Effect of Soils Using the Discrete Element Method[C]. 见:. Dalian Univ Technol, Dalian, PEOPLES R CHINA. AUG 01-04, 2016.