Macro-response of rock mechanics behavior affected by its micro-parameters
文献类型：会议论文
| 作者 | Yin, Xiaotao; Ge, Xiurun; Li, Chunguang; Wang, Shuilin |
| 出版日期 | 2011 |
| 会议日期 | OCT 10-12, 2010 |
| 会议地点 | Shanghai, PEOPLES R CHINA |
| 关键词 | particle flow code virtual test micro-parameter macro-response |
| 页码 | 659-666 |
| 英文摘要 | Micro-parameters of rock and soil material are hard to determine with present technology. But their unique physical & mechanics characteristics and failure mechanism are controlled by them, heterogeneity and micro-structure. So, virtual uniaxial compression tests of rock are done by means of inner fish language in particle flow code. Four different kinds of computing scheme such as friction coefficient, contact radius multiplier, elastic modulus and micro-strength between material particles based on these numerical models are designed. And each kind of computing scheme contains three calculating conditions of great, medium and less, total conditions being twelve, aiming to study relation between micro-mechanics-parameters and macro-mechanics response of the rock and soil material. Found that the former three parameters can result in enhancement of material's modulus and strength, but micro-strength only increases macro-strength, that friction dominates post-peak strength of material, this friction effect is done after the micro-crack produced by micro-cohesion being overcome and under slipping condition. So the micro-cohesion only results in macro-strength change, but micro-friction-coefficient can cause changes in strength and deformation feature. Contact radius multiplier determines cohesion strength and contact area of particles and elastic modulus dominates slipping strain of particles, so these two micro-factors can cause changes in strength and deformation. All these illustrate the relation is the one between part and whole. Features of assembly are large than particles, whose relation is not simply summation. |
| 源文献作者 | Jiang, MJ ; Liu, F ; Bolton, M |
| 会议录 | GEOMECHANICS AND GEOTECHNICS: FROM MICRO TO MACRO, VOLS 1 AND 2
 |
| 会议录出版者 | CRC PRESS-TAYLOR & FRANCIS GROUP |
| 会议录出版地 | BOCA RATON |
| 语种 | 英语 |
| WOS研究方向 | Engineering |
| WOS记录号 | WOS:000291373800102 |
| 源URL | [http://119.78.100.198/handle/2S6PX9GI/4602]  |
| 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 | Chinese Acad Sci, State Key Lab Geomech & Geotech Engn, Inst Rock & Soil Mech |
| 推荐引用方式 GB/T 7714 | Yin, Xiaotao,Ge, Xiurun,Li, Chunguang,et al. Macro-response of rock mechanics behavior affected by its micro-parameters[C]. 见:. Shanghai, PEOPLES R CHINA. OCT 10-12, 2010. |
入库方式： OAI收割
来源：武汉岩土力学研究所
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