| LI Lin,TAO Xiong,SHANG Kaiwei.强度折减法在节理岩质边坡稳定分析中的精度研究Journal of Water Resources and Water Engineering[J].,2011,22(5): |
| 强度折减法在节理岩质边坡稳定分析中的精度研究 |
| Research on precision of strength reduction method in stable analysis for rock slope |
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| DOI：10.11705/j.issn.1672-643X.2011.05.213 |
| 中文关键词: 节理岩质边坡 强度折减法 屈服准则 精度影响 |
| 英文关键词: jointed rock slope strength reduction method yield criterion precision influence |
| 基金项目: |
| Author Name | Affiliation | | LI Lin,TAO Xiong,SHANG Kaiwei | LI Lin1,TAO Xiong2,SHANG Kaiwei3(1.Jiangxi Provincial Water Conservancy Planning and Designing Institute,Nanchang 330029,China,2.Red River Hydroelectric Development Corporation of State Grid,Kunming 650021,3.HydroChina Chengdu Engineering Corporation,Chengdu 610072,China) |
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| 中文摘要: |
| 采用有限元强度折减法分析节理岩质边坡的稳定性时,计算精度会受到许多因素(如屈服准则、岩体力学参数、计算网格等)的影响.本文结合算例分析这些因素对强度折减法计算精度的影响.分析结果表明:采用强度折减法分析贯通节理岩质边坡的稳定性时,在关联流动法则下,宜选用Mohr - Coulomb内切圆准则；在非关联流动法则下,宜选用Mohr - Coulomb匹配DP圆准则.此外,当采用Mohr - Coulomb内切圆准则时,可不考虑弹性模量和泊松比对计算结果的影响,并且在单元较少时,就可以得到较为理想的结果. |
| 英文摘要: |
| As carrying on stability analysis of jointed rock slope by the finite element strength reduction,the calculation accuracy is affected by a lot of factors such as yield criterion,rock mechanics parameters,computation net and so on.According to the study of these factors,the analysis results demonstrated that Mohr-Coulomb inscribed circle criteria is a appropriate choice under the associated flow rule;and under the non-associated flow rule,matched DP Mohr-Coulomb criteria is suitable.In ddition,if the former ... |
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