文章摘要
引用本文:戴自航,沈蒲生.莫尔-库仑等面积圆屈服准则的简化形式及应用[J].福州大学学报(自然科学版),2003,31(4):454~459
莫尔-库仑等面积圆屈服准则的简化形式及应用
Simplified form and applications of Mohr - Coulomb equivalent area circle yield criterion
  修订日期:2002-03-26
DOI:10.7631/issn.1000-2243.2003.4.454
中文关键词: 边坡,应力空间,解析几何,屈服准则,有限元,滑动面
英文关键词: slope,stress space,analytic geometry,yield criterion,finite element,slip surface
基金项目:湖南省自然科学基金资助项目 (0 2JJY2 0 10 )
作者单位
戴自航,沈蒲生 1. 福州大学环境与资源学院,福建,福州,350002;湖南大学土木工程学院,湖南,长沙,410082
2. 湖南大学土木工程学院
,湖南,长沙,410082 
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中文摘要:
      在三维应力空间 ,采用解析几何的方法 ,导出了莫尔 -库仑等面积圆屈服准则的简化形式 .介绍了可直接利用现有大型有限元程序在德鲁克 -普拉格屈服准则下 ,按强度折减原理求解边坡安全系数的方法 .算例表明 ,采用简化屈服准则无须修改现有程序 ,且对简单边坡 ,据此求得的安全系数与传统的极限平衡法所得结果极为相近 ;对于复合边坡 ,二者求得的安全系数相对较差可能稍大些 .
英文摘要:
      In 3-D stress space, simplified form of Mohr-Coulomb equivalent area circle yield criterion is derived by adopting analytic geometry method. Directly using the existing finite element programs with Drucker-Prager yield criterion to analyze the stability of slopes according to strength reduction principle is presented. Examples show there is no need to revise the existing programs by using the simplified yield criterion. And for simple slopes, the safety factors obtained by FEM are fairly close to the results of conventional limit equilibrium method. For composite slopes, although the difference between the safety factors obtained by the two methods may be a bit larger.
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