东湖水库非均质土坝渗流场与应力场耦合分析  被引量:3

The coupling analysis of seepage field and stress field of the non-uniform earth dam in Donghu Reservior

在线阅读下载全文

作  者:周建国[1] 李淼[2] 郭雪莽[3] 

机构地区:[1]中南勘测设计研究院,湖南长沙410014 [2]长沙理工大学,湖南长沙410076 [3]浙江水利水电专科学校,浙江杭州310018

出  处:《水利电力机械》2007年第3期28-30,34,共4页Water Conservancy & Electric Power Machinery

摘  要:根据某平原水库的蓄水过程和地质、结构特点,建立了渗流场与应力场耦合计算模型,采用有限元方法进行了稳定渗流场和应力场的耦合计算。计算分析表明,考虑耦合作用之后,土体渗透系数平均降低10%左右;位移和应力都有不同程度的提高,其中最大竖向位移由0.356 m增加到0.41 m,最大第1主应力σ1和最大第3主应力σ3分别增加了3.5%和2.5%。因此,虑渗流场和应力场耦合作用所得的计算结果对土坝稳定安全性不利。According to the characters of the process of the reservoir impoundment, geology and structures of a plain reservoir, the mathematical model of soil seepage field coupling with stress field is built, and the coupling of permanent seepage field and stress field is calculated with finite element method. The calculation results with considering coupling effect of stress and seepage show that the coefficient of soil permeability reduces by 10% on an average, the value of max vertical displacement increases from 0. 356m to 0.41 m and that the value of max principal stress σ1 and max principal stress σ3 increase by 3.5 % and 2.5 % respectively. The results make it known that the security of earth dam stability is reduced when the coupling effect is considered.

关 键 词:土石坝 渗流场 渗透系数 应力场 孔隙率 耦合分析 

分 类 号:TV139.14[水利工程—水力学及河流动力学] TV641.2

 

参考文献:

正在载入数据...

 

二级参考文献:

正在载入数据...

 

耦合文献:

正在载入数据...

 

引证文献:

正在载入数据...

 

二级引证文献:

正在载入数据...

 

同被引文献:

正在载入数据...

 

相关期刊文献:

正在载入数据...

相关的主题
相关的作者对象
相关的机构对象