应用三维多重网格法的极限平衡法分析锦屏一级拱坝右岸坝坡稳定性

大坝与安全 ›› 2015 ›› Issue (4): 47-.

应用三维多重网格法的极限平衡法分析锦屏一级拱坝右岸坝坡稳定性

陈晨^1,2，陈平龙³，王文芬¹

1.江苏建筑职业技术学院，江苏徐州，221116；2.河海大学水利水电学院，江苏南京，210098；3.江苏省徐州市水利局，江苏徐州，221000

收稿日期:2015-01-13 修回日期:2015-03-15 出版日期:2015-08-08 发布日期:2015-08-08
作者简介:陈晨（1989- ），女，江苏徐州人，助教，主要从事水工结构安全监控研究。

Application of limit equilibrium method in slope stability analysis of Jinping Ⅰhigh arch dam based on 3-D multi-grid method

CHEN Chen, CHEN Ping-long and WANG Wen-fen

Jiangsu Jianzhu Institute

Received:2015-01-13 Revised:2015-03-15 Online:2015-08-08 Published:2015-08-08

摘要/Abstract

摘要： 对锦屏一级拱坝右岸坝肩采用非线性有限元分析方法，进行三维弹塑性数值模拟，通过使用多重网格法，在任意滑动面上（平面或曲面）对有限元应力计算结果进行转换，计算得到滑块体的安全系数。弹塑性计算结果表明，基本工况条件下，左岸坝肩的最小安全系数为4.88（大于3.5），出现在温降工况下1 740 m高程处；右岸坝肩的最小安全系数为3.41（小于3.5），出现在温升工况下1 710 m高程处。该结果表明对右岸坝肩采取一定的加固措施是有必要的。

关键词: 多重网格法, 锦屏一级高拱坝, 刚体极限平衡方法

Abstract: Based on nonlinear finite element analysis, 3-D elastic-plastic numerical simulation of Jinping Ⅰ high arch dam is developed. By multi-grid method, the stress result of FEM could transfer on any sliding surface (plane or surface), and the safety factors of sliding blocks could be obtained. The elastic-plastic calculation results indicate that the minimal safety factor of the left abutment under basic condition is 4.88 (larger than 3.5), which appears on the 1 740 m elevation under temperature drop condition, and the minimal safety factor of the right abutment under basic condition is 3.41 (less than 3.5), appearing on the 1 710 m elevation under temperature rise condition, which means it is necessary to take reinforcement measures for right abutment.

Key words: multi-grid method, Jinping Ⅰ high arch dam, rigid body limit equilibrium method

陈晨，陈平龙，王文芬. 应用三维多重网格法的极限平衡法分析锦屏一级拱坝右岸坝坡稳定性[J]. 大坝与安全, 2015, 0(4): 47-.

CHEN Chen, CHEN Ping-long and WANG Wen-fen. Application of limit equilibrium method in slope stability analysis of Jinping Ⅰhigh arch dam based on 3-D multi-grid method[J]. dam, 2015, 0(4): 47-.