首页|基于残余位移增量判据的土石围堰边坡稳定性分析

基于残余位移增量判据的土石围堰边坡稳定性分析

扫码查看
原文链接
  • 万方数据
  • 维普
针对有限元强度折减法在复杂水文地质环境下土石围堰边坡稳定性评价中效果欠佳的问题,引入残余位移增量判据,基于有限元强度折减法,考虑深厚覆盖层土石围堰不同水位下的渗流特征,通过计算坡面节点平均残余位移增量,获取边坡稳定系数,进一步通过位移增量分布图,探讨了围堰边坡潜在滑面位置及其形成机制.结果表明,在复杂水文地质环境下的土石围堰边坡稳定性评价中,残余位移增量判据相较经典失稳判据适用性更强.研究结果能够为工程实践提供指导.
Stability Analysis of Earth-rockfill Cofferdam Slope Based on Average Residual Displacement Increment Criterion
The classical failure criteria of the finite element strength reduction method were not effective in a slope stability evaluation of an earth-rockfill cofferdam in a complex hydrogeological environment.Therefore,a new criterion,the average residual displacement increment criterion,was introduced.By considering the seepage characteristics at dif-ferent water levels,based on the finite element strength reduction method,the safety factors were acquired by calculating the average residual displacement increment of the grid points on a slope face.Furthermore,through a displacement in-crement distribution contour map,the location and the formation mechanism of the potential sliding surface were dis-cussed.The results show that the new criterion is more applicable than the other three classical failure criteria for an earth-rockfill cofferdam in a complex hydrogeological environment.The research results can guide engineering practice.

earth-rockfill cofferdam slopefinite element strength reduction methodaverage residual displacement increment criterionfailure criteria

孙士国、周鑫、彭是焱

展开 >

中国安能集团第三工程局有限公司成都分公司,四川 成都 611135

重庆交通大学水利水运工程教育部重点实验室,重庆 400074

土石围堰边坡 有限元强度折减法 残余位移增量判据 失稳判据

重庆市自然科学基金项目重庆市教委科学技术研究项目水利水运工程教育部重点实验室开放基金项目

cstc2021jcyjmsxmX0869KJ202200709SLK2021B09

2024

10.20040/j.cnki.1000-7709.2024.20230586

水电能源科学
中国水力发电工程学会 华中科技大学 武汉国测三联水电设备有限公司

水电能源科学

CSTPCD北大核心
影响因子：0.525
ISSN：1000-7709
年,卷(期)：2024.42(2)
  • 9