摘要
为探讨不同雨型下土钉支护边坡的稳定性,以成都某边坡工程为背景,结合数字图像相关(DIC)技术和FLAC3D数值软件开展不同雨型下的土钉支护边坡室内模型试验及模拟。结果表明,土钉的存在可提升边坡稳定性,并改变了边坡的破坏模式。不同雨型下土钉支护边坡的破坏始于坡脚处面层开裂,并集中于降雨峰值阶段附近突发扩展,演变为局部牵引式破坏;后峰型降雨引发的边坡变形破坏最严重,支护结构受力最大,均匀型降雨与之相反。研究结果可为土钉支护边坡遭遇不同雨型时防护措施选择提供参考。
To investigate the stability of soil-nail supported slopes under different rainfall patterns,this study conduc-ted indoor model tests and numerical simulations using digital image correlation(DIC)technology and FLAC3D numerical software,taking a slope project in Chengdu as the case study.The results demonstrate that soil nails can enhance slope stability while modifying failure mechanisms.Under varying rainfall patterns,failure initiates with surface cracking at the slope toe,rapidly propagates near rainfall peak stages,and evolves into localized traction-type failure.Delayed rainfall patterns induced the most severe deformation and structural stress in slope-support systems,whereas uniform rainfall patterns exhibited opposite effects.These findings provide critical references for engineering practices of soil-nail rein-forced slopes encountering diverse rainfall regimes.
作者
朱家豪
陆烨
何鑫
ZHU Jia-hao;LU Ye;HE Xin(School of Mechanics and Engineering Sciences,Shanghai University,Shanghai 200444,China)
出处
《水电能源科学》
北大核心
2025年第12期94-98,共5页
Water Resources and Power
关键词
边坡
模型试验
土钉支护
数值模拟
DIC
slope
model test
soil nail supported
numerical simulation
DIC
