长江科学院院报2016，Vol.33Issue(10)：93-97,101,6.DOI:10.11988/ckyyb.20150747
考虑预应力损失的锚索加固条件下边坡长期稳定性分析
A Method of Calculating the Long-term Stability of Slope Reinforced with Anchorage Cable in Consideration of Pre-stress Loss
摘要
Abstract
In actual project, slope’s long-term stability problem is caused by the loss of pre -stress of anchorage ca-ble acting on the slope due to the creep properties of geotechnical body .To correctly estimate the long-term stability of slope reinforced with pre-stressed anchorage cable, a limit equilibrium calculation method is proposed to analyze slope stability based on the assumption of stresses on the slip surface and by integrating the model of anchorage pre -stress loss.By using this method, the factor of safety of slope reinforced with pre-stressed anchorage cable in differ-ent periods are obtained, thus the dynamic change of slope stability can be reflected .By analyzing engineering ex-amples, the feasibility of the method is verified, and the notion that pre-stress loss of anchorage cable worsens the long-term stability of slope is proved.Moreover, parametric analysis on the influence of pre -stress loss of anchorage cable on slope’s long-term stability indicates that increasing the initial pre -stress of anchorage cable is reliable and effective to improving the long-term stability of slope.关键词
边坡/长期稳定性/锚索加固/预应力损失/安全系数Key words
slope/long-term stability/anchorage cable/pre-stress loss/factor of safety分类
建筑与水利引用本文复制引用
邓东平,李亮..考虑预应力损失的锚索加固条件下边坡长期稳定性分析[J].长江科学院院报,2016,33(10):93-97,101,6.基金项目
国家自然科学基金项目（51608541）；中国博士后科学基金面上项目（2015M580702）；中南大学博士后科学基金项目 （）
