河南城建学院学报2024，Vol.33Issue(4)：100-107,8.DOI:10.14140/j.cnki.hncjxb.2024.04.013
库水位升降对桥区岸坡稳定性的影响分析
Influence of reservoir water level rise and fall on stability of bridge bank slope
摘要
Abstract
To study the influence of water level fluctuations on the stability of bridge bank slope,a bridge bank slope in the southwest region was selected as the research object.Based on the saturated-unsaturated seepage theory,the geostudio software system was used to analyze the variations of seepage field,displacement field,and stability of the bridge bank slope during water level fluctuations.The changing law of horizontal displacement of the bridge foundation was also discussed.The results show that during water level fluctuations,the seepage field of the slope exhibits a significant lag effect.Under initial impoundment and high water level conditions,the hor-izontal displacement of the slope monitoring points increases first and then decreases below the normal im-poundment level,and gradually increases above the normal impoundment level;under sudden water level drop conditions,the horizontal displacement of the slope monitoring points increases rapidly.Under initial impound-ment and sudden water level drop conditions,the horizontal displacement of the bridge foundation increases rapidly;under high water level conditions,the horizontal displacement of the bridge foundation continues to in-crease when above the infiltration line within the slope,and gradually decreases when below the infiltration line within the slope.Steeper bridge bank slopes exhibit larger horizontal displacements,requiring corresponding re-inforcement measures.The stability factor of the bridge bank slope rapidly decreases during sudden water level drops,and the stability of the bridge bank slope no longer meets the engineering requirements after a water lev-el drop of approximately 21.32 m.关键词
桥区岸坡/稳定性/渗流场/位移场/桥基位移Key words
bridge bank slope/stability/seepage field/displacement field/bridge foundation displacement分类
交通工程引用本文复制引用
刘飞飞,汤华,秦雨樵..库水位升降对桥区岸坡稳定性的影响分析[J].河南城建学院学报,2024,33(4):100-107,8.基金项目
云南省交通科技项目(云交科教便[2018]45号,云交科教便[2020]74号) （云交科教便[2018]45号,云交科教便[2020]74号）
