摘要
采用三维有限元软件,进行水平定向钻穿越堤防的施工过程的应力应变分析,总结含有软土地基的数值计算模型边界条件,并重点研究定向钻穿越至堤防堤顶前5.0m、堤顶、堤防边坡中央、堤脚、贯穿堤身5个重要位置的堤防安全稳定性。研究结果表明,最为不利的施工位置位于堤防边坡的中央至坡脚,且堤防安全系数在施工过程中呈现忽高忽低的变化规律,但总体变化趋势呈下降规律。为相关水利建设提供重要技术基础和依据。
The three-dimensional finite element software was used to horizontal directional drilling crossing levee construction process of stress and strain analysis,summary contains the numerical calculation model of soft soil foundation boundary conditions,and focused on the dyke safety stability of five important positions as directional drilling crossing to the embankment constructed before 5.0m,embankment top,central embankment slope,the toe,throughout the body.The results showed that the most unfavorable construction position was located from the center of the embankment slope to the foot of the slope,and the safety coefficient of the embankment showed the change law of rising and falling in the construction process,but the overall change law was decreasing.The above research results could provide important technical basis for related water conservancy construction.
作者
张胤
程大鹏
张朝利
李军
ZHANG Yin;CHENG Dapeng;ZHANG Chaoli;LI Jun(Nanjing Water Planning and Designing Institute Co.,Ltd,Nanjing 210006,Jiangsu;Pukou Water Affairs Bureau,Nanjing 210008,Jiangsu)
出处
《江苏水利》
2020年第4期33-38,44,共7页
Jiangsu Water Resources
基金
江苏省水利科技项目(2017033)。
关键词
水平定向钻
软弱土层
穿堤工程
扩孔
安全系数
horizontal directional drill
soft soil layer
crossing-dyke engineering
reaming
safety factor
作者简介
张胤(1987-),女,高级工程师,博士,主要从事水利工程设计研究。E-mail:375047833@qq.com。
