摘要
为增强软弱土层上填方边坡的稳定性,提出一种新型边坡处治技术,即在软基与填土之间设置土工格室加筋垫层的同时,填方边坡采用返包式加筋的组合加筋技术。本文利用有限元软件分别对软基上无筋边坡、返包式加筋边坡、设置土工格室加筋垫层和组合加筋这4种工况进行有限元模拟,对比分析了边坡有无加筋和软基上是否设置土工格室加筋垫层对边坡稳定性的影响。研究结果表明:组合加筋边坡的坡顶不均匀沉降、坡顶竖向最大沉降和边坡侧向位移均小于无筋边坡和返包式加筋边坡,且设置加筋垫层还能有效降低坡脚处的隆起量。
In order to enhance the stability of the fill slope on the soft soil layer,a new slope treatment technique is proposed. Reinforced combination reinforcement technology is to set up the geocell reinforced cushion between the soft foundation and the fill,while the fill slope is backfilled. In this paper,the finite element method is used to simulate the finite element simulation of the unreinforced slope,the returning reinforced slope and the combined reinforced slope on the soft foundation,and the presence or absence of reinforcement on the slope and the geogrid on the soft foundation are compared. The effect of the reinforced cushion on the stability of the slope is also analyzed. The results show that the uneven settlement of the slope of the combined reinforced slope,the vertical maximum settlement of the slope top and the lateral displacement of the slope are smaller than the unreinforced slope and the returning reinforced slope,and the reinforced cushion is also provided. This new method can effectively reduce the amount of uplift at the foot of the slope.
作者
盛学庆
吴浩
邓岳保
潘胜军
Sheng Xueqing;Wu Hao;Deng Yuebao;Pan Shengjun(Hangzhou Electric Power Design,Hangzhou 310006,China;Hangzhou Power Supply Company of State Grid Zhejiang Electric Power Company,Hangzhou 310016,China;Institute of Geotechnical Engineering,Ningbo University,Ningbo 315211,China)
出处
《科技通报》
2020年第7期70-75,共6页
Bulletin of Science and Technology
基金
杭州市电力设计院有限公司科技项目(188002)
浙江省自然科学基金面上项目(LY 17E080008)。
关键词
土工格室
返包式加筋
组合加筋
有限元模拟
稳定性
geocell
packaged reinforcement
combined reinforcement
finite element analysis
stability
作者简介
盛学庆(1966-),男,本科,高级工程师,主要从事结构和岩土工程设计工作,E-mail:sxq_ks@163.com。;通信作者:吴浩(1988-),男,硕士,工程师,主要从事变电站设计及软基处理工作,E-mail:wuhao6812006@163.com。
