水泥搅拌桩加固堤防数值模拟与分析  

Numerical Simulation and Analysis of Embankment Reinforcement by Cement Mixing Pile

作　　者：雷刚 LEI Gang(Tianying Hydropower Planning and Design CO.LTD.,Ganzhou 341000,China)

机构地区：[1]赣州市天鹰水利水电规划设计有限公司,江西赣州341000

出　　处：《河南水利与南水北调》2023年第6期136-138,共3页Henan Water Resources & South-to-North Water Diversion

摘　　要：以赣州市某水利水电工程为例,采用有限元分析方法构建起堤防工程斜坡式堤身水泥搅拌桩加固计算模型,在分析水泥搅拌桩加固方案适用性的基础上,对桩长、桩间距、桩排数、桩身强度等参数取值影响堤身抗滑稳定安全系数,堤顶沉降位移和水平位移以及加固效果展开数值模拟和量化分析。结果表明,水泥搅拌桩作为常见的水利水电工程堤防边坡软基处理加固措施,加固处理效果及造价主要与搅拌桩桩长、桩间距、桩排数、水泥掺量、水泥强度等级、地基含水率、外掺剂等参数有关,必须加强试验,确定出最佳的施工参数取值和施工方案,确保加固效果。Taking a hydraulic and hydropower project in Ganzhou as an example,a finite element analysis method is used to construct a reinforcement calculation model for slope levee body of levee project with cement mixing piles.Based on the analysis of the applicability of the reinforcement scheme of cement mixing piles,the effects of pile length,pile spacing,pile row number and pile strength on the factor of safety stability of the levee,the settlement and horizontal displacement of the top of the levee,and the reinforcement effect of the levee are numerically simulated and quantitatively analyzed.The results show that the cement mixing pile is a common reinforcement measure for soft foundation treatment of embankment slope in water conservancy and hydropower projects.The effect and cost of reinforcement are mainly related to the length of mixing pile,pile spacing,pile row number,cement content,cement strength grade,water content of foundation,admixture and so on.It is necessary to strengthen the test to determine the best construction parameter value and construction scheme to ensure the reinforcement effect.

关 键 词：水泥搅拌桩 加固 堤防 数值模拟 有限元 

分 类 号：TV223.22[水利工程—水工结构工程]