水泥搅拌桩加固堤防数值模拟分析  

Numerical simulation analysis of cement mixing pile strengthening embankment

作　　者：陆鹏源 LU Pengyuan(Water Conservancy Institute of Zhongshan Torch Hi-tech Industrial Development Zone,Zhongshan Guangdong 528437,China)

机构地区：[1]中山火炬高技术产业开发区水利所,广东中山528437

出　　处：《江西水利科技》2022年第2期109-113,共5页Jiangxi Hydraulic Science & Technology

摘　　要：水泥搅拌桩具有施工速度快、质量易控制、费用低等优点,在软基处理应用中取得了广泛应用与关注。本文采用有限元方法,研究了水泥搅拌桩加固堤防的可行性,并分析了搅拌桩桩长、桩径以及桩体强度参数c、φ等因素对边坡稳定的影响。结果表明:采用水泥搅拌桩加固可有效提高堤防抗滑稳定安全系数,安全系数随着水泥搅拌桩桩径与桩长的增大而增大,在一定范围内随水泥搅拌桩c、φ的减小而减小。在堤身抗滑稳定的角度上,水泥搅拌桩存在一个有效桩长,超过该长度后,继续增大桩长不改变堤身安全系数。Cement mixing pile has been widely used and concerned in the application of soft foundation treatment due to its advantages of fast construction speed,easy controlled quality and low cost.In this paper,the feasibility of strengthening embankment with cement mixing pile is studied by using finite element method,and the effects of mixing pile length,pile diameter,pile strength parameters c andφare analyzed.The results show that the anti sliding stability safety factor of embankment can be effectively improved by using cement mixing pile reinforcement.The safety factor increases with the growth of cement mixing pile diameter and pile length,and decreases with the reduction of cement mixing pile c andφin a certain range.From the perspective of anti sliding stability of embankment body,there is an effective pile length of cement mixing pile.After exceeding this length,the safety factor of embankment body will not increase with the increasing pile length.

关 键 词：水泥搅拌桩 堤防加固 影响因素 数值模拟 

分 类 号：TV223.22[水利工程—水工结构工程]