水泥搅拌桩处理软土路基变形影响因素分析  

Analysis of the Factors Affecting the Deformation of Soft Soil Roadbed Processed by Cement Mixing Piles

作　　者：王勇 Wang Yong(Henan Yongming Municipal Garden Construction Co.,Ltd.,Xinxiang 453099,China)

机构地区：[1]河南永明市政园林建设有限公司

出　　处：《甘肃科学学报》2020年第1期110-115,共6页Journal of Gansu Sciences

摘　　要：为研究水泥搅拌桩处理软土路基的路堤变形影响因素,通过运用有限元软件建立软土路基数值模型,并针对不同地基不均匀程度、路堤高度、桩长及桩位间距对路堤位移及应力的影响规律进行对比分析,得出以下主要结论:地基不均匀程度为工况②时,路堤的变形量和应力值最为合理;路堤高度<20 m时,路堤位移和应力增大幅度较小,路堤高度>20 m时,位移和应力增长幅度较大;适宜增加水泥搅拌桩长度可以有效减小路堤变形和轻微降低路堤的应力变形量;增加水泥搅拌桩桩位间距会增大路堤位移变形量和水平应力变形量。研究结果可为水泥搅拌桩处理相关软土地基提供借鉴。In order to study the factors affecting the deformation of embankment of the soft soil roadbed processed by cement mixing piles,a numerical model of soft soil roadbed was established by using finite element software.The rules of influence of degree of unevenness,height of embankment,length of piles and distance between piles on the embankment displacement and stress of different foundations were compared and analyze.The following conclusions are drawn:firstly,when the unevenness of the foundation is under the working condition 2,the deformation and stress value of the embankment are the most reasonable.Secondly,when the embankment height is less than 20 m,its displacement and stress increase at a minimum level,while the height is greater than 20 m,both of the values increase greatly.Thirdly,an appropriate addition of the length of cement mixing pile is effective to reduce the deformation and slightly decrease the amount of stress deformation of the embankment.Fourthly,the displacement and deformation and the amount of horizontal stress deformation of the embankment will be increased by enlarging the gap between cement mixing piles.Therefore,the results can provide reference for the soft soil roadbed related to cement mixing pile treatment.

关 键 词：水泥搅拌桩 软土地基 地基不均匀程度 路堤高度 

分 类 号：U416[交通运输工程—道路与铁道工程]