临海饱水段淤泥质粉质黏土路基加固防沉降关键技术研究  

作　　者：贺云飞 庞其瑞 王明全 高海龙 江小满 

机构地区：[1]中建一局集团第一建筑有限公司,海南琼海571499

出　　处：《科技创新与应用》2025年第10期55-60,65,共7页Technology Innovation and Application

摘　　要：应用结构力学及材料力学等相关理论,结合现场试验数据,针对琼海市某路基建设的沉降问题进行数值模拟研究。采用水泥搅拌桩对路基进行加固处理,对加固前、后的路基进行对比分析,得到水泥搅拌桩加固后路基的应力分布、变形及沉降规律。结果表明,水泥搅拌桩加固前后,路基的应力分布主要在上半部分,受压为主。经加固处理后,路基的竖向应力会主要集中在水泥搅拌桩处,而未加固处理的路基的竖向应力主要分布在路基土体中,加固后会导致路基的整体应力重新调整分布;加固处理后路基的沉降量可减少65%以上,水泥搅拌桩加固淤泥质粉质黏土路基效果显著。Applying relevant theories such as structural mechanics and material mechanics,combined with field test data,a numerical simulation study was carried out on the settlement problem of a subgrade construction in Qionghai City.Cement mixing piles are used to strengthen the subgrade.The subgrade before and after reinforcement is compared and analyzed,and the stress distribution,deformation and settlement laws of the subgrade strengthened by cement mixing piles are obtained.The results show that before and after reinforcement with cement mixing piles,the stress distribution of the subgrade is mainly in the upper part,and the compression is the main part.After reinforcement,the vertical stress of the subgrade will be mainly concentrated at the cement mixing piles,while the vertical stress of the unreinforced subgrade will be mainly distributed in the subgrade soil.After reinforcement,the overall stress of the subgrade will be re-adjusted and distributed;through reinforcement,the settlement of the subgrade can be reduced by more than 65%,and the cement mixing piles have a significant effect on reinforcing the mucky silty clay subgrade.

关 键 词：黏土路基 加固处理 水泥搅拌桩 沉降分析 应力 

分 类 号：U416.1[交通运输工程—道路与铁道工程]