复杂地层下轨道基础差异沉降分析和自动化监测  

Analysis of differential settlement of track foundation and automatic monitoring in complex geological formations

作　　者：赵文惠 肖熠 ZHAO Wenhui;XIAO Yi(CCCC Third Harbor Consultants Co.,Ltd.,Shanghai 200032,China)

机构地区：[1]中交第三航务工程勘察设计院有限公司,上海200032

出　　处：《水运工程》2025年第3期116-120,共5页Port & Waterway Engineering

基　　金：国家重点研发计划项目(2023YFB2604200)。

摘　　要：盐田港东作业区拟建成为自动化集装箱堆场,堆场采用轨道式龙门吊作业,因场地不具备施打桩基的条件,采用强夯置换法进行轨道基础区域的加固。针对东作业区地层组成极为复杂,且突变地层较多,同时轨道吊对差异沉降要求极高的问题,结合现场已完成地基处理区域的检测数据,采用各向同性均质线性变形体理论,对场地的工后沉降和差异沉降进行分析计算。结果表明,强夯置换对地基基础沉降有明显改善作用,但在局部抛石层与填土层交接处差异沉降相对较大。针对该结论进行了自动化监测的方案研究,提出采用全站仪自动化检测系统,对安全风险系数较高的区域进行监测,通过自动化监测系统的自动整理数据、分析结果,可实时了解和掌控轨道的运行安全。The east operating area of Yantian Port is planned to be developed into an automated container yard,which will be operated by rail-mounted gantry crane(RMG).Due to the lack of conditions for pile foundation construction on the site,the track foundation area will be reinforced by dynamic compaction replacement method.In response to the extremely complex geological composition and frequent abrupt changes in the area,as well as the high requirements for differential settlement by rail cranes,this article combines the detection data of the completed foundation treatment area on site and adopts the theory of isotropic homogeneous linear deformation to analyze and calculate the post construction settlement and differential settlement of the site.The results show that dynamic compaction replacement has a significant improvement on the foundation settlement,but the differential settlement is relatively large at the junction of the local riprap layer and the fill layer.In response to this conclusion,this article conducts a study on the scheme of automated monitoring and proposes the idea of using a total station automated detection system to monitor areas with high safety risk factors.Through the automatic organization of data and analysis results by the automated monitoring system,the safety of track operation can be monitored and controlled in real time.

关 键 词：复杂地层 轨道基础 强夯置换 差异沉降 自动化监测 

分 类 号：U655.57[交通运输工程—港口、海岸及近海工程]