倾角传感器在三轴搅拌桩垂直度控制中的应用  

Application of Tilt Angle Sensor in Verticality Control of Three-axis Mixing Piles

作　　者：刘杰 马超[1,2,3] 姚兆龙 周腾龙 LIU Jie;MA Chao;YAO Zhaolong;ZHOU Tenglong(CCCC Second Harbour Engineering Co.,Ltd.,Wuhan,Hubei 430040,China;Key Laboratory of Large-span Bridge Construction Technology,Wuhan,Hubei 430040,China;Research and Development Center of Transport Industry of Intelligent Manufacturing Technologies of Transport Infrastructure,Wuhan,Hubei 430040,China;China Gezhouba Group Municipal Engineering Co.,Ltd.,Yichang,Hubei 443002,China)

机构地区：[1]中交第二航务工程局有限公司,湖北武汉430040 [2]长大桥梁建设施工技术交通行业重点实验室,湖北武汉430040 [3]交通运输行业交通基础设施智能制造技术研发中心,湖北武汉430040 [4]中国葛洲坝集团市政工程有限公司,湖北宜昌443002

出　　处：《施工技术(中英文)》2025年第7期97-101,共5页Construction Technology

基　　金：交通运输行业重点科技项目(2022-ZD4-060)。

摘　　要：针对目前三轴搅拌桩施工垂直度无法有效监测和控制的问题,依托张靖皋长江大桥南航道桥南锚碇基础地下连续墙槽壁加固试验段工程,通过在三轴搅拌桩机上安装倾角传感器,并对应用情况及监测数据进行总结和分析。研究结果如下:倾角传感器的应用能够实现对成桩垂直度的有效监测和控制;施工中导向架仅在钻头入土、叶片穿过护筒和反向提升时存在短暂的较大晃动,其他阶段垂直度满足要求;导向架垂直度保证率曲线呈现增长速率先增大后减小的趋势,曲线上升并逐渐收敛至100%;典型首开幅、正常时间间隔两侧套接中间幅和超长时间间隔单侧套接幅施工时导向架垂直度1/250的保证率分别为89.09%,97.70%和81.68%;三轴搅拌桩施工中优先考虑跳打方式,搭接施工间隔时间应控制在24h以内。Aiming at the problem that the verticality of three-axis mixing pile construction cannot be effectively monitored and controlled,based on the testing section of underground continuous wall reinforcement of the South Anchorage Foundation of the Zhangjinggao Yangtze River Bridge,a tilt sensor is installed on the three-axis mixing pile machine,and the application and monitoring data are summarized and analyzed.The research results are as follows that the application of the inclination sensor can effectively monitor and control the verticality of the pile.During the construction,the guide frame only has a brief yet large shaking when the bit is buried,the blade passes through the casing,and during the reverse lifting.While the verticality in the other stages basically meets requirement.The verticality assurance rate curve of the guide frame shows a trend of increasing before decreasing,and the curve rises and gradually converges to 100%.The guarantee rates of the guide frame for typical initial opening span,normal intervals with double-side overlap,and ultra-long intervals with single-side overlap are 89.09%,97.70%and 81.68%,respectively.In the construction of a three-axis mixing pile,the method of jumphitting is preferred,and the interval time of lapping construction should be controlled within 24hours when using a single-side squeezing method.

关 键 词：桥梁工程 基础 三轴搅拌桩 倾角传感器 垂直度 监测 

分 类 号：TU472.3[建筑科学—结构工程]