大直径盾构穿越密集建筑物实时监测技术研究  

ON THE REAL-TIME MONITORING TECHNOLOGY OF LARGE-DIAMETER SHIELD TUNNELING THROUGH DENSE BUILDINGS

作　　者：宗军良 ZONG Junliang(Shanghai Huangpu River Crossing Facilities Investment and Construction Development Co.,Ltd.,Shanghai 200093,China)

机构地区：[1]上海黄浦江越江设施投资建设发展有限公司,上海200093

出　　处：《低温建筑技术》2023年第3期147-151,共5页Low Temperature Architecture Technology

基　　金：上海市交通委员会科研项目“软土道路检查井沉降防治研究与示范”(JT2019-KY-014);上海城投集团科技创新计划“市政交通基础设施移交接管及建设期保护区研究”(CTKY-GLCX-2020-004)。

摘　　要：大直径盾构穿越密集建筑群是中心城区隧道施工需解决的重要技术难题.为确保上海龙耀路越江隧道安全穿越众多浅基础建筑物,项目基于工程地质条件与周边建筑物情况,通过盾构姿态、盾构衬砌环监测及后注浆探测等实时控制盾构施工,并采用房屋倾斜监测、墙体裂缝以及沉降监测等进行建筑物变形实时监控,形成了大直径盾构穿越密集建筑物实时监测技术体系.工程应用结果表明,综合实时监测技术安全适用,盾构施工及穿越后地层变形均较小,对周边建筑物影响不大,相关测点的绝对沉降基本维系在-1.0mm左右;综技术能实时掌握盾构施工参数及房屋变形数据,对于盾构施工精细化管理与低影响施工起到了关键作用,相关成果可为类似工程提供技术借鉴和参考.Large diameter shield tunneling through dense buildings is an important technical problem to be solved in the construction of tunnels in central urban areas.Shanghai Longyao Road river-crossing tunnel project passes through shallow foundation buildings.To ensure the project safety,the shield construction in real time through the shield posture,shield lining ring monitoring,and post-grouting detection are adopted within the engineering geological conditions and the surrounding buildings.The house tilt,wall cracks,and settlement of the building are monitored in real time,forming a real-time monitoring technology system for large-diameter shield tunneling through dense buildings.The results show that the comprehensive real-time monitoring technology is safe and applicable,and the ground deformation after shield construction and crossing is small,which has little impact on surrounding buildings,and the absolute settlement of relevant measuring points is basically maintained at about-1.Omm.This comprehensive technology obtains shield construction parameters and house deformation data in real time,and plays a key role in the fine management of shield construction and low-impact construction.The relevant results may provide technical reference for similar projects.

关 键 词：大直径盾构 密集建筑群 实时监测 变形控制 

分 类 号：TU745.3[建筑科学—建筑技术科学]