Real-Time Monitoring of Large-Diameter Caissons
Real-Time Monitoring of Large-Diameter Caissons
复制标题
大直径沉箱实时监测
DOI：
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发表时间：
2018
期刊：
影响因子：
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通讯作者：
B. Byrne
中科院分区：
文献类型：
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作者：
B. Sheil;R. Royston;B. Byrne
大直径沉箱是深基础、地下储罐和衰减罐、泵站以及隧道掘进机发射井和接收井广泛采用的解决方案。下沉过程面临许多挑战，包括保持沉箱的垂直度、控制下沉速度以及通过使用润滑液最大限度地减少土壤结构摩擦应力。牛津大学开发了一种定制监测系统，可以对下沉阶段的不良反应（例如过度的土壤-结构界面摩擦）提供早期预警。该监测系统在英国最近的一个试点项目中进行了试用，该项目涉及建造一个内径 32 m、深 20 m 的钢筋混凝土沉箱。本文介绍了所开发的监控系统及其对试点项目建设过程的影响。早期迹象表明，现场施工数据的实时反馈对施工过程的效率和安全性具有重大影响。
Large-diameter open caissons are a widely-adopted solution for deep foundations, underground storage and attenuation tanks, pumping stations, and launch and reception shafts for tunnel boring machines. The sinking process presents a number of challenges including maintaining verticality of the caisson, controlling the rate of sinking, and minimizing soil-structure frictional stresses through the use of lubricating fluids. A bespoke monitoring system has been developed at University of Oxford to provide early warning of adverse responses during the sinking phase (e.g. excessive soil-structure interface friction). The monitoring system was trialled on a recent pilot project in the UK involving the construction of a 32 m internal diameter, 20 m deep reinforced concrete caisson. This paper describes the monitoring system that was developed and its impact on the construction process of the pilot project. Early indications are that real-time feedback of live construction data has a major impact on the efficiency and safety of the construction process.