离岸深水构筑物软土地基监测研究

发布时间：2018-02-13 01:29

本文关键词： 深水软土地基防波堤安全监测　出处：《天津大学》2014年硕士论文　论文类型：学位论文

【摘要】：离岸深水防波堤承受复杂、恶劣的水文地质条件。天然软土地基作为离岸深水防波堤最常见的基础形式，其强度和变形难以满足工程需求，需要进行加固处理。调研结果表明，当前对于适宜环境条件下的软基监测研究较多，而对于相对恶劣的离岸深水软基监测研究较少；测控自动化发展刻不容缓。针对以上问题，笔者通过文献调研及自身经验，归纳总结了离岸深水软基条件下，监测系统的核心技术，包括监测项目、监测目的、测点布设原则、常用仪器的主要性能、仪器工作原理、仪器埋设流程及安装注意事项、测量技术、精度分析等内容；介绍了测控自动化系统在离岸深水软基监测中的应用，以及水下测控自动化的重难点——仪器保护，对比了测控自动化技术与传统测控技术的优缺点并介绍了离岸深水软基监测的控制标准。本文结合三个工程实例，说明了在深水软基监测中，，建立相应的监测体系、设置齐全的监测内容、保证准确的仪器埋设、获取精确可靠的观测数据对于控制施工进度、确保地基安全稳定的重要作用；实例中监测方案的选定、监测仪器设备的加工埋设、自动测控数据采集及相关结果分析方法等，可以为相似的工程项目提供有效借鉴；实践证明，由自动测控、水下无线传输系统二者构成的测控自动化系统具有非常广泛的应用价值和推广前景。
[Abstract]:Offshore deep-water breakwater is subjected to complex and bad hydrogeological conditions. As the most common foundation form of offshore deep-water breakwater, the strength and deformation of natural soft soil foundation are difficult to meet the engineering needs. At present, there are more researches on soft foundation monitoring under suitable environmental conditions, but less on the relatively bad offshore soft foundation monitoring, so it is urgent to develop the automation of measurement and control. In view of the above problems, the author summarizes the core technology of the monitoring system under the condition of offshore deep water soft foundation through literature investigation and own experience, including monitoring project, monitoring purpose, measuring point setting principle, main performance of commonly used instruments, etc. This paper introduces the application of measurement and control automation system in the monitoring of soft foundation in offshore deep water, and the protection of instrument, which is the most important and difficult point of underwater measurement and control automation, such as the working principle of instrument, the procedure of instrument installation and the matters needing attention in installation and installation, measurement and control technology, precision analysis, etc. The advantages and disadvantages of automation technology and traditional technology are compared, and the control standard of offshore soft foundation monitoring is introduced. Combined with three engineering examples, this paper shows that in the monitoring of deep water soft foundation, the corresponding monitoring system is established, the complete monitoring content is set up, the accurate instrument is embedded, and the accurate and reliable observation data are obtained to control the construction progress. It is important to ensure the safety and stability of foundation, such as the selection of monitoring scheme, the processing and embedding of monitoring instruments and equipments, the automatic data acquisition and the analysis of related results, etc., which can provide effective reference for similar engineering projects. The practice shows that the automatic measurement and control system composed of automatic measurement and control and underwater wireless transmission system has very wide application value and popularization prospect.
【学位授予单位】：天津大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U656.2;U655.54

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