沉管隧道轴线控制和调整技术研究

发布时间：2018-04-19 02:01

本文选题：沉管隧道 + 沉放对接　；参考：《华南理工大学》2014年硕士论文

【摘要】：随着交通运输的快速发展，沉管隧道在江河和海上跨越中因其自身的诸多优势：对地质水文条件适应能力强、埋深浅，与两岸道路容易贯通、工期短、施工条件和断面适应能力好，在国内外得到了较广泛的应用。我国对沉管隧道技术的研究起步较晚，但发展非常快，已建成了十多条沉管隧道，，沉管隧道施工技术日趋成熟。然而，有关沉管隧道的理论研究尚处于滞后状态。因此，如何提高我国理论研究水平是我国目前沉管隧道领域的主要课题。本文主要围绕沉管隧道施工技术、轴线控制和调整技术进行研究，探讨管段在沉放、对接过程中的精度控制问题，包括选择适合自然条件及航道条件的沉放方案、管段定位测量、管段水下结合处的精度控制方法。当管段放水压接之后，管段尾部受到的水压力很大，利用管段安装的调节系统往往无法进行轴线偏差调校，可采用在管内接头辅助顶推的方法，也可以采用横向错位对接调整的方法进行调校，本文将各种调校方法进行对比，并针对调校方法进行了数值分析，模拟管段和Gina止水带进行分析。研究结果为管段的轴线调整提供了理论依据，并为管段沉放施工提供了有益的参考。
[Abstract]:With the rapid development of traffic and transportation, the sinking tube tunnel has many advantages in river and sea crossing, such as strong adaptability to geological and hydrological conditions, shallow buried depth, easy access to cross-strait roads, and short construction period.The construction conditions and section adaptability are good, and have been widely used at home and abroad.The research of immersed tunnel technology in China started late, but the development is very fast. More than ten immersed tunnels have been built, and the construction technology of immersed tunnel is becoming more and more mature.However, the theoretical study of immersed tunnel is still lagging behind.Therefore, how to improve the level of theoretical research in China is the main subject in the field of immersed tunnel.In this paper, the construction technology, axis control and adjustment technology of pipe sinking tunnel are studied, and the precision control problems in the course of sinking and docking are discussed, including the choice of settlement scheme suitable for natural conditions and channel conditions.Position measurement of pipe segment, precision control method of underwater joint of pipe section.The water pressure on the end of the pipe section is very high when the pipe section is pressed with water, so the adjustment system installed in the pipe section can not adjust the deviation of the axis line, and can adopt the method of auxiliary pushing in the joint of the pipe.In this paper, the adjustment methods are compared, and the numerical analysis of the adjustment method is carried out, and the analysis of the pipe segment and the Gina water stop belt is carried out.The results provide a theoretical basis for the adjustment of the axis of the pipe section and a useful reference for the sinking construction of the pipe section.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U459.5;U455.4

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