盾构法施工综合管廊关键技术研究型研究

发布时间：2018-05-20 01:34

本文选题：基坑支护 + 盾构隧道　；参考：《安徽理工大学》2017年硕士论文

【摘要】：随着我国城市建设的快速发展,诸如城市供排水、燃气、供水、电气等地下管线事故频发。特别近年来,受世界气候变暖的影响,极端天气引发的城市内涝现象日益增多,严重影响大中型城市的正常运转和居民的人身安全,已引起我国政府的高度重视,并将城市管廊建设列为我国"十三五"发展规划重点建设的内容之一。尽管早在18世纪欧洲已开始城市管廊建设,但我国近几年才兴起大规模建设,相关的设计理论和施工技术很不成熟,亟待开展相关研究。本文以苏通过江盾构综合管廊建设项目为工程背景,以隧道始发井通道及基坑和隧道盾构区间的衬砌为研究对象,采用数值模拟和综合分析相结合的研究方法,深入分析了其工程地质与水文条件特点,从技术、经济、环境、风险评估等多维度,对盾构管廊线位进行了比选研究;分析了盾构始发井基坑受力特点,研究了地下连续墙加钢筋混凝土支撑及钢支撑的支护形式的合理性;初步分析了盾构管廊隧道的形式和拼装方式,并运用运用有限元软件对隧道衬砌受力特点进行了数值模拟分析;最后,结合该工程盾构始发井基坑施工，验证了基坑维护结构和施工的安全性和可靠性。
[Abstract]:With the rapid development of urban construction in China, underground pipeline accidents such as urban water supply and drainage, gas supply, water supply, electricity and so on occur frequently. Especially in recent years, under the influence of global warming, the phenomenon of urban waterlogging caused by extreme weather is increasing day by day, which seriously affects the normal operation of large and medium-sized cities and the personal safety of residents, which has aroused the great attention of our government. The construction of city management corridor is listed as one of the key contents in the development plan of the 13th Five-Year Plan of China. Although the construction of urban pipeway has begun in Europe as early as the 18th century, large-scale construction has only emerged in China in recent years. The relevant design theory and construction technology are not mature enough, so it is urgent to carry out relevant research. This paper takes the construction project of integrated pipe corridor of Jiangsu River Shield as the engineering background, takes the tunnel origination passage and the lining of foundation pit and shield section as the research object, and adopts the research method of combining numerical simulation and comprehensive analysis. The characteristics of engineering geology and hydrological conditions are deeply analyzed, and the comparison and selection of shield pipe corridor lines are carried out from the aspects of technology, economy, environment and risk assessment, and the mechanical characteristics of the foundation pit of shield tunneling initial well are analyzed. The rationality of supporting form of underground continuous wall with reinforced concrete bracing and steel bracing is studied, and the form and assembling mode of shield tunnel are preliminarily analyzed. Finally, the safety and reliability of the foundation pit maintenance structure and construction are verified by using the finite element software to simulate the characteristics of tunnel lining force; finally, combined with the foundation pit construction of the shield tunneling starting well, the safety and reliability of the foundation pit maintenance structure and construction are verified.
【学位授予单位】：安徽理工大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU990.3

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