软黏土中市政道路管线及构筑物的地基处理技术及应用

发布时间：2018-01-11 21:35

本文关键词：软黏土中市政道路管线及构筑物的地基处理技术及应用　出处：《浙江大学》2016年硕士论文　论文类型：学位论文

【摘要】：市政管道埋设对地基土有一定的要求,尤其是对沉降的要求较高的重力流排水管道,铺设前对软黏土地基必须进行适当的处理。目前我国对市政道路管道铺设在软黏土地基的处理尚无统一的标准,需要工程师在具体设计、施工过程中不断摸索和积累经验。同时由于人们对软黏土地基不均匀沉降造成的市政道路管线、道路问题不够重视,导致路面或管道破坏频频发生。因此,对软黏土地基中市政管线基础处理的研究和总结具有重要意义。本文的主要内容包括以下几个方面：(1)针对市政道路管道工程在软黏土地基中满足地基承载力和沉降的要求,从管道材料、地基处理及施工方式上进行优化,重点分析的方向包括柔化管道、强化地基、防治不均匀沉降及采用非开挖施工等四个方面。(2)通过分析市政道路工程中不同类型管线对基土沉降的要求,同时结合地质情况、工期要求、经济性等方面的因素,提出不同的软黏土地基处理方案,文中涉及的主要地基处理方法包括：换填垫层法、挤淤置换法、砂石桩法、预制短桩法、深层搅拌法、旋喷桩法等。(3)通过梳理以往各种软基处理方面的经验和教训,总结市政工程中软基处理的各种常规方法及使用效果,根据工程实际,提出一些管线构筑物的地基处理方式及抗浮措施。(4)本文针对性的提出了市政道路管线结构工程的设计思路以及设计方法,列举了各种常见处理方法的造价、工程实例、优缺点及实际应用中的情况,并通过两个典型工程实例,进一步论证软黏土地基中市政道路管线及构筑物的地基处理技术的应用技术。本文的研究结果,尤其是软基处理方案部分,是探索市政管线工程在软黏地基土上的处理标准的一次尝试,还有待于进一步完善。本文的研究成果包括市政道路管线及构筑物在软黏土上的地基处理方法可以作为提供科学研究和工程设计的一般方法和理论依据。
[Abstract]:Municipal pipelines have certain requirements for foundation soil, especially gravity flow drainage pipes, which require high settlement. The soft clay foundation must be treated properly before laying. At present, there is no uniform standard for the treatment of the municipal road pipeline laying on the soft clay foundation in our country, and engineers are required to design it. At the same time, due to the uneven settlement of soft clay foundation caused by municipal road pipeline, road problems do not pay enough attention to, resulting in pavement or pipeline damage occurred frequently. It is of great significance to study and summarize the treatment of municipal pipeline foundation in soft clay foundation. The main contents of this paper include the following aspects: 1). In view of the municipal road pipeline engineering in soft clay foundation to meet the foundation bearing capacity and settlement requirements. From the pipeline materials, foundation treatment and construction methods of optimization, the emphasis of the direction of analysis includes flexible pipeline, strengthening the foundation. Prevention and treatment of uneven settlement and the use of non-excavation construction, through the analysis of different types of municipal road engineering pipeline foundation soil settlement requirements, combined with geological conditions, duration requirements. Different soft clay foundation treatment schemes are put forward in the aspects of economy and so on. The main foundation treatment methods in this paper include: replacement cushion method, silt displacement method, sand and stone pile method, prefabricated short pile method, deep mixing method. Through combing the past experiences and lessons of soft foundation treatment, this paper summarizes the conventional methods and application effects of soft foundation treatment in municipal engineering, according to the engineering practice. Put forward some pipeline structure foundation treatment and anti-floating measures. 4) this paper puts forward the municipal road pipeline structure engineering design ideas and design methods. The cost, engineering examples, advantages and disadvantages of various common treatment methods and their practical application are listed, and two typical engineering examples are given. Further demonstrate the application technology of the municipal road pipeline and structure foundation treatment technology in soft clay foundation. The research results of this paper, especially the soft foundation treatment scheme part. It is an attempt to explore the treatment standard of municipal pipeline engineering on soft clay soil. The research results of this paper include the foundation treatment method of municipal road pipeline and structure on soft clay, which can be used as a general method and theoretical basis for scientific research and engineering design.
【学位授予单位】：浙江大学
【学位级别】：硕士
【学位授予年份】：2016
【分类号】：TU753;TU990.3

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