软土地区基坑支护方案的设计与研究

发布时间：2018-03-28 11:33

本文选题：软土地区　切入点：基坑支护方案　出处：《安徽理工大学》2017年硕士论文

【摘要】：建筑的基坑工程通常指的是,在地表的下面,用来支护通过机械或人工挖掘形成的一定地下空间和附属配套的体系。支护是指对其侧面及四周采取支撑、加强稳固等保障手段来保证开挖、其它施工能够顺利进行和基坑周围环境建筑的安全的一项复杂的系统工程。基坑在挖掘施工期间,要保证其自身的稳定和安全,同时还应该有效控制其对周围环境及其他建筑物的影响。本文通过结合上海地区某基坑工程实例,对软土地区基坑支护工程的设计以及施工过程中的一些关键技术和部分相关要点做了些研究。主要内容有:1.总结和归纳了通常在工程实际中运用的基坑支护结构,如钢板桩支护等。分析了各自优劣势、适用条件、范围等。在实际施工时,应当考虑工程实际情况,包括工程地质水文等相关资料、周边建筑环境、施工条件,来进行支护结构选型。2.基坑支护设计在选型时,如何根据工程具体条件,在确保工程整体安全性的大前提下,尽可能的降低成本,以提升其经济性。介绍了基坑设计选型的一整套流程,包括制定方案、建模计算、优化设计等。3.基坑支护设计整个计算流程,包括土压力模型的选取、内力变形计算、整体稳定计算等。4.基坑支护工程在施工过程中的一些关键技术要点和整个施工流程以及可能遇到的问题,包括支护施工、土方开挖、降水、基坑监测的要求和具体内容,并完成基坑监测与效果评价。
[Abstract]:The foundation pit works of a building usually refer to a certain underground space and a supporting system formed by mechanical or manual excavation below the surface of the earth's surface. A complex system engineering that strengthens the security and other means to ensure the excavation, other construction can be carried out smoothly and the safety of the surrounding buildings of the foundation pit. During excavation and construction, the foundation pit should ensure its own stability and safety. At the same time, the influence on the surrounding environment and other buildings should be effectively controlled. In this paper, the design of foundation pit support engineering in soft soil area and some key techniques and some related key points in the construction process are studied. The main contents are: 1. Summarize and summarize the foundation pit support structure which is usually used in engineering practice. For example, steel sheet pile support and so on. The advantages and disadvantages, applicable conditions, scope and so on are analyzed. In actual construction, the actual situation of the project should be taken into account, including engineering geological and hydrological data, surrounding building environment, construction conditions, etc. How to reduce the cost according to the specific conditions of the project, under the premise of ensuring the overall safety of the project, In order to improve its economy, this paper introduces a whole set of flow of foundation pit design and selection, including drawing up scheme, modeling calculation, optimizing design, etc. The whole calculation flow of foundation pit support design includes the selection of earth pressure model, the calculation of internal force and deformation, etc. Some key technical points of foundation pit support engineering in the construction process, the whole construction process and possible problems, including support construction, earthwork excavation, dewatering, foundation pit monitoring requirements and specific content, And the foundation pit monitoring and effect evaluation are completed.
【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】：TU753

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