SMW工法桩在基坑围护工程实例中的应用

发布时间：2018-05-02 15:32

本文选题：SMW工法桩 + 深基坑支护　；参考：《湖北工业大学》2017年硕士论文

【摘要】：SMW工法桩是我国近几年来从国外引进的一种相对比较新颖的深基坑支护的方法,该种支护结构所占用的地面面积小,在很多工程中还有防止基坑渗水等作用,这种支护桩的原理即是在水泥土搅拌桩中插入型钢而最终形成的型钢混凝土复合支护结构。因此在我国近些年来的基坑支护作业中得到广泛的应用。本文介绍了SMW工法桩在当前深基坑支护的形式与特点,从国内外的一些研究现状、发展动态出发,对SMW工法桩的结构内力计算方法、计算参数的确定、对SMW工法桩所采用的主要材料性能参数的介绍和研究。通过基本参数的确定,本文重点详细的介绍了SMW工法桩在实际工程中的设计与施工过程中的要点进行研究,并详细绘出施工工艺流程图指出施工过程中需要注意的问题。本论文主要研究的以下内容包括几个方面:(1)SMW工法桩支护过程对坑基支护的特点、原作理用即施工设计介绍过程,受力及变形情况对其中的作用进行归纳总结,分析研究SMW工法桩的影响因素稳定性,相对应的提出措施解决;(2)对SMW工法桩开挖深度及水平钢支撑设置的问题采取ANSYS模型分析,分析出最大应力与变形出现的时间与位置,验证最大应力与变形出现的合理性;(3)通过实际工程案例,详细的介绍了SMW施工工法桩过程中,需要注意施工时候的要点提出解决相对应的措施。研究结果表明,对于复杂的深基坑工程进行模型分析及设计施工的过程控制非常重要,通过实际工程案例与经验总结形成论文核心,对当前我国深基坑支护工程的设计和施工具有一定的指导意义。
[Abstract]:SMW pile is a relatively new method of deep foundation pit support introduced from abroad in recent years in our country. This kind of supporting structure occupies small ground area, and also has the function of preventing foundation pit seepage in many projects. The principle of this kind of supporting pile is that the steel reinforced concrete composite support structure is formed by inserting steel into the cement soil mixing pile. Therefore, it has been widely used in foundation pit support in recent years in our country. This paper introduces the form and characteristics of SMW pile supporting in deep foundation pit at present. Based on some domestic and international research status and development trends, the calculation method of structural internal force and the determination of calculation parameters of SMW construction pile are given. The main material properties of SMW pile are introduced and studied. Through the determination of basic parameters, this paper introduces in detail the key points in the design and construction process of SMW construction pile in practical engineering, and points out the problems needing attention in the construction process by drawing the construction process flow chart in detail. The main contents of this paper are as follows: several aspects: the characteristics of the pit foundation support during the SMW pile support process, the introduction process of the original construction design, the effect of the force and the deformation. This paper analyzes and studies the stability of influencing factors of SMW pile, and puts forward corresponding measures to solve the problem of excavation depth and horizontal steel bracing of SMW pile. The ANSYS model is adopted to analyze the time and position of maximum stress and deformation. To verify the rationality of the maximum stress and deformation, the paper introduces in detail the key points in the construction of SMW pile in the process of construction, and puts forward the corresponding measures through practical engineering cases. The results show that it is very important to analyze the model and control the process of design and construction for complex deep foundation pit engineering, and form the core of the paper through practical engineering cases and experience summarization. It has certain guiding significance for the design and construction of deep foundation pit supporting engineering in our country.
【学位授予单位】：湖北工业大学
【学位级别】：硕士
【学位授予年份】：2017
【分类号】：TU753.3

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