基于ANSYS平台微型钢管桩加固滑坡体的有限元分析

发布时间：2018-05-28 05:18

本文选题：微型钢管桩 + ANSYS　；参考：《成都理工大学》2013年硕士论文

【摘要】：微型钢管桩，一般指桩小于300mm的钢管桩。施工方式采用钻孔、压力注浆等工艺。微型桩是20世纪50年代初由意大利公司首先开发应用。早期用于地基加固。近年来不断用于滑坡治理，边坡加固等工程。微型钢管桩是将钢管桩与微型桩技术结合起来的一种新型抗滑桩。具有“小径高强”的特点，适应性强、安全度高、见效快、施工时间短、桩顶位移小，同时施工方便。施工时间短。微型钢管桩，在一些特定场合，尤其是在施工场地狭小，工程条件复杂的情况下以其独特的优势，逐渐受到工程人员的重视。但是当前对微型钢管桩设计计算与加固机理没有一套成熟的理论。因此，基于土质边坡的稳定特性，探讨微型钢管桩的边坡治理加固中的设计及施工原理与方法。具有指导工程实际的意义。本文在总结前人研究成果的基础上。运用有限元分析软件—ANSYS。对微型钢管桩抗力有影响的各参数进行了分析。归纳起来，本文主要内容与所得成果如下：（1）介绍了国内外钢管桩的发展历史和现状，，分析微型钢管桩在边坡支护方面存在的问题；（2）根据微型钢管桩的加固特点探讨了微型钢管桩的实用性，同时对微型钢管桩的一般施工工艺进行了归纳；（3）总结前人研究成果的基础上，分析了微型钢管桩在加固边坡时提供的抗力，分别对独立布置的微型钢管桩体系和平面钢架微型钢管桩体系建立计算模型，分析体系中单桩的桩顶位移和内力。并得出了技术参数计算公式；（4）以物理实验为模型，运用有限元分析软件ANSYS对桩排距、土的粘聚力、土的摩擦角、土的弹性模量进行了不同取值分析。找出其中对微型钢管桩结构抗力影响最大的参数。
[Abstract]:Miniature steel pipe pile, generally refers to the pile less than 300mm steel pipe pile. The construction method adopts drilling, pressure grouting and other techniques. Miniature piles were first developed and applied by Italian companies in the early 1950s. Early used for foundation strengthening. In recent years, it has been used in landslide treatment, slope reinforcement and other projects. Micro steel pipe pile is a new anti-slide pile which combines steel tube pile with micro pile technology. It has the characteristics of "high strength of small diameter", strong adaptability, high safety degree, quick effect, short construction time, small displacement of pile top, and convenient construction at the same time. The construction time is short. Micro steel pipe pile has been paid more and more attention to by engineers in some special situations, especially in the case of narrow construction site and complicated engineering conditions. However, there is no mature theory on design calculation and reinforcement mechanism of micro-steel pipe pile. Therefore, based on the stability characteristics of soil slope, the design and construction principle and method of slope treatment and reinforcement of mini-steel pipe pile are discussed. It has the practical significance of guiding the project. This paper summarizes the previous research results on the basis. Using finite element analysis software-ANSYS. The parameters which have influence on the resistance of micro steel tube pile are analyzed. To sum up, the main contents and results of this paper are as follows: 1) the development history and present situation of steel pipe pile at home and abroad are introduced, and the problems existing in slope support of micro steel pipe pile are analyzed. 2) the practicability of micro steel tube pile is discussed according to the strengthening characteristics of micro steel tube pile, and the general construction technology of micro steel tube pile is summarized. On the basis of summarizing the previous research results, the resistance of micro steel tube pile in strengthening slope is analyzed, and the calculation models of micro steel tube pile system and plane steel frame micro steel tube pile system are established respectively. The displacement and internal force of single pile are analyzed. The formula for calculating the technical parameters is obtained. Taking the physical experiment as the model, the finite element analysis software ANSYS is used to analyze the pile spacing, the cohesive force of the soil, the friction angle of the soil and the elastic modulus of the soil. The parameters which have the greatest influence on the resistance of micro-steel pipe pile structure are found out.
【学位授予单位】：成都理工大学
【学位级别】：硕士
【学位授予年份】：2013
【分类号】：P642.22;TU473.1

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