工程地质勘察毕业论文.doc

工程地质勘察毕业论文 题目：管桩加固湿陷性黄土地基施工设计 摘 要 本篇论文主要分析了湿陷性黄土的基本机理和地基处理方法。湿陷性黄土泛指饱和的结构不稳定的黄色土，在自重压力或自重压力与附加压力作用下，受水浸湿后，土的结构迅速破坏，发生显著下沉的现象。它的这种特性，会对结构物带来不同程度的危害，使路基及结构物大幅度沉降、折裂、倾斜，严重影响其安全和使用。因此对于湿陷性黄土地基要进行有效地加固处理。通过分析这种特殊地基的基本特性，针对此种地基，采用管桩基础进行加固。从而引入了管桩施工的优点及缺陷以及施工工艺。管桩作为一种新桩型以其桩身质量可靠、承载力高、施工速度快、现场整洁、较为经济等优点越来越得到广泛的应用。但由于管桩的应用时间不长，在研究和应用等方面都还存在着不少亟待解决的问题。 Abstract This paper analyzes the collapsible loess foundation of the basic mechanism and treatment. Collapsible loess saturation refers to the yellow unstable soil, the pressure in the self-respect or self-pressure and under additional pressure, soaked by water, the soil structure of the rapid destruction of a significant phenomenon of the sinking. Its these characteristics, the structure will bring about varying degrees of hazards, roadbed and structures so that a substantial settlement, fracture, tilt, have seriously affected their safety and use. Therefore, in collapsible loess foundation reinforcement to effectively deal with. By analyzing this the basic characteristics of a special foundation for such a foundation, based on the use of reinforced pipe. Construction of the pipe so as to bring the strengths and shortcomings, and construction technology. pile as a new type of pile for its reliable quality, high capacity, speed of construction, site clean, more economic and other advantages of the application of more and more widely. However, due to the application of pipe is not long, in research and applications are still many problems calling for urgent solutions. A brief analysis of the bearing capacity of the pipe, as well as the factors that influence bearing capacity. Finally, through an example of the main points of the pipe construction and general steps to understand the construction process in the actual construction progress and the importance of cost-conscious! In this design at the university during the application of the theory of knowledge to grasp the overall design. Deepened the understanding of theoretic