文档介绍：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与地基处理方法。湿陷性黄土泛指饱与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,严重影响其安全与使用。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,在研究与应用等方面都还存在着不少亟待解决的问题。简要分析了管桩的承载力以及影响承载力的因素。最后通过一个实例说明了管桩施工的要点与一般步骤,了解到在实际施工过程中施工进度与成本意识的重要性！在这次设计中运用在大学期间所学理论知识对设计进行了整体把握。加深了对理论知识的理解。文中如有不当之处,望指正！
关键字:湿陷性黄土、管桩、预应力管桩
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、 It's 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!