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。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和一般步骤，了解到在实际施工过程中施工进度和成本意识的重要性！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! In this design at the university during the application of the theory of knowledge to grasp the overall design. Deepened the understanding of theoretical knowledge. If the text is anything wrong with the hope that correction!
Keywords: loess collapsible; Pipe; Prestressed Pile
目录
第一章绪论 (6)
一、管桩的优点与现状 (6)
二、湿陷性黄土基本机理及地基处理 (7)
1、黄土的湿陷机理 (8)
2、湿陷性黄土地基的处理方法 (9)
3、结语 (11)
第二章：管桩承载力分析 (12)
1、管桩的承载特性 (12)
2、管桩的受力分析 (13)
3、管桩设计施工中的问题及质量控制 (14)
第三章：预应力管桩施工方案 (16)
1 、施工流程 (16)
2 、操作工艺 (16)
3 、施工质量标准 (20)
4、常见问题及处理法 (22)
第四章：管桩施工组织设计实例 (26)
1、工程概况 (26)
2、工期及施工目标 (27)
3、施工准备情况 (27)
4、施工总体布署 (28)
5、施工组织机构及管理网络 (29)
6、主要施工工艺及方法 (29)
7、针对本工程特点采取的特殊................................. .32
8、季节性施工措施 (32)
9、实现质量目标的措施 (33)
10、工期保证措施 (37)
11、安全生产和文明施工措施 (38)
12、降低成本，提高经济效益措施 (40)
13、计划投入的主要施工机械设备及材料进场计划表 (40)
14、施工进度计划及劳动力安排一览表 (41)
第五章：结语 (43)
