1、 摘 要 高层建筑与市政建设正处于高速发展时期，围护结构是基坑工程的重要组成 部分，其功能是用来维持地基土的平衡，使基坑四周边坡保持稳定，保证基坑开 挖及工程施工过程中的安全和基坑四周相邻建筑物的安全，不因土体变形、沉降 而造成危害。围护结构必须因工程、因地、因时制宜地进行合理设计，按要求进 行施工。基坑工程正确、科学地设计和施工，能带来巨大的经济效益和社会效益， 对加快施工进度、保护环境发挥着重要作用。 本毕业设计为*基坑围护设计。结合场地的具体情况，选择合适的围护方 式，确定了钻孔灌注桩结合一道内支撑的围护形式，外侧采用一道三轴搅拌桩止 水止土。根据提供的地质资料，准确计算实际作用于围护结
2、构上的土压力、结构 受力，合理布置围护结构和监测点，并进行相应的计算和设计，编写设计计算书， 绘制施工图。 关键词：基坑围护结构；围护桩；内支撑；土压力 Abstract High-rise buildings and municipal construction is in a period of rapid development, Retaining structure is an important part of excavation engineering, its function is to maintain the balance of the soil, keep the
3、slope around the excavation stable, and to ensure the safety of construction process and the adjacent buildings around the excavation, to avoid the harm caused by soil deformation and settlement. Retaining structure must be designed reasonably according to the engineering. And the construction shoul
4、d be based on the requirements of design. The correct, scientific design and construction of excavation engineering can bring huge economic benefits and social benefits and play an important role in accelerating the progress of construction and environmental protection. This graduation design is cal
5、led SiJiQing Hotel auxiliary building excavation engineering. This design combined with the specific situation of the site, choose the right way of retaining: bored pile combined with bracing, outside using three axis mixing pile to retain water and soil. Considering to the geological data provided,
6、 accurately calculate the soil pressure on the retaining structure and the structure stress, to layout of the retaining structure and monitoring point, calculate and design. Thus make the corresponding calculation and construction drawing. Key words：excavation retaining structure；retaining pile；inner support；soil pressure 目 录 摘 要 Abstract 第 1 章 绪论 1 1.1 引言 1 1.2 本文的主要工作. 1 第 2 章 工程概况 3 2.1 工程简介 . 3 2.2 周边环境分析 3 2.3 工程地质条件 3 第 3 章 基坑围护方案 6 3.1 本基坑工程特点 6 3.2 围护方案的比较与确定 6 3.3 支撑系统 . 6 第 4 章 围护桩设
