苏州地铁车站基坑围护结构设计+CAD图纸
毕业论文关键词:地铁深基坑；围护结构；深基坑设计；结构防水；深基坑变形
Structural Design of foundation pits of subway stations in Suzhou
Abstract: In this study, the engineering geological conditions, hydrogeological conditions, the level of protection stations and other conditions of subway station in Suzhou is used to determine the supporting structure selection. According to the surrounding environment and hydrogeological conditions, using engineering analogy to select the type of supporting structure; analysize the pit stability: envelope insertion ratio is determined; foundation reinforcement and anti-inrushing security is seizured and count ; excavation Internal Forces, reinforcement design; precipitation design calculations; pit deformation estimation and control; station structure waterproof design; and complete drawing construction and other content. Among them, the deformation of the main pit is estimated by reference journal literature and the use of experience summed in the project. The application of Tongji Venus software, Auto CAD practical applications is also related to treatise.
Keywords: Subway Deep Foundation Pit; supporting structure; Deep Foundation Pit design; Structural water-proofing ; Deep Foundation Pit deformation
目 录
1 工程概况 1
1.1 工程概况 1
1.2 水文地质工程地质条件 1
1.2.1 车站工程地质层分布与特征描述 1
1.2.2 水文地质条件 3
1.2.3 不良地质现象 3
2 支护方案的选择及比较 4
2.1 基坑支护的类型及其特点和适用范围 4
2.1.1 土钉墙 4
2.1.2 排桩水泥土重力式挡墙 4
2.1.3 地下连续墙 4
2.1.4 灌注桩排桩围护墙 5
2.1.5 型钢水泥土搅拌墙 5
2.1.6 钢板桩围护墙 6
2.1.7 钢筋混凝土板桩围护墙 6
2.2 方案的比较及确定 6
2.2.1 基坑的特点 6
2.2.2 支护方案的选择 7
3 基坑稳定性分析 8
3.1 基坑的整体稳定性验算 8
3.2 基坑的抗隆起稳定验算 8
3.2.1 基于地基承载力模式的抗隆起稳定性分析 8
3.2.2 基于圆弧滑动模式的抗隆起稳定性分析 10
3.3 基坑的抗倾覆稳定性验算 12
3.4 基坑的抗渗流稳定性验算 13
4 地基加固及抗突涌安全性计算 15
4.1 承压水冲溃坑底(亦称为突涌)的验算 15
4.1.1 抗突涌安全性检算 15
4.2 地基加固 16
4.2.1 基坑加固体的平面布置 16
4.2.2 坑内被动区的土体加固方案设计 17