基坑支护设计方案.docxVIP

基坑支护设计方案

目录

1.内容描述................................................3

1.1项目背景.............................................4

1.2设计目的与意义.......................................5

1.3设计依据与范围.......................................6

2.工程概况................................................7

2.1工程基本情况.........................................7

2.2工程地质与环境条件...................................9

2.3工程施工特点........................................10

3.基坑支护方案选择.......................................11

3.1支护形式选择........................................12

3.2支护材料选择........................................13

3.3支护结构设计原则....................................14

4.基坑支护详细设计.......................................15

4.1支撑体系设计........................................16

4.1.1支撑结构类型....................................18

4.1.2支撑结构尺寸与布置..............................19

4.1.3支撑结构计算与验算..............................20

4.2拉锚体系设计........................................22

4.2.1锚杆类型与布置..................................24

4.2.2锚杆长度与间距..................................25

4.2.3锚杆受力计算与分析..............................26

4.3支护监测与检测方案..................................28

4.3.1监测目的与内容..................................29

4.3.2监测点布置与方法................................30

4.3.3数据处理与分析..................................31

5.施工工艺与操作流程.....................................32

5.1施工准备............................................34

5.1.1材料准备........................................36

5.1.2工具与设备准备..................................36

5.1.3现场布置与安全措施..............................38

5.2施工步骤............................................39

5.2.1地基处理与开挖..................................41

5.2.2支护结构施工....................................43

5.2.3拉锚体系施工....................................44

5.2.4监测与检测......................................45

5.3施工注意事项........................................47

5.3.1施工安全注意事项..............