暗挖主体结构工程方案专家评审前方案

目录

第1章编制依据................................................................1

1.1编制依据...............................................................1

1.2编制原则...............................................................4

1.3施组简介...............................................................4

第2章工程概况................................................................5

2.1总体简介...............................................................5

2.2工程规模...............................................................5

2.3主体暗挖结构...........................................................6

2.4暗挖结构防水概述.......................................................7

2.5工程地质和水文地质.....................................................8

2.5.1工程地质条件......................................................8

2.5.2水文地质条件.....................................................9

2.6风险源识别.............................................................9

2.7工程特点..............................................................10

2.7.1周边环境复杂，施工控制要求高，环保要求高.........................10

2.8施工难点及主要应对措施................................................10

2.8.1车站主体暗挖段下穿花园桥（一级风险源）...........................10

2.8.2车站主体暗挖段下穿重要市政管线（一级风险源）.....................11

2.8.3地表沉降控制要求高...............................................11

第3章施工安排..............................................................12

3.1施工管理目标..........................................................12

3.1.1工期要求.........................................................12

3.1.2安全目标........................................................12

3.1.3质量控制目标.....................................................12

3.1.4文明施工目标....................................................12

3.1.5环境保护目标....................................................12

3.2施工部署原则..........................................................12

3.3项目经理部组织机构....................................................13

3.3.1项目部组织机构框图...............................................13

3.3.2项目部管理人员配备..............................................13

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3.3.3花园桥工区管理人员配备..........................................14

3.3.4组织机构职能分工................................................15

3.4主要项目工程量........................................................18

3.5主体暗挖结构总体施工顺序..............................................19

3.5.1主体暗挖结构施工步骤............................................20

3.6劳动力组织............................................................23

3.6.1劳务队管理层.....................................................23

3.6.2工力投入计划....................................................23

3.7工期计划..............................................................24

3.7.1工程工期目标....................................................24

3.7.2车站主体暗挖结构主要施工参数....................................24

3.7.3施工进度计划横道图..............................................24

第4章施工准备..............................................................25

4.1技术准备..............................................................25

4.1.1技术管理........................................................25

4.1.2测量和监控量测准备..............................................25

4.1.3工地试验室建设..................................................26

4.2主要机械、设备........................................................26

4.3主要原材料进场计划....................................................27

第5章车站主体暗挖结构施工方法..............................................28

5.1导洞开挖及支护........................................................28

5.2条基及中柱下底纵梁的施工..............................................28

5.3洞内边桩施工..........................................................28

5.3.1工艺流程........................................................28

5.3.2人工挖孔桩......................................................29

5.3.3钢筋笼施工......................................................31

5.3.4混凝土施工......................................................32

5.4热力小室处竖井施工....................................................32

5.5钢管柱施工............................................................34

5.5.1钢管柱基本参数..................................................34

5.5.2中桩挖孔.........................................................35

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5.5.3挖孔工艺流程....................................................36

5.5.4钢管柱施工工艺..................................................36

5.6桩顶冠梁、顶纵梁施工..................................................41

5.6.1冠梁施工........................................................41

5.6.2顶纵梁施工......................................................41

5.7扣拱施工..............................................................42

5.7.1扣拱初支施工....................................................42

5.7.2混凝土回填......................................................43

5.7.3开挖导洞间土体..................................................44

5.7.4二衬扣拱施工....................................................45

5.8站厅层二衬施工........................................................46

5.9轨顶风道施工..........................................................46

5.10上层边墙防水及钢筋...................................................47

5.11站厅板施工...........................................................47

5.12侧墙混凝土施工.......................................................51

5.12.1模板体系.......................................................51

5.12.2混凝土浇筑.....................................................52

5.12.3拆模养生.......................................................52

5.12.4施工注意事项...................................................53

5.13站台层开挖支护和结构施工.............................................53

5.14楼梯模板施工.........................................................54

5.15横通道二衬施工.......................................................