暗挖主體結構工程方案專家評審前方案

目錄

第1章編制依據................................................................1

1.1編制依據...............................................................1

1.2編制原則...............................................................4

1.3施組簡介...............................................................4

第2章工程概況................................................................5

2.1總體簡介...............................................................5

2.2工程規(guī)模...............................................................5

2.3主體暗挖結構...........................................................6

2.4暗挖結構防水概述.......................................................7

2.5工程地質和水文地質.....................................................8

2.5.1工程地質條件......................................................8

2.5.2水文地質條件.....................................................9

2.6風險源識別.............................................................9

2.7工程特點..............................................................10

2.7.1周邊環(huán)境復雜，施工控制要求高，環(huán)保要求高.........................10

2.8施工難點及主要應對措施................................................10

2.8.1車站主體暗挖段下穿花園橋（一級風險源）...........................10

2.8.2車站主體暗挖段下穿重要市政管線（一級風險源）.....................11

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

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

3.1施工管理目標..........................................................12

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

3.1.2安全目標........................................................12

3.1.3質量控制目標.....................................................12

3.1.4文明施工目標....................................................12

3.1.5環(huán)境保護目標....................................................12

3.2施工部署原則..........................................................12

3.3項目經理部組織機構....................................................13

3.3.1項目部組織機構框圖...............................................13

3.3.2項目部管理人員配備..............................................13

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3.3.3花園橋工區(qū)管理人員配備..........................................14

3.3.4組織機構職能分工................................................15

3.4主要項目工程量........................................................18

3.5主體暗挖結構總體施工順序..............................................19

3.5.1主體暗挖結構施工步驟............................................20

3.6勞動力組織............................................................23

3.6.1勞務隊管理層.....................................................23

3.6.2工力投入計劃....................................................23

3.7工期計劃..............................................................24

3.7.1工程工期目標....................................................24

3.7.2車站主體暗挖結構主要施工參數....................................24

3.7.3施工進度計劃橫道圖..............................................24

第4章施工準備..............................................................25

4.1技術準備..............................................................25

4.1.1技術管理........................................................25

4.1.2測量和監(jiān)控量測準備..............................................25

4.1.3工地試驗室建設..................................................26

4.2主要機械、設備........................................................26

4.3主要原材料進場計劃....................................................27

第5章車站主體暗挖結構施工方法..............................................28

5.1導洞開挖及支護........................................................28

5.2條基及中柱下底縱梁的施工..............................................28

5.3洞內邊樁施工..........................................................28

5.3.1工藝流程........................................................28

5.3.2人工挖孔樁......................................................29

5.3.3鋼筋籠施工......................................................31

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

5.4熱力小室處豎井施工....................................................32

5.5鋼管柱施工............................................................34

5.5.1鋼管柱基本參數..................................................34

5.5.2中樁挖孔.........................................................35

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5.5.3挖孔工藝流程....................................................36

5.5.4鋼管柱施工工藝..................................................36

5.6樁頂冠梁、頂縱梁施工..................................................41

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

5.6.2頂縱梁施工......................................................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開挖導洞間土體..................................................44

5.7.4二襯扣拱施工....................................................45

5.8站廳層二襯施工........................................................46

5.9軌頂風道施工..........................................................46

5.10上層邊墻防水及鋼筋...................................................47

5.11站廳板施工...........................................................47

5.12側墻混凝土施工.......................................................51

5.12.1模板體系.......................................................51

5.12.2混凝土澆筑.....................................................52

5.12.3拆模養(yǎng)生.......................................................52

5.12.4施工注意事項...................................................53

5.13站臺層開挖支護和結構施工.............................................53

5.14樓梯模板施工.........................................................54

5.15橫通道二襯施工.......................................................