GB50502-2018······1

1 總則······13

2 術語······14

3 基本規定······15

4 地基工程······17

4.1 一般規定······17

4.2 素土、灰土地基······18

4.3 砂和砂石地基······18

4.4 土工合成材料地基······19

4.5 粉煤灰地基······20

4.6 強夯地基······20

4.7 注漿地基······21

4.8 預壓地基······22

4.9 砂石樁復合地基······23

4.10 高壓噴射注漿復合地基······24

4.11 水泥土攪拌樁復合地基······26

4.12 土和灰土擠密樁復合地基······27

4.13 水泥粉煤灰碎石樁復合地基······28

4.14 夯實水泥土樁復合地基······29

5 基礎工程······30

5.1 一般規定······30

5.2 無筋擴展基礎······31

5.3 鋼筋混凝土擴展基礎······32

5.4 筏形與箱形基礎······33

5.5 鋼筋混凝土預制樁······34

5.6 泥漿護壁成孔灌注樁······36

5.7 干作業成孔灌注樁······38

5.8 長螺旋鉆孔壓灌樁······40

5.9 沉管灌注樁······41

5.10 鋼樁······42

5.11 錨桿靜壓樁······43

5.12 巖石錨桿基礎······44

5.13 沉井與沉箱······45

6 特殊土地基基礎工程······48

6.1 一般規定······48

6.2 濕陷性黃土······48

6.3 凍土······51

6.4 膨脹土······54

6.5 鹽漬土······55

7 基坑支護工程······57

7.1 一般規定······57

7.2 排樁······57

7.3 板樁圍護墻······61

7.4 咬合樁圍護墻······63

7.5 型鋼水泥土攪拌墻······64

7.6 土釘墻······65

7.7 地下連續墻······66

7.8 重力式水泥土墻······69

7.9 土體加固······70

7.10 內支撐······70

7.11 錨桿······72

7.12 與主體結構相結合的基坑支護······73

8 地下水控制······75

8.1 一般規定······75

8.2 降排水······75

8.3 回灌······80

9 土石方工程······81

9.1 一般規定······81

9.2 土方開挖······81

9.3 巖質基坑開挖······84

9.4 土石方堆放與運輸······86

9.5 土石方回填······87

10 邊坡工程······89

10.1 一般規定······89

10.2 噴錨支護······89

10.3 擋土墻······91

10.4 邊坡開挖······92

附錄A 地基與基礎工程驗槽······93

本標準用詞說明······96

引用標準名錄······97

附:條文說明······99

1 總則······103

3 基本規定······104

4 地基工程······107

4.1 一般規定······107

4.2 素土、灰土地基······108

4.3 砂和砂石地基······109

4.4 土工合成材料地基······110

4.5 粉煤灰地基······111

4.6 強夯地基······111

4.7 注漿地基······112

4.8 預壓地基······113

4.9 砂石樁復合地基······115

4.10 高壓噴射注漿復合地基······115

4.11 水泥土攪拌樁復合地基······115

4.12 土和灰土擠密樁復合地基······116

4.13 水泥粉煤灰碎石樁復合地基······116

4.14 夯實水泥土樁復合地基······117

5 基礎工程······118

5.1 一般規定······118

5.2 無筋擴展基礎······119

5.3 鋼筋混凝土擴展基礎······119

5.4 筏形與箱形基礎······120

5.5 鋼筋混凝土預制樁······120

5.6 泥漿護壁成孔灌注樁······121

5.7 干作業成孔灌注樁······121

5.8 長螺旋鉆孔壓灌樁······122

5.9 沉管灌注樁······122

5.10 鋼樁······122

5.11 錨桿靜壓樁······122

5.12 巖石錨桿基礎······123

5.13 沉井與沉箱······123

6 特殊土地基基礎工程······124

6.1 一般規定······124

6.2 濕陷性黃土······124

6.3 凍土······125

6.4 膨脹土······126

6.5 鹽漬土······127

7 基坑支護工程······129

7.1 一般規定······129

7.2 排樁······129

7.3 板樁圍護墻······131

7.4 咬合樁圍護墻······131

7.5 型鋼水泥土攪拌墻······131

7.6 土釘墻······131

7.7 地下連續墻······132

7.8 重力式水泥土墻······132

7.9 土體加固······133

7.10 內支撐······133

7.11 錨桿······133

7.12 與主體結構相結合的基坑支護······133

8 地下水控制······135

8.1 一般規定······135

8.2 降排水······136

8.3 回灌······138

9 土石方工程······140

9.1 一般規定······140

9.2 土方開挖······141

9.3 巖質基坑開挖······141

9.4 土石方堆放與運輸······141

9.5 土石方回填······142

10 邊坡工程······143

10.1 一般規定······143

10.2 噴錨支護······143

10. 3 擋土墻······143

10.4 邊坡開挖······144