GB/T51438-2021······1

1 總則······13

2 術語和符號······14

2.1 術語······14

2.2 符號······15

3 基本規定······21

3.1 一般規定······21

3.2 盾構隧道平縱斷面設計······23

3.3 盾構隧道內凈空確定······24

3.4 盾構隧道防火設計······26

3.5 盾構隧道耐久性設計······27

3.6 盾構選型······28

4 工程勘察及建（構）筑物調查······30

4.1 工程勘察······30

4.2 建（構）筑物調查······35

5 荷載······37

5.1 荷載分類及荷載效應組合······37

5.2 永久荷載······40

5.3 可變荷載······41

5.4 偶然荷載作用······41

6 材料······43

6.1 一般規定······43

6.2 混凝土······43

6.3 鋼材······43

7 隧道結構計算······45

7.1 一般規定······45

7.2 橫向內力計算······45

7.3 縱向內力計算······50

7.4 變形計算······50

7.5 抗浮穩定性驗算······51

7.6 管片接頭計算······52

7.7 二次襯砌計算······54

7.8 大斷面及特殊隧道計算······54

8 隧道襯砌······56

8.1 一般規定······56

8.2 管片構造······56

8.3 管片拼裝······58

8.4 鋼筋混凝土管片······59

8.5 鋼管片······61

8.6 二次襯砌······62

9 抗震設計······63

9.1 一般規定······63

9.2 設計地震動參數······65

9.3 抗震計算······67

9.4 抗震、減震措施······69

10 防水與防腐蝕······71

10.1 一般規定······71

10.2 防水等級和防水標準······71

10.3 管片結構自防水······72

10.4 管片接縫防水······72

10.5 防腐蝕······73

11 壁后注漿······75

12 地層加固及施工輔助措施······76

12.1 一般規定······76

12.2 注漿加固······77

12.3 深層攪拌加固······77

12.4 高壓噴射注漿加固······78

12.5 地層凍結加固······78

12.6 降水······79

13 附屬結構······80

13.1 盾構工作井······80

13.2 聯絡通道······81

13.3 排水泵站······81

13.4 風井······82

13.5 內部結構······82

13.6 其他附屬結構······82

14 周邊環境保護及風險控制······84

14.1 地表沉降······84

14.2 建（構）筑物保護······84

14.3 風險控制······85

15 工程監測······86

15.1 一般規定······86

15.2 監測范圍······86

15.3 監測項目······87

15.4 監測點布設······88

15.5 監測頻率······89

15.6 監測控制值······90

附錄A 反應位移法······92

附錄B 靜力法······101

附錄C 時程分析法······105

本標準用詞說明······108

引用標準名錄······109

附：條文說明······111

1 總則······116

3 基本規定······117

3.1 一般規定······117

3.2 盾構隧道平縱斷面設計······121

3.3 盾構隧道內凈空確定······127

3.4 盾構隧道防火設計······128

3.5 盾構隧道耐久性設計······132

3.6 盾構選型······134

4 工程勘察及建（構）筑物調查······139

4.1 工程勘察······139

4.2 建（構）筑物調查······142

5 荷載······143

5.1 荷載分類及荷載效應組合······143

5.2 永久荷載······147

5.3 可變荷載······150

5.4 偶然荷載作用······152

6 材料······153

6.1 一般規定······153

6.2 混凝土······154

6.3 鋼材······154

7 隧道結構計算······155

7.1 一般規定······155

7.2 橫向內力計算······155

7.3 縱向內力計算······159

7.4 變形計算······160

7.5 抗浮穩定性驗算······161

7.6 管片接頭計算······161

7.7 二次襯砌計算······163

7.8 大斷面及特殊隧道計算······164

8 隧道襯砌······168

8.1 一般規定······168

8.2 管片構造······169

8.3 管片拼裝······172

8.4 鋼筋混凝土管片······175

8.6 二次襯砌······175

9 抗震設計······179

9.1 一般規定······179

9.2 設計地震動參數······182

9.3 抗震計算······184

9.4 抗震、減震措施······188

10 防水與防腐蝕······192

10.1 一般規定······192

10.2 防水等級和防水標準······192

10.3 管片結構自防水······192

10.4 管片接縫防水······193

10.5 防腐蝕······194

11 壁后注漿······195

12 地層加固及施工輔助措施······198

12.1 一般規定······198

12.2 注漿加固······202

12.3 深層攪拌加固······202

12.4 高壓噴射注漿加固······202

12.5 地層凍結加固······203

13 附屬結構······204

13.1 盾構工作井······204

13.2 聯絡通道······206

13.3 排水泵站······206

13.4 風井······207

13.5 內部結構······207

13.6 其他附屬結構······207

14 周邊環境保護及風險控制······209

14.1 地表沉降······209

14.3 風險控制······209

15 工程監測······210

15.1 一般規定······210

15.2 監測范圍······210

15.6 監測控制值······211

附錄A 反應位移法······212

附錄B 靜力法······217

附錄C 時程分析法······219