DBT29-20-2017······1

目次······8

1 總則······21

2 術語······22

3 基本規定······25

4 巖土工程勘察要點······29

4.1 地基土類型······29

4.2 地下水類型與劃分······31

4.3 勘察階段與工作量布置······32

4.4 室內試驗和原位測試······34

4.5 勘察報告······38

5 地基計算······39

5.1 基礎埋置深度······39

5.2 承載力計算······40

5.3 變形計算······47

5.4 穩定性計算······50

6 邊坡穩定······53

6.1 一般規定······53

6.2 抗剪強度指標······53

6.3 邊坡設計······54

6.4 邊坡穩定驗算······56

6.5 保證邊坡穩定的措施······63

7 地基處理······65

7.1 一般規定······65

7.2 復合地基計算······67

7.3 墊層法······74

7.4 振動壓密法······79

7.5 小能量連續強夯法······80

7.6 砂石樁法······82

7.7 水泥上攪拌法······85

7.8 堆載預壓法······89

7.9 真空預壓法······96

7.10 真空預壓聯合堆載預壓法······104

7.11 剛性樁復合地基······104

7.12 多樁型復合地基······107

7.13 路基處理······108

8 軟弱地基······113

8.1 一般規定······113

8.2 軟弱地基設計······114

8.3 建筑設計措施······114

8.4 結構設計措施······116

8.5 大面積地面荷載······118

8.6 施工措施······120

9 淺基礎······121

9.1 一般規定······121

9.2 無筋擴展基礎······122

9.3 擴展基礎······124

9.4 柱下條形基礎······136

9.5 筏形基礎······138

10 樁基礎······150

10.1 一般規定······150

10.2 樁基構造······152

10.3 樁頂荷載計算······153

10.4 樁基豎向承載力計算······154

10.5 樁基沉降計算······159

10.6 樁基水平承載力計算······164

10.7 承臺計算與構造······164

10.8 減沉復合樁基礎······173

10.9 灌注樁施工······178

10.10 預制樁施工······187

10.11 承臺施工······191

11 基坑工程······192

11.1 一般規定······192

11.2 土壓力與水壓力······196

11.3 支擋式支護結構構造要求······199

11.4 支擋式支護結構設計計算······201

11.5 土層錨桿······211

11.6 基坑工程逆作法······213

11.7 巖體基坑工程······215

11.8 水泥土支護結構······216

11.9 地下水控制······218

11.10 防連續倒塌設計原則······221

11.11 基坑變形控制······224

11.12 基坑工程監測······225

12 盾構隧道工程······228

12.1 一般規定······228

12.2 隧道勘察······230

12.3 隧道結構設計······230

12.4 盾構隧道土體加固······235

12.5 盾構機掘進······243

12.6 盾構機軸線控制······245

12.7 盾構機糾偏量的控制······246

12.8 特殊地段施工······247

12.9 壁后注漿······247

12.10 隧道防水······250

12.11 盾構法隧道施工質量標準······251

13 頂管工程······253

13.1 一般規定······253

13.2 頂管管材······254

13.3 頂管工作井設計······262

13.4 頂管機選型······262

13.5 頂管頂力計算······264

13.6 頂進方法的選擇······265

13.7 工作坑······266

13.8 頂進······269

13.9 減阻與注漿······273

13.10 中繼間······274

13.11 頂管允許偏差······274

14 市政工程地基基礎······276

14.1 一般規定······276

14.2 橋涵基礎······276

14.3 板樁岸壁······278

14.4 加筋土擋土墻······284

14.5 重力式擋土墻······287

14.6 管道基礎······290

14.7 沉井······292

14.8 邊坡穩定······296

15 港灣工程地基基礎······297

15.1 一般規定······297

15.2 地基承載力······298

15.3 土坡和地基穩定······307

15.4 地基沉降······313

15.5 樁基工程······317

16 場地與地基抗震······328

16.1 一般規定······328

16.2 場地······328

16.3 場地反應譜······330

16.4 場地穩定性······331

16.5 地基抗震······334

17 現場檢驗與監測······336

17.1 一般規定······336

17.2 基槽的檢驗與監測······337

17.3 基坑與地下工程的檢驗與監測······337

17.4 樁基礎檢驗與監測······341

17.5 建筑物沉降觀測······344

附錄A 巖土基本變量統計參數的確定方······346

附錄B 豎向荷載作用下地基承載力系數······348

附錄C 淺層平板載荷試驗要點······349

附錄D 沉降計算等效深度······352

附錄E 復合地基靜載荷試驗······353

附錄F 室內水泥土抗壓強度試驗要點······358

附錄G 水泥土攪拌樁抽芯檢測試驗要點······361

附錄H 石灰土處理層厚度計算圖······363

附錄J 復合配筋預應力混凝土樁配筋表及承載力計算······364

附錄K 單樁豎向靜載荷試驗要點······368

附錄L 單樁水平載荷試驗要點······372

附錄M 矩形支護樁配筋表······375

附錄N 基坑支護結構計算要點······376

附錄P 自由變形的彈性均質圓環內力計算······385

附錄Q 頂管允許頂力計算方法······387

附錄R 擋土墻土壓力計一算······389

附錄S 地基承載力系數表······393

附錄T 樁的單位面積極限側摩阻力與極限端阻力標準值······399

附錄U 水平力作用下樁的計算······407

附錄V 各類土動剪切模量比、阻尼比與剪應變關系······423

本規范用詞說明······427

引用標準名錄······428

目次······435

3 基本規定······440

4 巖土工程勘察要點······441

4.1 地基土類型······441

4.2 地下水類型與劃分······441

4.3 勘察階段與工作量布置······442

4.4 室內試驗和原位測試······443

4.5 勘察報告······444

5 地基計算······445

5.1 基礎埋置深度······445

5.2 承載力計算······446

5.3 變形計算······453

6 邊坡穩定······455

6.1 一般規定······455

6.2 抗剪強度指標······456

6.3 邊坡設計······457

6.4 邊坡穩定驗算······458

6.5 保證邊坡穩定的措施······461

7 地基處理······462

7.1 一般規定······462

7.2 復合地基計算······462

7.3 墊層法······469

7.4 振動壓密法······476

7.5 小能量連續強夯法······477

7.6 砂石樁法······478

7.8 堆載預壓法······481

7.9 真空預壓法······485

7.10 真空預壓聯合堆載預壓法······488

7.13 路基處理······489

8 軟弱地基······492

8.1 一般規定······492

8.3 建筑設計措施······492

8.4 結構設計措施······493

8.5 大面積地面荷載······493

8.6 施工措施······494

9 淺基礎······495

9.2 無筋擴展基礎······495

9.3 擴展基礎······495

9.4 柱下條形基礎······500

9.5 筏形基礎······501

10 樁基礎······519

10.1 一般規定······519

10.4 樁基豎向承載力計算······525

10.5 樁基沉降計算······528

10.8 減沉復合樁基礎······531

10.9 灌注樁施工······535

10.10 預制樁施工······536

11 基坑工程······540

11.1 一般規定······540

11.2 土壓力與水壓力······540

11.3 支擋式支護結構構造要求······542

11.4 支擋式支護結構設計計算······543

11.8 水泥土支護結構······546

11.9 地下水控制······548

11.10 防連續倒塌設計原則······549

11.11 基坑變形控制······559

12 盾構隧道工程······567

12.1 一般規定······567

12.2 隧道勘察······567

12.3 隧道結構設計······567

12.4 盾構隧道土體加固······576

12.5 盾構機掘進······576

12.6 盾構機軸線控制······577

12.7 盾構機糾偏量的控制······579

12.8 特殊地段施工······580

12.9 壁后注漿······582

12.10 隧道防水······584

13 頂管工程······586

13.1 一般規定······586

13.2 頂管管材······588

13.3 頂管工作井設計······590

13.5 頂管項力計算······591

13.6 頂進方法的選擇······592

13.8 頂進······592

11.9 減阻與注漿······593

13.10 中繼間······593

13.11 頂管允許偏差······594

14 市政工程地基基礎······595

14.1 一般規定······595

14.2 橋涵基礎······595

14.3 板樁岸壁······597

14.4 加筋土擋土墻······599

14.5 重力式擋土墻······600

14.6 管道基礎······601

14.7 沉井······603

14.8 邊坡穩定······605

15 港灣工程地基基礎······606

15.1 一般規定······606

15.2 地基承載力······607

15.3 土坡和地基穩定······612

15.4 地基沉降······618

15.5 樁基工程······624

16 場地與地基抗震······631

16.1 一般規定······631

16.2 場地······631

16.3 場地反應譜······632

16.4 場地穩定性······632

17 現場檢驗與監測······633

17.1 一般規定······633

17.2 基槽的檢驗與監測······633

17.3 基坑與地下工程的檢驗與監測······634

17.4 樁基礎檢驗與監測······635

17.5 建筑物沉降觀測······638