JGJ79-2012：建筑地基处理技术规范

1 总则······11

2 术语和符号······12

2.1 术语······12

2.2 符号······14

3 基本规定······17

4 换填垫层······20

4.1 一般规定······20

4.2 设计······20

4.3 施工······24

4.4 质量检验······26

5 预压地基······28

5.1 一般规定······28

5.2 设计······29

5.3 施工······36

5.4 质量检验······38

6 压实地基和夯实地基······40

6.1 一般规定······40

6.2 压实地基······40

6.3 夯实地基······45

7 复合地基······52

7.1 一般规定······52

7.2 振冲碎石桩和沉管砂石桩复合地基······54

7.3 水泥土搅拌桩复合地基······60

7.4 旋喷桩复合地基······65

7.5 灰土挤密桩和土挤密桩复合地基······67

7.6 夯实水泥土桩复合地基······71

7.7 水泥粉煤灰碎石桩复合地基······73

7.8 柱锤冲扩桩复合地基······77

7.9 多桩型复合地基······79

8 注浆加固······85

8.1 一般规定······85

8.2 设计······85

8.3 施工······89

8.4 质量检验······93

9 微型桩加固······94

9.1 一般规定······94

9.2 树根桩······95

9.3 预制桩······97

9.4 注浆钢管桩······97

9.5 质量检验······98

lO 检验与监测······99

10.1 检验······99

lO.2 监测······99

附录A 处理后地基静载荷试验要点······101

附录B 复合地基静载荷试验要点······103

附录C 复合地基增强体单桩静载荷试验要点······106

本规范用词说明······108

引用标准名录······109

附:条文说明······110

1 总则······115

2 术语和符号······116

2.1 术语······116

3 基本规定······117

4 换填垫层······124

4.1 一般规定······124

4.2 设计······125

4.3 施工······136

4.4 质量检验······137

5 预压地基······139

5.1 一般规定······139

5.2 设计······141

5.3 施工······155

5.4 质量检验······157

6 压实地基和夯实地基······158

6.1 一般规定······158

6.2 压实地基······158

6.3 夯实地基······163

7 复合地基······174

7.l 一般规定······174

7.2 振冲碎石桩和沉管砂石桩复合地基······177

7.3 水泥土搅拌桩复合地基······187

7.4 旋喷桩复合地基······196

7.5 灰土挤密桩和土挤密桩复合地基······201

7.6 夯实水泥土桩复合地基······206

7.7 水泥粉煤灰碎石桩复合地基······208

7.8 柱锤冲扩桩复合地基······218

7.9 多桩型复合地基······224

8 注浆加固······233

8.1 一般规定······233

8.2 设计······234

8.3 施工······239

8.4 质量检验······245

9 微型桩加固······245

9.1 一般规定······245

9.2 树根桩······246

9.3 预制桩······247

9.4 注浆钢管桩······247

9.5 质量检验······248

10 检验与监测······249

10.1 检验······249

10.2 监测······253