JGJT404-2018······1

1 總則······12

2 術(shù)語(yǔ)和符號(hào)······13

2.1 術(shù)語(yǔ)······13

2.2 符號(hào)······14

3 基本規(guī)定······16

3.1 一般規(guī)定······16

3.2 鑒定分類(lèi)······17

3.3 鑒定程序與要求······17

3.4 鑒定內(nèi)容與方法······19

3.5 鑒定評(píng)級(jí)······22

3.6 鑒定報(bào)告······23

4 承載能力評(píng)定······25

4.1 一般規(guī)定······25

4.2 承載力檢測(cè)要求······25

4.3 承載力評(píng)定······26

4.4 變形評(píng)定······28

4.5 承載能力級(jí)別評(píng)定······30

5 穩(wěn)定性評(píng)定······32

5.1 一般規(guī)定······32

5.2 抗滑能力評(píng)定······32

5.3 變形穩(wěn)定性評(píng)定······34

5.4 振動(dòng)影響評(píng)定······37

5.5 溶洞與襯砌穩(wěn)定性評(píng)定······38

5.6 塌陷與土體流失穩(wěn)定性評(píng)定······41

5.7 穩(wěn)定性級(jí)別評(píng)定······44

6 完整性評(píng)定······45

6.1 一般規(guī)定······45

6.2 受力巖土體完整性評(píng)定······45

6.3 圍護(hù)巖土體完整性評(píng)定······49

6.4 完整性級(jí)別評(píng)定······52

7 安全性鑒定······54

7.1 一般規(guī)定······54

7.2 級(jí)別指數(shù)······54

7.3 安全性等級(jí)鑒定······55

8 持久性鑒定······56

8.1 一般規(guī)定······56

8.2 地基勘驗(yàn)······56

8.3 指標(biāo)級(jí)別劃分······58

8.4 持久性等級(jí)鑒定······67

9 使用性鑒定······69

9.1 一般規(guī)定······69

9.2 指標(biāo)級(jí)別劃分······69

9.3 使用性等級(jí)鑒定······72

附錄A 既有建筑地基鑒定指標(biāo)······74

附錄B 建筑地基可靠性等級(jí)鑒定······76

附錄C 建筑地基鑒定報(bào)告······79

附錄D 承載力特征比值計(jì)算······80

附錄E 地基抗滑穩(wěn)定系數(shù)計(jì)算······82

附錄F 溶洞巖洞頂板安全度計(jì)算······85

附錄G 地基巖土體完整性評(píng)定表······88

附錄H 地下水測(cè)量與差異沉降······89

本標(biāo)準(zhǔn)用同說(shuō)明······91

引用標(biāo)準(zhǔn)名錄······92

附: 條文說(shuō)明······94

1 總則······97

3 基本規(guī)定······98

3.1 一般規(guī)定······98

3.2 鑒定分類(lèi)······99

3.3 鑒定程序與要求······100

3.4 鑒定內(nèi)容與方法······101

3.5 鑒定評(píng)級(jí)······102

4 承載能力評(píng)定······104

4.1 一般規(guī)定······104

4.2 承載力檢測(cè)要求······104

4.3 承載力評(píng)定······104

4.4 變形評(píng)定······105

4.5 承載能力級(jí)別評(píng)定······106

5 穩(wěn)定性評(píng)定······108

5.1 一般規(guī)定······108

5.2 抗滑能力評(píng)定······108

S.3 變形穩(wěn)定性評(píng)定······109

5.4 振動(dòng)影響評(píng)定······109

5.5 溶洞與襯砌穩(wěn)定性評(píng)定······110

5.6 塌陷與土體流失穩(wěn)定性評(píng)定······111

5.7 穩(wěn)定性級(jí)別評(píng)定······112

6 完整性評(píng)定······113

6.1 一般規(guī)定······113

6.2 受力巖土體完整性評(píng)定······113

6.4 完整性級(jí)別評(píng)定······114

7 安全性鑒定······115

7.1 一般規(guī)定······115

7.2 級(jí)別指數(shù)······115

8 持久性鑒定······116

8.1 一般規(guī)定······116

8.3 指標(biāo)級(jí)別劃分······116

8.4 持久性等級(jí)鑒定······123

9 使用性鑒定······124

9.1 一般規(guī)定······124

9.2 指標(biāo)級(jí)別劃分······124

9.3 使用性等級(jí)鑒定······125

附錄D 承載力特征比值計(jì)算······126