JGJT438-2018······1

1 總則······11

2 術語和符號······12

2.1 術語······12

2.2 符號······13

3 基本規(guī)定······15

4 專項勘察······17

4.1 一般規(guī)定······17

4.2 專項室內試驗······17

4.3 原位熱響應測試······17

5 能源樁傳熱性能測試······19

5.1 一般規(guī)定······19

5.2 單樁熱響應測試······19

5.3 單樁換熱功率測試······20

5.4 熱負荷-結構荷載耦合試驗······21

6 能源樁構造和材料······22

6.1 一般規(guī)定······22

6.2 能源樁換熱器構造······22

6.3 能源樁管材與循環(huán)工質······25

7 樁基地熱能利用系統(tǒng)設計計算······27

7.1 一般規(guī)定······27

7.2 系統(tǒng)設計計算······27

8 能源樁結構設計計算······30

8.1 一般規(guī)定······30

8.2 溫度作用效應······30

8.3 單樁豎向承載力······31

9 能源樁施工與檢測······33

9.1 一般規(guī)定······33

9.2 換熱管賂的安裝與保護······33

9.3 換熱管路的壓力測試及沖洗······35

10 施工質量驗收······37

10.1 一般規(guī)定······37

10.2 施工前檢驗······37

10.3 施工中檢驗······37

10.4 施工后檢驗······38

10.5 工程驗收······38

11.1 一般規(guī)定······40

11.2 運行監(jiān)測······40

11.3 系統(tǒng)維護······41

附錄A 巖土體熱物性參數(shù)參考值······42

附錄B 能源樁熱響應測試要求······45

附錄C 能源樁熱負荷-結構荷載耦合試驗要求······46

本標準用同說明······48

引用標準名錄······49

附:條文說明······50

1 總則······54

3 基本規(guī)定······56

4 專項勘察······59

4.1 一般規(guī)定······59

4.2 專項室內試驗······60

4.3 原位熱響應測試······62

5 能源樁傳熱性能測試······63

5.1 一般規(guī)定······63

5.2 單樁熱響應測試······63

5.3 單樁換熱功率測試······65

5.4 熱負荷-結構荷載耦合試驗······65

6 能源樁構造和材料······66

6.1 一般規(guī)定······66

6.2 能源樁換熱器構造······67

6.3 能源樁管材與循環(huán)工質······68

7 樁基地熱能利用系統(tǒng)設計計算······70

7.1 一般規(guī)定······70

7.2 系統(tǒng)設計計算······71

8 能源樁結構設計計算······74

8.1 一般規(guī)定······74

8.2 溫度作用效應······75

8.3 單樁豎向承載力······76

9 能源樁施工與檢測······81

9.1 一般規(guī)定······81

9.2 換熱管路的安裝與保護······81

9.3 換熱管路的壓力測試及沖洗······82

10 施工質量驗收······84

10.1 一般規(guī)定······84

10.2 施工前檢驗······84

10.3 施工中檢驗······84

10.4 施工后檢驗······85

10.5 工程驗收······85

11 運行與維護······86

11.1 一般規(guī)定······86

11.2 運行監(jiān)測······86

11.3 系統(tǒng)維護······88

附錄A 巖土體熱物性參數(shù)參考值······90