JGJT12-2019······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······18

4 材料······19

4.1 原材料及鋼筋······19

4 2 輕骨料混凝土性能······20

5 配合比設計······29

5.1 一般要求······29

5.2 配制強度的確定······29

5.3 耐久性能和長期性能要求······30

5.4 配合比設計參數選擇······32

5.5 配合比計算與調整······36

6 結構設計計算······41

6.1 一般規定······41

6.2 正截面承載力計算的一般規定······41

6.3 受彎構件······45

6.4 受壓構件······48

6.5 受拉構件······52

6.6 受扭構件······52

6.7 受沖切構件······57

6.8 局部受壓構件······60

6.9 裂縫控制驗算······63

6.10 受彎構件的撓度驗算······67

6.11 預應力計算······69

7 構造及構件規定······73

7.1 構造規定······73

7.2 構件規定······75

8 結構構件抗震設計······80

8.1 一般規定······80

8.2 框架梁、框架柱及節點······81

8.3 剪力墻······86

9 生產與施工······89

9.1 一般規定······89

9.2 原材料進場······89

9.3 計量······90

9.4 攪拌······91

9.5 運輸······91

9.6 澆筑成型······92

9.7 養護和缺陷修補······93

10 質量檢驗和驗收······94

10.1 原材料質量檢驗······94

10.2 輕骨料混凝土性能檢驗······95

10.3 驗收······96

附錄A 大孔輕骨料混凝土······97

A.1 一般規定······97

A.2 輕粗骨料技術要求······97

A.3 配合比及試配······97

A.4 施工工藝······98

附錄B 輕骨料混凝土性能試驗方法······100

B.1 一般規定······100

B.2 干表觀密度······100

B.3 吸水率和軟化系數······102

B.4 導熱系數······103

B.5 線膨脹系數······108

本標準用詞說明······110

引用標準名錄······111

附:條文說明······113

1 總則······118

2 術語和符號······119

3 基本規定······120

4 材料······122

4.1 原材料及鋼筋······122

4.2 輕骨料混凝土性能······122

5 配合比設計······125

5.1 一般要求······125

5.2 配制強度的確定······125

5.3 耐久性能和長期性能要求······126

5.4 配合比設計參數選擇······126

5.5 配合比計算與調整······127

6 結構設計計算······129

6.1 一般規定······129

6.2 正截面承載力計算的一般規定······129

6.3 受彎構件······131

6.4 受壓構件······132

6.5 受拉構件······134

6.6 受扭構件······135

6.7 受沖切構件······136

6.8 局部受壓構件······137

6.9 裂縫控制驗算······137

6.10 受彎構件的撓度驗算······138

7 構造及構件規定······139

7.1 構造規定······139

7.2 構件規定······140

8 結構構件抗震設計······142

8.1 一般規定······142

8.2 框架梁、框架柱及節點······143

8.3 剪力墻······144

9 生產與施工······146

9.1 一般規定······146

9.2 原材料進場······146

9.3 計量······146

9.4 攪拌······147

9.5 運輸······147

9.6 澆筑成型······148

9.7 養護和缺陷修補······148

10 質量檢驗和驗收······149

10.1 原材料質量檢驗······149

10.2 輕骨料混凝土性能檢驗······149

10.3 驗收······150

附錄A 大孔輕骨料混凝土······151