11······1

1 總則······12

2 術語和符號······13

2.1 術語······13

2.2 符號······14

3 基本規定······16

4 材料······19

5 焊接連接構造設計······22

5.1 一般規定······22

5.2 焊縫坡口形式和尺寸······24

5.3 焊縫計算厚度······26

5.4 組焊構件焊接節點······37

5.5 防止板材產生層狀撕裂的節點、選材和工藝措施······42

5.6 構件制作與工地安裝焊接構造設計······44

5.7 承受動載與抗震的焊接構造設計······52

6 焊接工藝評定······56

6.1 一般規定······56

6.2 焊接工藝評定替代規則······59

6.3 重新進行工藝評定的規定······62

6.4 試件和檢驗試樣的制備······65

6.5 試件和試樣的試驗與檢驗······74

6.6 免予焊接工藝評定······79

7 焊接工藝······83

7.] 母材準備······83

7.2 焊接材料要求······84

7.3 焊接接頭的裝配要求······88

7.4 定位焊······89

7.5 焊接環境······89

7.6 預熱和道間溫度控制······90

7.7 焊后消氫熱處理······91

7.8 焊后消應力處理······91

7.9 引弧板、引出板和襯墊······92

7.10 焊接工藝技術要求······93

7.11 焊接變形的控制······94

7.12 返修焊······95

7.13 焊件矯正······96

7.14 焊縫清根······96

7.15 臨時焊縫······97

7.16 引弧和熄弧······97

7.17 電渣焊和氣電立焊······97

8 焊接檢驗······99

8.1 一般規定······99

8.2 承受靜荷載結構焊接質量的檢驗······103

8.3 需疲勞驗算結構的焊縫質量檢驗······107

9 焊接補強與加固······112

附錄A 鋼結構焊接接頭坡口形式、尺寸和標記方法······116

附錄B 鋼結構焊接工藝評定報告格式······134

附錄C 箱形柱(梁) 內隔板電渣焊縫焊透寬度的測量······149

本規程用詞說明······151

引用標準名錄······152

附: 條文說明······154

1 總則······158

2 術語和符號······159

2.1 術語······159

2.2 符號······159

3 基本規定······160

4 材料······164

5焊接連接構造設計······170

5.1 一般規定······170

5.2 焊縫坡口形式和尺寸······173

5.3 焊縫計算厚度······173

5.4 組焊構件焊接節點······174

5.5 防止板材產生層狀撕裂的節點、選材和工藝措施······175

5.6 構件制作與工地安裝焊接構造設計······175

5.7 承受動載與抗震的焊接構造設計······176

6 焊接工藝評定······178

6.1 一般規定······178

6.2 焊接工藝評定替代規則······179

6.3 重新進行工藝評定的規定······179

6.5 試件和試樣的試驗與檢驗······179

6.6 免予焊接工藝評定······180

7 焊接工藝······181

7.1 母材準備······181

7.2 焊接材料要求······181

7.3 焊接接頭的裝配要求······182

7.4 定位焊······182

7.5 焊接環境······182

7.6 預熱和道間溫度控制······183

7.7 焊后消氫熱處理······184

7.8 焊后消應力處理······184

7.9 引弧板、引出板和襯墊······185

7.10 焊接工藝技術要求······185

7.11 焊接變形的控制······186

7.12 返修焊······186

7.13 焊件矯正······187

7.14 焊縫清根······187

7.15 臨時焊縫······187

7.16 引弧和熄弧······187

7.17 電渣焊和氣電立焊······188

8 焊接檢驗······189

8.1 一般規定······189

8.2 承受靜荷載結構焊接質量的檢驗······191

8.3 需疲勞驗算結構的焊縫質量檢驗······194

9 焊接補強與加固······195