GBT51234-2017······1

1 總則······11

2 術語······12

3 基本規定······13

3.1 區間高架橋梁布置······13

3.2 區間跨河橋梁布置······14

3.3 橋面布置······15

3.4 橋上線路······16

3.5 附屬設施······16

3.6 橋梁景觀······16

4 材料······18

4.1 混凝土······18

4.2 鋼筋······18

4.3 鋼材······21

5 設計荷載······24

5.1 荷載分類······24

5.2 荷載取值······25

5.3 荷載組合······32

6 剛度要求······34

7 結構設計······37

7.1 一般規定······37

7.2 混凝土結構······40

7.3 鋼結構······42

7.4 鋼棍凝土結合梁······47

7.5 構造要求······53

7.6 抗震設計規定······59

8 橋梁設備系統接口······61

8.1 軌道······61

8.2 供電······62

8.3 通信與信號及其他······62

9 耐久性設計及養護設施······63

9.1 耐久性設計······63

9.2 養護設施······65

附錄A 混凝土截面的受扭塑性抵抗矩及抗扭強度計算······66

附錄B 牛腿計算······70

附錄C 樁基承臺計算······73

附錄D 正交異性橋面板疲勞強度驗算······80

本規范用詞說明······86

引用標準名錄······87

附: 條文說明······89

1 總則······93

3 基本規定······95

3.1 區間高架橋梁布置······95

3.2 區間跨河橋梁布置······97

3.3 橋面布置······97

3.4 橋上線路······99

3.5 附屬設施······100

3.6 橋梁景觀······100

4 材料······101

4.1 混凝土······101

4.2 鋼筋······101

4.3 鋼材······102

5 設計荷載······104

5.1 荷載分類······104

5.2 荷載取值······104

5.3 荷載組合······111

6 剛度要求······112

7 結構設計······115

7.1 一般規定······115

7.2 混凝土結構······117

7.3 鋼結構······121

7.4 鋼-混凝土結合梁······123

7.5 構造要求······129

7.6 抗震設計規定······131

8 橋梁設備系統接口······134

8.1 軌道······134

8.2 供電······135

9 耐久性設計及養護設施······136

9.1 耐久性設計······136

9.2 養護設施······137