CJJ/T111-2023：节段预制混凝土桥梁技术标准

CJJ/T111-2023······1

1 总则······11

2 术语和符号······12

2.1 术语······12

2.2 符号······14

3 基本规定······25

4 材料······27

4.1 主要材料······27

4.2 连接材料······28

5 持久状况承载能力极限状态计算······32

5.1 一般规定······32

5.2 受弯构件······32

5.3 受压构件······43

5.4 受扭构件······56

5.5 其他构件······61

6 持久状况正常使用极限状态和应力计算······64

6.1 一般规定······64

6.2 预应力损失计算······65

6.3 应力计算······66

6.4 抗裂、裂缝宽度及变形验算······67

7 短暂状况应力计算······69

7.1 一般规定······69

7.2 应力计算······69

8 构造设计······72

8.1 一般规定······72

8.2 主梁构造······72

8.3 体外预应力体系······77

8.4 墩柱与盖梁······80

8.5 其他构造及附属设施······83

9 主梁节段预制······85

9.1 一般规定······85

9.2 预制场地规划与布置······85

9.3 预制测量控制······86

9.4 模板系统······86

9.5 钢筋及预埋件工程······87

9.6 混凝土施工······88

9.7 节段的存放及出场验收······89

9.8 节段的运输······91

10 主梁节段拼装······92

10.1 一般规定······92

10.2 拼装设备······92

10.3 逐跨节段拼装施工······93

10.4 悬臂拼装施工······94

10.5 结构体系转换······95

10.6 拼装测量控制······96

10.7 拼装验收······97

11 墩柱、盖梁预制与拼装······99

11.1 一般规定······99

11.2 构件预制······99

11.3 墩柱、盖梁拼装及验收······101

本标准用词说明······104

引用标准名录······105

附：条文说明······107

1 总则······111

2 术语和符号······113

3 基本规定······114

4 材料······117

4.2 连接材料······117

5 持久状况承载能力极限状态计算······118

5.1 一般规定······118

5.2 受弯构件······118

5.3 受压构件······127

5.4 受扭构件······134

5.5 其他构件······135

6 持久状况正常使用极限状态和应力计算······137

6.1 一般规定······137

6.2 预应力损失计算······137

6.3 应力计算······138

6.4 抗裂、裂缝宽度及变形验算······139

7 短暂状况应力计算······141

7.1 一般规定······141

7.2 应力计算······141

8 构造设计······143

8.1 一般规定······143

8.2 主梁构造······143

8.3 体外预应力体系······148

8.4 墩柱与盖梁······150

8.5 其他构造及附属设施······152

9 主梁节段预制······153

9.2 预制场地规划与布置······153

9.3 预制测量控制······154

9.5 钢筋及预埋件工程······154

9.6 混凝土施工······155

9.8 节段的运输······155

10 主梁节段拼装······156

10.2 拼装设备······156

10.3 逐跨节段拼装施工······156

10.6 拼装测量控制······157

11 墩柱、盖梁预制与拼装······158

11.3 墩柱、盖梁拼装及验收······158