GB/T51224-2017：乡村道路工程技术规范

GBT51224-2017······1

1 总则······10

2 术语和符号······11

2.1 术语······11

2.2 符号······11

3 基本规定······13

3.1 道路分级······13

3.2 设计车辆······13

3.3 设计速度······14

3.4 道路建筑限界······15

3.5 防灾标准······16

4 横断面······17

4.1 一般规定······17

4.2 横断面布置······17

4.3 横断面组成及宽度······18

4.4 路拱横坡······19

5 平面、纵断面及道路交叉······20

5.1 一般规定······20

5.2 平面设计······20

5.3 纵断面设计······23

5.4 道路交叉······24

6 路基工程······27

6.1 一般规定······27

6.2 路基设计······27

6.3 路基施工与质量验收······28

6.4 路基排水······29

7 路面工程······31

7.1 一般规定······31

7.2 基层、底基层和垫层······31

7.3 沥青路面······34

7.4 水泥混凝土路面······35

7.5 天然石材路面······36

7.6 预制砌块路面······39

7.7 砂石路面······41

8 桥涵······42

8.1 一般规定······42

8.2 桥涵设计······44

9 附属设施······46

9.1 照明······46

9.2 管线······46

9.3 交通安全设施······47

9.4 绿化······47

本规范用词说明······49

引用标准名录······50

附:条文说明······52

l 总则······55

3 基本规定······56

3.1 道路分级······56

3.2 设计车辆······56

3.3 设计速度······57

3.4 道路建筑限界······57

3.5 防灾标准······58

4 横断面······59

4.1 一般规定······59

4.2 横断面布置······59

4.3 横断面组成及宽度······59

5 平面、纵断面及道路交叉······64

5.1 一般规定······64

5.2 平面设计······64

5.3 纵断面设计······67

5.4 道路交叉······69

6 路基工程······70

6.2 路基设计······70

6.3 路基施工与质量验收······70

6.4 路基排水······70

7 路面工程······72

7.2 基层、底基层和垫层······72

7.3 沥青路面······72

7.4 水泥混凝土路面······75

7.5 天然石材路面······76

7.6 预制砌块路面······77

7.7 砂石路面······78

8 桥涵······79

8.1 一般规定······79

8.2 桥涵设计······79