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发表于 2009-06-27 09:29 |只看楼主

YT!]±H?Ýbbs.3c3t.comå%ÍÌ
韩熠1YT!]±H?Ýbbs.3c3t.comå%ÍÌ
王跟民2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

（ 1.陕西交通技术咨询有限公司，陕西西安 710068；YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.陕西省林业勘察设计院，陕西西安 710082；）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

［摘要］本文概略分析了影响隧道视距的因素，计算了隧道横净距，建立了隧道视距曲线半径的概念，提出了隧道线形设计和改善交通安全的建议。
［关键词］隧道横净距视距半径加宽
1、视距影响因素及隧道建筑限界
公路隧道几何设计、车辆几何尺寸、驾驶员、照明及自然环境、交通组成等因素，均影响隧道视距，几何设计主要包括隧道建筑限界、内轮廓、平纵线形、路拱等。为便于讨论，依据《公路工程技术标准》（JTG B01-2003）、《公路隧道设计规范》（JTG D70-2004）和《公路项目安全性评价指南》（JTG B05-2004）（分别简称《标准》、《规范》、《指南》），限定相关边界。高速公路和一级公路隧道建筑限界及横断面组成尺寸见表1，二级以下公路隧道建筑限界及横断面组成尺寸见表2。

表1YT!]±H?Ýbbs.3c3t.comå%ÍÌ
YT!]±H?Ýbbs.3c3t.comå%ÍÌ
高速、一级公路隧道建筑限界横断面组成一览表（单位：米）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

序号YT!]±H?Ýbbs.3c3t.comå%ÍÌ

设计速度（km/h）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

车道宽度WYT!]±H?Ýbbs.3c3t.comå%ÍÌ

侧向宽度LYT!]±H?Ýbbs.3c3t.comå%ÍÌ

最小检修道JYT!]±H?Ýbbs.3c3t.comå%ÍÌ

建筑限界净空YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧LLYT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧LRYT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧YT!]±H?Ýbbs.3c3t.comå%ÍÌ

净宽YT!]±H?Ýbbs.3c3t.comå%ÍÌ

净高YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.75×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

11.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.75×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

10.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.75×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

10.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.75×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

9.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

表2YT!]±H?Ýbbs.3c3t.comå%ÍÌ
二级以下等级公路隧道建筑限界横断面组成一览表（单位：米）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

序号YT!]±H?Ýbbs.3c3t.comå%ÍÌ

设计速度（km/h）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

车道宽度WYT!]±H?Ýbbs.3c3t.comå%ÍÌ

侧向宽度LYT!]±H?Ýbbs.3c3t.comå%ÍÌ

最小人行道JYT!]±H?Ýbbs.3c3t.comå%ÍÌ

建筑限界净空YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧LLYT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧LRYT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧YT!]±H?Ýbbs.3c3t.comå%ÍÌ

净宽YT!]±H?Ýbbs.3c3t.comå%ÍÌ

净高YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80二级YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.75×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

10.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60二级YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.50×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

9.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40二级YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.50×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

9.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40三级YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.50×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

9.00 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30三级YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.25×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

7.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20四级YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.00×2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

7.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.50 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

二级公路设计速度为80和60公里/小时，隧道内人行道（兼检修道）最小宽度为1.0米，净宽分别为11米和10米，大于《标准》中最小规定值，本文采用《规范》规定值；四级公路，隧道建筑限界净宽为7.0米，小于《标准》规定最小值，本文采用《标准》7.5米的建筑限界。
2、标准车型与视距
计算车型分别选择小客车和货车，小客车宽度B为1.8米，货车宽度B为2.5米，驾驶员位于车辆左侧0.5米处。前方障碍物高均为0.1米。停车视距以小客车为标准，目高为1.2米，自驾驶员发现障碍物起，至车辆在障碍物前安全停止，所需的最短行车距离即为小客车停车视距，简称停车视距。计算货车停车视距时，驾驶员目高为2.0米。若运行速度大小与设计速度相等，依据《标准》和《指南》规定，停车视距和货车停车视距规定见表3和表4所示。

表3YT!]±H?Ýbbs.3c3t.comå%ÍÌ
YT!]±H?Ýbbs.3c3t.comå%ÍÌ
YT!]±H?Ýbbs.3c3t.comå%ÍÌ
YT!]±H?Ýbbs.3c3t.comå%ÍÌ
高速、一级公路停车视距及货车停车视距（单位：米）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

序号YT!]±H?Ýbbs.3c3t.comå%ÍÌ

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

《标准》修正停车货车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

7％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

8％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

9％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

210YT!]±H?Ýbbs.3c3t.comå%ÍÌ

280YT!]±H?Ýbbs.3c3t.comå%ÍÌ

245YT!]±H?Ýbbs.3c3t.comå%ÍÌ

417YT!]±H?Ýbbs.3c3t.comå%ÍÌ

265YT!]±H?Ýbbs.3c3t.comå%ÍÌ

273YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

160YT!]±H?Ýbbs.3c3t.comå%ÍÌ

205YT!]±H?Ýbbs.3c3t.comå%ÍÌ

180YT!]±H?Ýbbs.3c3t.comå%ÍÌ

301YT!]±H?Ýbbs.3c3t.comå%ÍÌ

190YT!]±H?Ýbbs.3c3t.comå%ÍÌ

195YT!]±H?Ýbbs.3c3t.comå%ÍÌ

200YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

110YT!]±H?Ýbbs.3c3t.comå%ÍÌ

140YT!]±H?Ýbbs.3c3t.comå%ÍÌ

125YT!]±H?Ýbbs.3c3t.comå%ÍÌ

202YT!]±H?Ýbbs.3c3t.comå%ÍÌ

130YT!]±H?Ýbbs.3c3t.comå%ÍÌ

132YT!]±H?Ýbbs.3c3t.comå%ÍÌ

136YT!]±H?Ýbbs.3c3t.comå%ÍÌ

139YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

75YT!]±H?Ýbbs.3c3t.comå%ÍÌ

90YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

89YT!]±H?Ýbbs.3c3t.comå%ÍÌ

91YT!]±H?Ýbbs.3c3t.comå%ÍÌ

93YT!]±H?Ýbbs.3c3t.comå%ÍÌ

95YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

表4

二、三、四级公路停车视距及货车停车视距（单位：米）

序号YT!]±H?Ýbbs.3c3t.comå%ÍÌ

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

停车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

《标准》下坡修正停车货车视距YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

7％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

8％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

9％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

110YT!]±H?Ýbbs.3c3t.comå%ÍÌ

140YT!]±H?Ýbbs.3c3t.comå%ÍÌ

125YT!]±H?Ýbbs.3c3t.comå%ÍÌ

202YT!]±H?Ýbbs.3c3t.comå%ÍÌ

130YT!]±H?Ýbbs.3c3t.comå%ÍÌ

132YT!]±H?Ýbbs.3c3t.comå%ÍÌ

136YT!]±H?Ýbbs.3c3t.comå%ÍÌ

139YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

75YT!]±H?Ýbbs.3c3t.comå%ÍÌ

90YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

89YT!]±H?Ýbbs.3c3t.comå%ÍÌ

91YT!]±H?Ýbbs.3c3t.comå%ÍÌ

93YT!]±H?Ýbbs.3c3t.comå%ÍÌ

95YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

50YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

50YT!]±H?Ýbbs.3c3t.comå%ÍÌ

50YT!]±H?Ýbbs.3c3t.comå%ÍÌ

50YT!]±H?Ýbbs.3c3t.comå%ÍÌ

50YT!]±H?Ýbbs.3c3t.comå%ÍÌ

50YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

《指南》修正了货车停车视距，纵坡大于2％，半径小于400米路段，应核查修正。上坡路段可以减小货车停车视距，下坡路段必须增大货车停车视距。
3、公路隧道横净距
当检修道（人行道，下同）高度大于0.1米，或检修道高度影响视线时，横净距（m1）应计算到检修道边缘；当隧道内壁布设有关设施影响视线时，横净距(m2)应计算至建筑限界边缘处；当隧道内壁未布设隧道设施或不影响视线时，横净距(m3)可计算至隧道内轮廓处。无论车辆在那个车道行驶，均假定车辆行驶轨迹与车道中心线重合，并假定视高处建筑限界至内轮廓距离为0.25米。依行驶方向为准，左转弯曲线隧道应计算左车道横净距，右转弯曲线应计算右车道横净距。
左车道横净距m＝(W/2－B)/2＋0.5＋L左[＋J左＋0.25]
………………………3-1
右车道横净距m＝(W/2＋B)/2－0.5＋L右[＋J右＋0.25]
………………………3-2
隧道提供的最大横净距计算结果见表5。左侧车道横净距小于右侧车道横净距，左转弯曲线隧道较右转弯曲线隧道不利于安全；左转弯隧道，为小客车提供的横净距大于为货车提供的横净距；右转弯曲线隧道，为小客车提供的横净距小于为货车提供的横净距。
表5

公路隧道提供的最大横净距（单位：m）

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

m1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

m2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

m3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.225 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.525 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.275 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.225 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.525 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.275 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.725 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.275 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.725 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.775 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.125 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.725 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.775 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.125 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.225 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.225 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.025 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.475 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.125 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.275 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.850 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.500 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.650 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.000 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.850 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.500 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.650 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.000 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.100 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.900 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.600 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.400 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.350 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.000 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.150 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.500 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.600 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.400 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40三YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.600 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.400 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.350 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.000 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.150 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.500 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.600 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.400 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30三YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.475 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.125 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.275 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.725 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.375 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.525 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.875 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.975 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.625 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.775 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.125 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20四YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.600 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.400 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.850 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.500 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.650 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.000 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.100 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.750 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2.900 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3.250 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4、隧道视距平曲线半径
假定曲线隧道位于同一曲率半径的圆曲线上，曲率半径与视距、横净距的关系式为：
　……………………………4-1
式中： —实际横净距，米；
—计算车道中线处的曲线半径，米；
—（货车）停车视距，米。
依据cosα＝1－α2/2！＋α4/4！－……+(-1)nα2n/(2n)!，由公式4-1推导简化公式得4-2，可直接计算平曲线半径。两公式计算很相近，后者比前者一般大0.3～0.5米，误差可以忽略。
………………………………………4-2
隧道提供横净距越小，要求平曲线半径越大，比照路线规范，视距采用《标准》规定视距，可将检修道（m1）对应的曲率半径R1定义为隧道安全视距半径，将建筑限界(m2)对应曲率半径R2定义为隧道一般视距半径，将隧道内轮廓(m3)对应的曲率半径R3定义为隧道最小视距半径。
高速公路、一级公路为分离式单向行驶，只需考虑制动停车视距。双向行驶的二、三、四级公路，隧道路段一般禁止超车，也只考虑停车视距。表6显示货车视距半径一般大于小客车视距半径，拟定隧道曲线半径时，应采用货车视距曲线半径，但应区分左、右转弯曲线。同时考虑《指南》视距要求，确定隧道线形时，应参照表7拟定平面参数。

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

表6YT!]±H?Ýbbs.3c3t.comå%ÍÌ
YT!]±H?Ýbbs.3c3t.comå%ÍÌ
公路隧道视距平曲线半径计算值（单位：米）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

安全视距半径R1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

一般视距半径R2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

最小视距半径R3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右侧车道YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

小车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

货车YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2478YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4002YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1564YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1936YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1853YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2858YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1289YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1622YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1709YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2610YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1218YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1539YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1620YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2492YT!]±H?Ýbbs.3c3t.comå%ÍÌ

977YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1117YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1174YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1705YT!]±H?Ýbbs.3c3t.comå%ÍÌ

795YT!]±H?Ýbbs.3c3t.comå%ÍÌ

926YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1076YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1543YT!]±H?Ýbbs.3c3t.comå%ÍÌ

749YT!]±H?Ýbbs.3c3t.comå%ÍÌ

876YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

766YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1202YT!]±H?Ýbbs.3c3t.comå%ÍÌ

500YT!]±H?Ýbbs.3c3t.comå%ÍÌ

579YT!]±H?Ýbbs.3c3t.comå%ÍÌ

555YT!]±H?Ýbbs.3c3t.comå%ÍÌ

822YT!]±H?Ýbbs.3c3t.comå%ÍÌ

401YT!]±H?Ýbbs.3c3t.comå%ÍÌ

473YT!]±H?Ýbbs.3c3t.comå%ÍÌ

508YT!]±H?Ýbbs.3c3t.comå%ÍÌ

744YT!]±H?Ýbbs.3c3t.comå%ÍÌ

376YT!]±H?Ýbbs.3c3t.comå%ÍÌ

446YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

356YT!]±H?Ýbbs.3c3t.comå%ÍÌ

556YT!]±H?Ýbbs.3c3t.comå%ÍÌ

232YT!]±H?Ýbbs.3c3t.comå%ÍÌ

268YT!]±H?Ýbbs.3c3t.comå%ÍÌ

258YT!]±H?Ýbbs.3c3t.comå%ÍÌ

380YT!]±H?Ýbbs.3c3t.comå%ÍÌ

186YT!]±H?Ýbbs.3c3t.comå%ÍÌ

219YT!]±H?Ýbbs.3c3t.comå%ÍÌ

236YT!]±H?Ýbbs.3c3t.comå%ÍÌ

344YT!]±H?Ýbbs.3c3t.comå%ÍÌ

175YT!]±H?Ýbbs.3c3t.comå%ÍÌ

206YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

680YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1042YT!]±H?Ýbbs.3c3t.comå%ÍÌ

500YT!]±H?Ýbbs.3c3t.comå%ÍÌ

579YT!]±H?Ýbbs.3c3t.comå%ÍÌ

469YT!]±H?Ýbbs.3c3t.comå%ÍÌ

679YT!]±H?Ýbbs.3c3t.comå%ÍÌ

376YT!]±H?Ýbbs.3c3t.comå%ÍÌ

446YT!]±H?Ýbbs.3c3t.comå%ÍÌ

435YT!]±H?Ýbbs.3c3t.comå%ÍÌ

625YT!]±H?Ýbbs.3c3t.comå%ÍÌ

354YT!]±H?Ýbbs.3c3t.comå%ÍÌ

422YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

380YT!]±H?Ýbbs.3c3t.comå%ÍÌ

602YT!]±H?Ýbbs.3c3t.comå%ÍÌ

265YT!]±H?Ýbbs.3c3t.comå%ÍÌ

301YT!]±H?Ýbbs.3c3t.comå%ÍÌ

247YT!]±H?Ýbbs.3c3t.comå%ÍÌ

361YT!]±H?Ýbbs.3c3t.comå%ÍÌ

193YT!]±H?Ýbbs.3c3t.comå%ÍÌ

226YT!]±H?Ýbbs.3c3t.comå%ÍÌ

227YT!]±H?Ýbbs.3c3t.comå%ÍÌ

328YT!]±H?Ýbbs.3c3t.comå%ÍÌ

180YT!]±H?Ýbbs.3c3t.comå%ÍÌ

213YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

125YT!]±H?Ýbbs.3c3t.comå%ÍÌ

250YT!]±H?Ýbbs.3c3t.comå%ÍÌ

83YT!]±H?Ýbbs.3c3t.comå%ÍÌ

114YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

156YT!]±H?Ýbbs.3c3t.comå%ÍÌ

63YT!]±H?Ýbbs.3c3t.comå%ÍÌ

89YT!]±H?Ýbbs.3c3t.comå%ÍÌ

77YT!]±H?Ýbbs.3c3t.comå%ÍÌ

139YT!]±H?Ýbbs.3c3t.comå%ÍÌ

59YT!]±H?Ýbbs.3c3t.comå%ÍÌ

83YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40三YT!]±H?Ýbbs.3c3t.comå%ÍÌ

125YT!]±H?Ýbbs.3c3t.comå%ÍÌ

250YT!]±H?Ýbbs.3c3t.comå%ÍÌ

83YT!]±H?Ýbbs.3c3t.comå%ÍÌ

114YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

156YT!]±H?Ýbbs.3c3t.comå%ÍÌ

63YT!]±H?Ýbbs.3c3t.comå%ÍÌ

89YT!]±H?Ýbbs.3c3t.comå%ÍÌ

77YT!]±H?Ýbbs.3c3t.comå%ÍÌ

139YT!]±H?Ýbbs.3c3t.comå%ÍÌ

59YT!]±H?Ýbbs.3c3t.comå%ÍÌ

83YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30三YT!]±H?Ýbbs.3c3t.comå%ÍÌ

76YT!]±H?Ýbbs.3c3t.comå%ÍÌ

136YT!]±H?Ýbbs.3c3t.comå%ÍÌ

49YT!]±H?Ýbbs.3c3t.comå%ÍÌ

58YT!]±H?Ýbbs.3c3t.comå%ÍÌ

65YT!]±H?Ýbbs.3c3t.comå%ÍÌ

111YT!]±H?Ýbbs.3c3t.comå%ÍÌ

45YT!]±H?Ýbbs.3c3t.comå%ÍÌ

53YT!]±H?Ýbbs.3c3t.comå%ÍÌ

57YT!]±H?Ýbbs.3c3t.comå%ÍÌ

94YT!]±H?Ýbbs.3c3t.comå%ÍÌ

41YT!]±H?Ýbbs.3c3t.comå%ÍÌ

49YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20四YT!]±H?Ýbbs.3c3t.comå%ÍÌ

31YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40YT!]±H?Ýbbs.3c3t.comå%ÍÌ

21YT!]±H?Ýbbs.3c3t.comå%ÍÌ

18YT!]±H?Ýbbs.3c3t.comå%ÍÌ

27YT!]±H?Ýbbs.3c3t.comå%ÍÌ

33YT!]±H?Ýbbs.3c3t.comå%ÍÌ

19YT!]±H?Ýbbs.3c3t.comå%ÍÌ

17YT!]±H?Ýbbs.3c3t.comå%ÍÌ

24YT!]±H?Ýbbs.3c3t.comå%ÍÌ

29YT!]±H?Ýbbs.3c3t.comå%ÍÌ

17YT!]±H?Ýbbs.3c3t.comå%ÍÌ

15YT!]±H?Ýbbs.3c3t.comå%ÍÌ

表7

公路隧道视距平曲线半径建议值（单位：m）

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

安全视距半径R1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

一般视距半径R2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

最小视距半径R3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏曲线YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏曲线YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏曲线YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏曲线YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏曲线YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏曲线YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4005YT!]±H?Ýbbs.3c3t.comå%ÍÌ

11600YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1940YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5610YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2860YT!]±H?Ýbbs.3c3t.comå%ÍÌ

8285YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1625YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4705YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2615YT!]±H?Ýbbs.3c3t.comå%ÍÌ

7565YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1545YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4460YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2495YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6975YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3125YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1710YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4770YT!]±H?Ýbbs.3c3t.comå%ÍÌ

930YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2590YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1545YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4315YT!]±H?Ýbbs.3c3t.comå%ÍÌ

880YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2450YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1205YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3145YT!]±H?Ýbbs.3c3t.comå%ÍÌ

585YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1515YT!]±H?Ýbbs.3c3t.comå%ÍÌ

825YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2150YT!]±H?Ýbbs.3c3t.comå%ÍÌ

475YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1240YT!]±H?Ýbbs.3c3t.comå%ÍÌ

750YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1945YT!]±H?Ýbbs.3c3t.comå%ÍÌ

450YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1170YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

560YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1110YT!]±H?Ýbbs.3c3t.comå%ÍÌ

270YT!]±H?Ýbbs.3c3t.comå%ÍÌ

535YT!]±H?Ýbbs.3c3t.comå%ÍÌ

385YT!]±H?Ýbbs.3c3t.comå%ÍÌ

760YT!]±H?Ýbbs.3c3t.comå%ÍÌ

225YT!]±H?Ýbbs.3c3t.comå%ÍÌ

440YT!]±H?Ýbbs.3c3t.comå%ÍÌ

350YT!]±H?Ýbbs.3c3t.comå%ÍÌ

690YT!]±H?Ýbbs.3c3t.comå%ÍÌ

210YT!]±H?Ýbbs.3c3t.comå%ÍÌ

415YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1045YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

585YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

685YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

450YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

630YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

425YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

605YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

305YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

365YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

230YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

330YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

215YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40二YT!]±H?Ýbbs.3c3t.comå%ÍÌ

255YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

160YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

95YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

145YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

40三YT!]±H?Ýbbs.3c3t.comå%ÍÌ

255YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

160YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

95YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

145YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30三YT!]±H?Ýbbs.3c3t.comå%ÍÌ

140YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

115YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

55YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

55YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20四YT!]±H?Ýbbs.3c3t.comå%ÍÌ

45YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

35YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5、隧道断面加宽
隧道平曲线半径小于最小视距半径R3时，应采取措施加大隧道横净距。若线形改善困难时，应加大隧道断面尺寸或调整断面布设。若按《规范》设置了超高值不大于4%的平曲线，右转弯隧道横净距均满足视距要求，左转弯隧道应加大左侧横净距，加宽参考值见表8所示。表中0.55和1.65分别为80和100公里/小时的最大加宽值。

表8
曲线隧道横净距加宽参考表 （单位：米）

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.25YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.5YT!]±H?Ýbbs.3c3t.comå%ÍÌ

0.75（0.55）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.00YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.25YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.5YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1.75（1.65）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2615YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2400YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2225YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2070YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1935YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1820YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1715YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1620YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1545YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1410YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1300YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1200YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1045YT!]±H?Ýbbs.3c3t.comå%ÍÌ

980YT!]±H?Ýbbs.3c3t.comå%ÍÌ

950YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

750YT!]±H?Ýbbs.3c3t.comå%ÍÌ

680YT!]±H?Ýbbs.3c3t.comå%ÍÌ

625YT!]±H?Ýbbs.3c3t.comå%ÍÌ

620YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

350YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

--YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6、纵坡路段视距平曲线半径
前面计算的平曲线视距半径，应为路线纵坡小于2%的视距平曲线半径。当行驶方向为上坡时，有助于车辆制动，当行驶方向为下坡时，加大了制动距离。《标准》修正了3％、4％、5％、6％的下坡路段货车停车视距，《指南》修正了2％、4％、6％的上、下坡货车停车视距。暂且只讨论高速公路和一级公路，且线性增加不同坡度修正值，不考虑路线上坡影响。下坡路段货车停车视距修正值见表9所示。依据《标准》和《指南》修正视距计算出的视距半径见表10和表11所示。
表 9

YT!]±H?Ýbbs.3c3t.comå%ÍÌ
纵坡路段货车停车视距修正值（单位：米）

设计速度YT!]±H?Ýbbs.3c3t.comå%ÍÌ

平坡路段YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6％YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

标准YT!]±H?Ýbbs.3c3t.comå%ÍÌ

指南YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

245YT!]±H?Ýbbs.3c3t.comå%ÍÌ

417YT!]±H?Ýbbs.3c3t.comå%ÍÌ

12YT!]±H?Ýbbs.3c3t.comå%ÍÌ

66YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

28YT!]±H?Ýbbs.3c3t.comå%ÍÌ

101YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

100YT!]±H?Ýbbs.3c3t.comå%ÍÌ

180YT!]±H?Ýbbs.3c3t.comå%ÍÌ

301YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5YT!]±H?Ýbbs.3c3t.comå%ÍÌ

46YT!]±H?Ýbbs.3c3t.comå%ÍÌ

10YT!]±H?Ýbbs.3c3t.comå%ÍÌ

59YT!]±H?Ýbbs.3c3t.comå%ÍÌ

15YT!]±H?Ýbbs.3c3t.comå%ÍÌ

71YT!]±H?Ýbbs.3c3t.comå%ÍÌ

20YT!]±H?Ýbbs.3c3t.comå%ÍÌ

112YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

YT!]±H?Ýbbs.3c3t.comå%ÍÌ

80YT!]±H?Ýbbs.3c3t.comå%ÍÌ

125YT!]±H?Ýbbs.3c3t.comå%ÍÌ

202YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

30YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5YT!]±H?Ýbbs.3c3t.comå%ÍÌ

39YT!]±H?Ýbbs.3c3t.comå%ÍÌ

7YT!]±H?Ýbbs.3c3t.comå%ÍÌ

46YT!]±H?Ýbbs.3c3t.comå%ÍÌ

11YT!]±H?Ýbbs.3c3t.comå%ÍÌ

64YT!]±H?Ýbbs.3c3t.comå%ÍÌ

14YT!]±H?Ýbbs.3c3t.comå%ÍÌ

81YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60YT!]±H?Ýbbs.3c3t.comå%ÍÌ

85YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

17YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4YT!]±H?Ýbbs.3c3t.comå%ÍÌ

22YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6YT!]±H?Ýbbs.3c3t.comå%ÍÌ

26YT!]±H?Ýbbs.3c3t.comå%ÍÌ

8YT!]±H?Ýbbs.3c3t.comå%ÍÌ

36YT!]±H?Ýbbs.3c3t.comå%ÍÌ

10YT!]±H?Ýbbs.3c3t.comå%ÍÌ

45YT!]±H?Ýbbs.3c3t.comå%ÍÌ

表10
《标准》纵坡修正后的视距半径表

设计速度（km/h）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

R1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4403 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2131 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4682 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2265 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4969 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2404 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

　

　

　

　

100 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2633 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1180 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2777 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1245 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2925 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1311 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3077 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1379 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

　

　

80 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1260 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

607 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1300 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

626 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1340 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

645 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1423 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

685 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1486 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

716 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

582 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

280 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

609 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

293 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

637 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

307 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

665 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

320 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

694 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

334 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

R2YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3145 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1785 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3344 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1898 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3549 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2014 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

　

　

　

　

100 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1801 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

978 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1900 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1031 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2001 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1086 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2105 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1143 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

　

　

80 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

862 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

496 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

889 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

512 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

917 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

528 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

973 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

560 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1017 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

585 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

398 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

229 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

417 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

240 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

436 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

251 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

455 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

262 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

475 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

273 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

R3YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2872 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1694 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3053 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1801 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3240 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1911 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

　

　

　

　

100 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1630 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

925 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1719 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

976 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1811 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1028 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1905 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

1081 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

　

　

80 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

780 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

468 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

805 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

483 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

830 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

498 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

881 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

528 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

920 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

552 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

60 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

360 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

216 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

377 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

226 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

394 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

237 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

412 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

247 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

430 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

258 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

表11
《指南》纵坡修正后的视距半径表

设计速度（km/h）YT!]±H?Ýbbs.3c3t.comå%ÍÌ

2%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

3%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

4%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

5%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

6%YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

左偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

右偏YT!]±H?Ýbbs.3c3t.comå%ÍÌ

R1YT!]±H?Ýbbs.3c3t.comå%ÍÌ

120 YT!]±H?Ýbbs.3c3t.comå%ÍÌ

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7、竖曲线视距半径
视距为竖曲线上的一段圆弧，视点（眼睛）与障碍物顶部的直线距离，可简称为视线距离，因竖曲线半径一般很大，往往是平曲线的很多倍，可以认为视距与视线距离相等。凸型竖曲线可能成为视线障碍，凹型竖曲线可能成为车灯的障碍，设置照明的隧道可不考虑凹型竖曲线的影响。
设眼睛视点高度为a，障碍物高度为b，经求证竖曲线的视距半径计算公式为6-1。《规范》货车竖曲线视距半径小于小客车半径，小客车视距半径多数大于路线极限最小竖曲线半径，小于路线一般最小半径；但《指南》小客车视距半径小于货车视距半径，货车视距半径大于路线一般最小半径。

R竖=(S / (a0.5+b0.5))2/ 2----------------6-1
为了便于运用，对于标准车型小客车、货车可分别简化为6-2和6-3近视计算公式：

R小=S2 / 4---------------6-2

R货=S2 / 6---------------6-3
8、结语
综上所述，隧道横净距越小，要求最小平曲线半径越大；单向双车道隧道，左车道横净距小于右车道横净距；依据车辆行驶方向，左转弯隧道的横净距小于右转弯隧道；无论左转或是右转，视距曲线半径均由货车控制。现行规范规定隧道左侧路缘带宽度小于右侧路缘带宽度，适应了驾驶行为，但不利于保证曲线隧道路段的视距要求，应给与关注。隧道曲线半径应尽可能大于R2。当隧道曲线半径大于安全视距半径R1时，可不考虑其它因素对视距的影响；当曲线半径小于安全视距半径R1时，应检查纵坡对视距的影响，并控制检修道高度；当小于R2时，应同时检查隧道内部设施对视距的影响；当小于R3时，应优先考虑加大平曲线半径，或加宽隧道左侧横净距。《指南》加大了视距要求，依据隧道路段驾驶习惯，山区高速公路的中、短隧道可不考虑《指南》提高要求，特长、长隧道曲线半径，宜采用《指南》对应的视距曲线半径。
限于水平，平面线形、平纵组合等因素未讨论，且文中难免有不妥之处，敬请批评指正。
参考文献
[1]中华人民共和国交通部.公路工程技术标准（JTGB01—2003）.北京.人民交通出版社.2004.
[2]中华人民共和国交通部.公路隧道设计规范（JTGD70—2004）.北京.人民交通出版社.2004.
[3]中华人民共和国交通部.公路项目安全性评价指南（JTG/TB05—2004）.北京.人民交通出版社.2005.
[4]中华人民共和国交通部.公路路线设计规范（JTG D20—2006）.北京.人民交通出版社.2007.
[5]中华人民共和国交通部.公路路线设计规范（JTJ 011—94）.北京.人民交通出版社.1995.
作者简介：
1、
韩熠：工作单位：陕西交通技术咨询有限公司，同济大学道路工程专业，本科，高级工程师，总经理。联系方式：西安市含光北路110号，陕西交通技术咨询有限公司，电话：(029)88423020。
2、
王跟民：陕西省林业勘察设计院公路分院，工程师。

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