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发表于 2009-06-27 09:29 |显示全部

·ÏåJê7¯:bbs.3c3t.comÍqa K2
韩熠1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2
王跟民2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

（ 1.陕西交通技术咨询有限公司，陕西西安 710068； ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.陕西省林业勘察设计院，陕西西安 710082；） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

［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1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2
·ÏåJê7¯:bbs.3c3t.comÍqa K2
高速、一级公路隧道建筑限界横断面组成一览表（单位：米） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

序号 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

设计速度（km/h） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

车道宽度W ·ÏåJê7¯:bbs.3c3t.comÍqa K2

侧向宽度L ·ÏåJê7¯:bbs.3c3t.comÍqa K2

最小检修道J ·ÏåJê7¯:bbs.3c3t.comÍqa K2

建筑限界净空 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧LL ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧LR ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

净宽 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

净高 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.75×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

11.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.75×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.75×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.75×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

表2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2
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） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

序号 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

设计速度（km/h） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

车道宽度W ·ÏåJê7¯:bbs.3c3t.comÍqa K2

侧向宽度L ·ÏåJê7¯:bbs.3c3t.comÍqa K2

最小人行道J ·ÏåJê7¯:bbs.3c3t.comÍqa K2

建筑限界净空 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧LL ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧LR ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

净宽 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

净高 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80二级 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.75×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60二级 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.50×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40二级 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.50×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40三级 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.50×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

30三级 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.25×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20四级 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.00×2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

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3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2
·ÏåJê7¯:bbs.3c3t.comÍqa K2
·ÏåJê7¯:bbs.3c3t.comÍqa K2
·ÏåJê7¯:bbs.3c3t.comÍqa K2
高速、一级公路停车视距及货车停车视距（单位：米） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

序号 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

设计速度 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

《标准》修正停车货车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

210 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

280 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

245 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

417 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

265 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

273 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

160 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

205 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

180 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

301 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

190 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

195 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

200 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

110 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

140 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

202 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

130 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

132 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

136 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

139 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

4 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

90 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

89 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

91 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

93 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

95 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

表4

二、三、四级公路停车视距及货车停车视距（单位：米）

序号 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

设计速度 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

停车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

《标准》下坡修正停车货车视距 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

110 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

140 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

202 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

130 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

132 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

136 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

139 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

75 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

90 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

89 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

91 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

93 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

95 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

50 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

4 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

30 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

35 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

35 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

5 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

《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 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

m1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

m2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

m3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.225 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.525 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.275 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.225 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.525 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.275 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.725 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.275 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.725 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.775 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.725 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.775 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.225 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.225 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.025 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.475 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.275 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.850 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.650 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.000 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.850 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.650 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.000 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.900 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.600 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.400 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.350 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.000 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.150 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.600 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.400 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40三 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.600 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.400 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.350 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.000 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.150 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.600 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.400 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

30三 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.475 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.275 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.725 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.375 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.525 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.875 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.775 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20四 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.600 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.400 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.850 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.650 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.000 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2.900 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3.250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

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。

·ÏåJê7¯:bbs.3c3t.comÍqa K2

表6 ·ÏåJê7¯:bbs.3c3t.comÍqa K2
·ÏåJê7¯:bbs.3c3t.comÍqa K2
公路隧道视距平曲线半径计算值（单位：米） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

设计速度 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

安全视距半径R1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

一般视距半径R2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

最小视距半径R3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右侧车道 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

小车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

货车 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2478 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4002 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1564 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1936 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1853 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2858 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1289 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1622 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1709 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2610 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1218 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1539 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1620 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2492 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

977 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1117 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1174 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1705 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

795 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

926 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1076 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1543 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

749 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

876 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

766 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1202 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

579 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

555 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

822 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

401 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

473 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

508 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

744 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

376 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

446 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

356 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

556 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

232 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

268 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

258 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

380 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

186 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

219 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

236 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

344 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

175 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

206 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

680 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1042 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

500 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

579 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

469 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

679 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

376 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

446 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

435 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

354 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

422 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

380 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

602 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

265 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

301 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

247 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

361 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

193 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

226 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

227 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

328 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

180 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

213 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

83 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

114 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

156 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

63 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

89 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

77 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

139 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

59 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

83 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40三 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

250 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

83 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

114 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

156 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

63 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

89 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

77 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

139 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

59 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

83 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

30三 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

76 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

136 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

49 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

58 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

65 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

111 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

45 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

53 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

57 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

94 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

41 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

49 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20四 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

31 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

40 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

21 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

18 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

27 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

33 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

19 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

17 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

24 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

29 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

17 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

15 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

表7

公路隧道视距平曲线半径建议值（单位：m）

设计速度 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

安全视距半径R1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

一般视距半径R2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

最小视距半径R3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏曲线 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏曲线 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏曲线 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏曲线 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏曲线 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏曲线 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4005 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

11600 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1940 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5610 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2860 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8285 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4705 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2615 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7565 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1545 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4460 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2495 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6975 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1710 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4770 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

930 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2590 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1545 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4315 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

880 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2450 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1205 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3145 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

585 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1515 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

825 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2150 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

475 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1240 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1945 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

450 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1170 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

560 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1110 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

270 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

535 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

385 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

760 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

225 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

440 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

350 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

690 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

210 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

415 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1045 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

585 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

685 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

450 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

630 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

425 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

60二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

605 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

305 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

365 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

230 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

330 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

215 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

40二 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

255 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

160 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

95 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

145 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

40三 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

255 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

160 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

95 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

145 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

30三 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

140 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

115 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

55 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

55 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

20四 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

45 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

35 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

35 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

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 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.5 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

0.75（0.55） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.00 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.25 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.5 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1.75（1.65） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2615 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2400 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2225 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2070 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1935 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1820 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1715 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1620 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1545 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1410 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1300 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1200 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1045 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

980 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

950 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

750 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

680 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

625 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

620 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

350 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

-- ·ÏåJê7¯:bbs.3c3t.comÍqa K2

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

·ÏåJê7¯:bbs.3c3t.comÍqa K2
纵坡路段货车停车视距修正值（单位：米）

设计速度 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

平坡路段 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6％ ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

标准 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

指南 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

245 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

417 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

12 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

66 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

28 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

101 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

180 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

301 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

46 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

59 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

15 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

71 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

20 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

112 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

125 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

202 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

30 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

39 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

46 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

11 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

64 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

14 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

81 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

85 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

17 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

22 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

26 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

36 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

45 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

表10
《标准》纵坡修正后的视距半径表

设计速度（km/h） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

R1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4403 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2131 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4682 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2265 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4969 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2404 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2633 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1180 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2777 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1245 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2925 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1311 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3077 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1379 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1260 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

607 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1300 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

626 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1340 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

645 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1423 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

685 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1486 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

716 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

582 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

280 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

609 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

293 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

637 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

307 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

665 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

320 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

694 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

334 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

R2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3145 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1785 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3344 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1898 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3549 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2014 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1801 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

978 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1900 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1031 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2001 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1086 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2105 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1143 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

862 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

496 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

889 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

512 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

917 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

528 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

973 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

560 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1017 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

585 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

398 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

229 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

417 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

240 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

436 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

251 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

455 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

262 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

475 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

273 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

R3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2872 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1694 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3053 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1801 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3240 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1911 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1630 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

925 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1719 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

976 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1811 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1028 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1905 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1081 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

780 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

468 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

805 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

483 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

830 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

498 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

881 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

528 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

920 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

552 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

360 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

216 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

377 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

226 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

394 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

237 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

412 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

247 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

430 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

258 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

表11
《指南》纵坡修正后的视距半径表

设计速度（km/h） ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6% ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

左偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

右偏 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

R1 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

15553 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7525 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

16800 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8129 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

17888 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8656 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

　 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9262 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4152 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

9969 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4469 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10645 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4772 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

13121 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5882 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

　 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4140 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1993 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4468 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2151 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4731 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2278 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5443 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2621 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6161 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2966 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1444 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

695 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1551 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

747 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1640 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

789 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1872 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

901 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2094 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1008 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

R2 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

11109 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6305 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

12000 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6811 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

12777 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7252 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

　 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6337 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3440 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6821 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3703 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

7283 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3954 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8977 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4873 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

　 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2833 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1631 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3057 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1760 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3237 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1864 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3724 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2144 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4215 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2427 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

988 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

569 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1061 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

611 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1122 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

646 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1281 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

737 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1433 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

825 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

R3 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

120 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10143 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5982 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

10957 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6462 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

11666 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6880 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

　 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

100 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

5734 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3254 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6171 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3503 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

6590 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3740 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

8122 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

4610 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

　 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

80 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2563 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1538 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2766 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1659 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2929 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1757 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3369 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2022 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

3814 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

2288 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

60 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

894 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

536 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

960 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

576 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1015 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

609 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1159 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

695 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

1296 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

778 ·ÏåJê7¯:bbs.3c3t.comÍqa K2

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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