【作者】 黄建镇；

【导师】 丁艺；

【作者基本信息】 福建农林大学 ， 森林工程， 2004， 硕士

【摘要】 随着汽车使用量增加，交通事故已成为当今世界的一个严重社会问题，它不仅造成人员伤亡，同时也造成了巨大的财产损失，我国的交通事故形势更为严峻。所有道路交通事故都是由于人、车、路(环境)三因素组成的系统相互协调作用受到破坏的结果，山区高等级公路的交通事故与道路因素关系更为紧密。 山区高等级公路由于地形、地质和气候条件因素的制约，设计标准较低，弯道半径、纵坡坡度、路面情况、道路线形综合协调等很难满足车辆的快速、安全、舒适运行。因此，需要使用交通标志尤其是线形诱导标志为山区高等级公路上行驶的驾驶人指示前方线形变化，促使其提早采取各种措施，确保行车安全。 本论文运用公路测量学上的切线支距法对线形诱导标在含各种曲线段的山区高等级公路的设置进行了研究。论文首先对圆曲线路段的线形诱导标设置进行了推导：以道路中线的曲线中点为分隔点，将曲线分成两部分，并分别用方程作为表达式。由于线形诱导标是设置在弯道外侧一定距离的边缘，它的方程可由道路中线的方程外移得到，并将各方程统一到同一原点，驾驶人视线正前方和视角也采用方程表达，联立各方程，得出的解即为线形诱导标的位置，同时需对方程的解进行讨论。含缓和曲线的路段线形诱导标设置思路与圆曲线路段相同，只是应将缓和曲线单独用方程表达。论文最后将本文的研究方法运用到实践中，特别对含缓和曲线路段如何设置线形诱导标详细进行说明。更多还原

【Abstract】 Traffic accident has been a serious social problem, with the increasing use of vehicles. It not only makes great casualties, but also causes enormous economic losses. The happening of every traffic accident is due to the destruction of the coordinated function system composed by men, vehicles and road. The relationship between the traffic accident and the road feature is even tighter in high grade road in mountain areas.Due to limited factors such as terrain , geological condition .climate ,the lower designed standard, the radius of curve lane, the gradient of vertical slope as well as the condition of the road surface ,it’s hard for the driver to drive fast, safely and comfortably in the high grade road in mountain area. In order to inform the drivers in advance to take measures to adopt to the change of the lineless, it is important to set traffic sign, especially the chevron alignment sign in the high grade road in mountain areas.Applying the method of tangential protrusion in distance of road metrical science, this paper has studied the distribution of chevron alignment sigh in each kind of curve line. This paper makes a deduction on the distribution of circle curve line: we have the curve central point of the central road line as the separating point, which cut the curve line into two parts, and each part was expressed by an equation respectively. As there is some distance between the central curve line and two side-line of the road, we must move these two central curve equation outside parallely. The starting point of each equation should be the same. The line of sight and visual angle of driver can also be expressed by equations. By combining these four equations, we get the key of these equations, and that is the distribution place of chevron alignment sigh. Then we have a discussion on the key according to different conditions. This distribution method can also be used in the road comprising adjustment curve line. In the end, the author put this theory into the practice and made an intensive description on how to set the chevron alignment sign on the roads which include adjustment curve line.更多还原