公路等级

随着汽车保有量的增长和公路等级的不断提高，汽车碰撞事故越来越多，其中追尾相撞是发生频率较高的事故。

With the growth in car ownership and continual improvement on highway classification , the number of collision accidents increased , which include a high frequency of rear-end collision .

然而乌江流域公路等级低、路况差，决定了乌江水运在流域内交通的主体地位。

However the Wu River basin highway classification is low , the state of roads was bad , has decided the water transportation to be main status in the Wu river basin .

指标体系由公路等级指标、公路城镇化效应指标以及公路水利效应指标构成。

The index system consists of classification of highway , urbanism action of highways and water conservancy action of highways .

随着公路等级和汽车行驶速度的不断提高，对公路线形的设计提出了更高的要求，对公路使用的舒适性要求也越来越引起人们的重视。

With the raise of highway class and automobile travel speed , high demands are put forward to highway design .

在选用公路等级、设计速度和限制速度时，以公路功能定位；

When deciding the rank of highway , designed speed , and speed limit , they must comply with the highway function .

在分析的基础上，本文还考虑了地方筑路材料选型影响因素，一是包括公路等级、建设性质、地理特征、料场分布、结构物类型等的影响；

All of the road standards , construction features , geographic characteristics , material distribution and structure categories will produce some impacts ;

在经济上，随着公路等级的提高，桥梁的造价占公路总造价的比例越来越高。

The average cost of highway-bridge occupies a larger and larger proportion of the total costs economically with the improvement of the highway grades .

随着公路等级的不断提高，车辆的行驶速度也在加快，这对高等级公路路面的要求也就越来越高，因此，沥青路面表面的抗滑性能显得很重要。

With the development of the grade of highway , the vehicles ' running speed have been increasing , and the standard of high grade highway has become higher .

随着交通基础设施工程建设的飞速发展和公路等级的不断提高，大型互通桥梁、高架桥梁日益增多，支座被广泛地使用于桥梁中。

With the rapid development of traffic base devices and continuous improvement of highway grade , such as large interchange bridge and viaducts are widely used in bridge construction .

沥青路面的平整度是评定路面质量和使用性能的主要指标之一，公路等级越高，对路面平整度的要求也越高。

Asphalt Pavement smoothness of the road to assess the quality and performance of one of the main indicators , the higher the grade highways , Pavement on the higher requirements .

随着汽车的大规模生产、使用和公路等级的不断提高，特别是高速公路的飞速发展，汽车的行驶速度逐渐加快，汽车安全问题越来越受到人们的重视。

With the mass production of vehicles and the construction of the highway , the vehicle runs increasing fast . So , more people pay more attention to vehicle safety today .

2009年国家投入大量资金到交通基础设施建设，这将大范围的提高我国的公路等级，有效促进部分城市的路网布局优化。

Our country invests tens of billions to the traffic infrastructure construction in 2009 , which broad improves the highway grade of our country and promotes some cities ' road network optimization .

随着公路等级的提高和路面质量的改善，以及交通量的增长和行车速度的提高，沥青路面使用技术状况的平整度特性越来越引起了人们的重视。

With the improvement of highway grade and pavement quality , and the increasing of traffic and improvement of traveling speed , the smoothness of bitumen pavement is paid more and more attention .

分析表明半刚性基层沥青路面轴载换算指数主要与路面结构强度、公路等级和轴重有关，轮压的影响并不明显；

It is pointed out that the main influential factors to axle exchange index are pavement structural strength , highway class and axle load ; the influence of tyre pressure is not obvious ;

随着公路等级的提高，山岭重丘区出现大面积、高边坡、长路堑路段，给边坡施工带来新的难题和考验。

With the advancement of the highway grade , there are large-area , high side-slope and long cutting section highway in the heavy mountain-mound area . This brings a serious problem in the course of construction for us .

随着高原地区公路等级及线型标准的提高，如何提高路面抗滑性、舒适性，降低隧道路面噪声，提高隧道路面能见度等是急待解决的问题。

With the elevation of road grade and linear standard in plateau area , there are a lot of pressuring problems including how to increase skid-resistance , comfortability , tunnel visibility and reduce pavement noise and so on .

随着公路等级不断提高、高等级公路大量修建，加强项目监理费用控制，合理计算中心试验室建设费用成为当前急需解决的问题。

With the level of highway constantly improving and a large number of high-grade highways constructing , to strengthen the Project Supervision Cost control and to compute construction costs of the Central Laboratory reasonably have become the urgent problems .

但是，现有农村公路等级水平低、路网通达深度不够、行车条件差、断头路多、交通不畅，越来越不适应农村社会经济的发展需求。

However , there is rural poor class of highway now , poor road network depth , bad driving terms , more breaking end way , traffic jam and so on , which more and more can 't meet rural social development demanding of economy .

干线公路网等级结构优化的目标规划模型及算法

Goal Programming Model and Algorithm for Arterial Highway Network Grade Structure Optimization

公路提高等级拓宽路基出现的问题及防治措施

Problems caused by roadbed widening in highway upgrading and its prevention measures

公路网等级结构多目标优化模型

Multi-Objective Optimized Model of Grade Structure of Road Network

区域公路网等级结构优化方法研究

On Regional Highway Network Structure Optimization Theory

阐述了当公路提高等级时、原路基加宽后，新旧路基产生差异沉降给公路带来的破坏情况。

In this highway upgrading when the old roadbed was widened the differential settlement between the new and old roadbed made damage for the pavement .

一条公路的等级可以从其所处位置、土地利用、道路功能、路网结构、流量情况等方面进行考虑。

To class a highway , some aspects such as location , land utilization , road function , road network structure , traffic volume and etc.

为了配置合理的公路网等级结构，需要达到多个预期目标的要求，采用多目标规划法来解决公路网等级结构的优化问题。

The requirement of many desired objectives must be achieved for disposing the reasonable grade structures of highway network . This paper solves the optimization problems of the grade structures of highway network with program of multiple objectives .

针对区域公路网等级结构的优化过程，分析了确定公路网合理规模的国土系数法、类比法、公路网生长曲线模型拟合、公路网等级结构优化的多目标规划法。

The paper expound the optimization procedure of regional highway network structure , and applied territory coefficient method and analogy method to calculate its reasonable development scope and applied growth curve model to fit its development course and applied multi-objective programming to optimize its grade structure .

最后，基于事故黑点的安全评价指标，提出了累计频率法为理论基础的道路事故黑点鉴别方法，对张家界武陵源景区公路安全等级分级中的不良路段进行事故黑点鉴别。

Finally , based on accident black spots in the safety evaluation index , proposed method is based on the cumulative frequency of road accident black spot identification methods , Zhangjiajie scenic spot of Zhangjiajie highway safety classification of the poor level of road accident black spots for identification .

专家系统在公路桥梁损伤等级评价中的应用研究

Applications of Expert System in Damage Degree Evaluation for Road Bridge

公路水毁毁损等级划分体系研究

System Research on How to Rank Road Flood Damage

多目标规划法确定公路网的等级结构

Determining Grade Structures of Network of Highway with Program Method of Multiple Objectives