Because of the difficulty in estimating the settlement of soft ground , how to estimate the settlement of soft ground well and truly , especially to estimate the relation between settlement and time is becoming an important problem of highway design 由于路堤软土地基沉降预估的复杂性，准确地预估路堤软基的沉降量，特别是预估软基沉降与时间的关系便成为公路设计的重要问题。
As a result tire pressure as well as axle load has to be strictly limited in accordance with design specification and heavy fines need to be charged with the truck companies to compensate the extra pavement costs of highway agencies 本论文建议对超载车辆实行严格的管理条例以维护交通部门对路面的投资效益，同时建议对路基路面整体设计理论进行进一步研究以满足山区公路设计的需要。
According to the requirement of design enterprise , the farther analysis of hdmis is carried out with object - oriented method . by the analyses of use case , its scope of function is defined , and its computer model is set up 本文在分析研究公路设计企业管理模式的基础上，应用面向对象的分析方法对hdmis进行了系统的需求分析，通过用例分析划定其功能范围，确定了该系统的计算机信息模型；同时，采用面向对象的设计方法对系统进行了具体的设计。
To assaying the effecting of shan " xi highway building on road - area circumstances and soil lapse , in the paper which embarks from condition of nature resource , factor of human literature , effect of field , feature of constitute of traffic vehicle and outcome of experiment researching in freeway of xi " hu and so on . on this base it also expounds policy strategy of ecology environment in shan " xi road building . by investigating the compatibility of traffic in shan " xi , it expounds perspective traffic of device fit for shan " xi " s all kinds of corresponding road . based on assaying existing criterion of route , propriety adjusting criterion of route of shan " xi , then expounding highway building criterion fitting for shan " xi region so as to improving highway device of shan " xi region . ameliorating road environment and saving works fund 在此基础上提出陕西公路建设生态环境保护的政策策略；研究了陕西公路交通量适应性，提出适合陕西地区的各级公路相应的远景设计交通量；在分析陕西公路现有线形标准基础上，对陕西地区公路建设的线形标准适当调整，提出适合陕西地区的公路建设标准，以优化陕西地区的公路设计，改善公路环保和生态环境，节约工程资金；研究并提出陕西高等级公路路线综合评价方法和评价方案；通过对西户线高速公路路基试验研究，提出适合陕西关中地区路基回弹摸量值以及路面结构设计参数，以供路面设计时参考查用。
It is one foundational work of large - scale construction and enormous investment . the departments of the highway design must be required to make decision according to the indexes , such as rational highway capacity , level of service and road alignments , etc . if not , the huge wasting and back - end ecocatastrophe will be brought 这是一项建设规模宏大、投资规模巨大的基础工程,要求各级部门在公路设计时,必须依据合理的公路通行能力、服务水平、道路线形等指标来确定,防止工程投资的巨额浪费和后期的生态灾难。
The function design of system includes writing down amendment and pretreatment about spatial database and attribute database . this system provides common and basic functions of gis . besides , we can make out the topographical maps , planimetric maps and skiagraph , structure objects of highway construction of design and can inquire two - way between spatial information and attribute information 系统功能设计包括空间数据库和属性数据库的录入、修改以及预处理；系统还提供了一般gis系统应具备的基本功能，并在此基础上进行涵盖公路设计施工的地形图、平纵缩图、构造物等图形信息与属性信息的双向查询，并运用挣值法等对相关属性进行分类统计以供有关公路工程项目的各方使用。
In general , a firm begins collecting all kind of materials about economy development and environment after accepting a assignment , and then studying a feasible path based on one of these materials individually . these suitable paths will be compared and outline a final solution 一般情况下，公路设计单位在接受设计委托后，要开始收集项目影响区经济、交通发展资料和地质水文普查资料、各种比例的地形图等资料，然后在此基础上，对单个条件进行研究，再就可能的方案总体对比，才编制出该工程的线路规划方案。
By analyzing applied characters of simulation in highway design and studying the requirements of structure , function and data , cooperation frameworks based on data file and component - software bus are established which is important to develop a cooperation system . a time - changing characteristic model of driver , vehicle , highway and environment is established which is the basic work to express the simulation state and to organize the simulate flow 分析了人车路与环境仿真技术在公路设计中的应用特点，研究了仿真系统与cad系统之间对结构、功能、数据的相互需求，提出了基于数据文件和基于构件?软总线的人车路与环境仿真与设计协同框架，以适应公路cad系统的发展现状，对人车路与环境仿真与设计的协同实现具有指导意义。
As a foundational work of highway design , the estimate and analysis of highway traffic capability , can not only define proper scale and construction mode of highway , but also provide scientific and theoretic support for layout of road net , feasibility analysis of road engineering , highway design and post estimate of highway construction , which is meaning of this subject study 公路通行能力预测分析与交通量预测分析，作为公路建设的一项基础性工作，不仅可以确定公路建设的合理规模及合理建设模式，还可为公路网规划、公路工程可行性研究、公路设计、公路建设后评估等方面提供更为科学的理论依据。
According to the construction of chuan - zhang southern road in ganzi state and the architectural technology of the bituminous pavement in the altiplano of aba state , this essay will discuss the sub - grade distress and architectural technology in the cold altiplan areas , including : characteristics of road engineering in cold altiplano areas attention of preventing measures of general sub - grade distress and road design according to the analysis of general distress of sub - grade and pavement attentions of structural design of bituminous pavement according to the analysis of pavement structure in cold altiplano areas discussing the field construction technology of sub - grade and pavement 本文结合甘孜州川藏南线油路工程建设情况及阿坝州草原地区沥青路面修筑技术的研究情况，对高寒地区路基病害及沥青路面修筑技术进行了探讨，并主要突出了如下几个方面：高寒地区公路工程的特点通过常见路基路面病害成因分析，提出了常见路基病害的防治措施及公路设计中的注意事项通过高寒地区路面结构设计的分析，提出了沥青路面结构设计中的注意事项探讨了路基、路面的现场施工技术
