According to operating characteristics of car on road and the demand of alignment design, the method of highway alignment design based on design velocity were researched.
根据汽车在公路上行驶的特性和公路线形设计的要求,研究了以设计速度作为依据的公路线形设计方法,发现各技术指标取值不合理、相互组合不协调,易发生交通事故等问题。
The existed shortage of highway alignment design based on design speed was analyzed.
针对目前以设计速度为依据的公路线形设计方法存在的局限性,将运行速度与设计速度同时加以考虑,在此基础上,根据在公路上汽车的行驶特性和公路线形设计的要求,提出基于运行速度的公路路线设计方法及设计流程,为公路几何设计指标选取和运行速度设计方法的应用提供参考。
This paper analyzes the main factors related to the maximum design speed of urban railways and studies the advantages and disadvantages of increasing maximum design speed.
简要分析了影响城市铁路最高设计速度的主要因素,研究了提高最高设计速度的利弊。
The paper analyzed the problem based on design speed,introduced route design method by operating speed concept etc.
分析了基于设计速度的路线设计方法存在的问题,介绍了运用运行速度概念进行路线设计的方法,结合太长、长邯等高速公路介绍了运用运行速度进行路线线形安全性检验及评价的方法。