1) classification and structure of road network
路网等级结构
1.
Based on the definition of extensive capacity of urban transport, the models of road infrastructure supply demand, restricted possessing number of automobile, degree of time space saturation, vehicle volume bearing and classification and structure of road network are established and all the results have been applied in many specific projects, such as Nanjing urban transport planning.
根据城市交通广义容量概念，建立城市道路设施资源供需、机动车规划年限制保有量、路网时空饱和度、路网机动车交通流承担及路网等级结构模型，并将所得结果运用于南京城市交通规划等多项具体工程。
2) road category scale
道路等级结构
1.
Basic contents of road network planning are expounded from three aspects of road category scale, road network density and road network shape.
讲述了道路网规划的基本思想是疏解,并从道路等级结构、道路网密度和道路网的结构形式三个方面阐述了道路网规划应重视的基本内容。
3) grade structure of highway
公路等级结构
4) structure optimization of classified highway
等级路结构优化
6) Grade structure
等级结构
1.
The determination of the rational highway grade structure is one part of highway network planning,it also is an important content of highway network layout optimization.
公路网合理等级结构的确定,是公路网规划的组成内容之一,也是公路网布局优化的重要组成内容之一。
2.
Based on the function of the countytownship highway network and its characteristics, The construction projects division of the countytownship highway network and grade structure optimizing disposition are studied.
从县乡公路网功能特点出发，提出了县乡公路网的合理发展规模和一种简单、实用、操作性强的县乡公路网网络布局优化方法，并对县乡公路网建设项目划分和等级结构优化配置进行了研
3.
According to the demands of making the medium- and long-term highway network planning, this paper establishes a goal programming model for arterial highway network grade structure optimization, and offers an algorithm with example.
依据制定中长期公路网规划的需要,建立了一个干线公路网等级结构优化的 目标规划模型,并给出了算法及算例。
补充资料：建筑结构等级划分
建筑结构等级划分
【建筑结构等级划分】对建筑物结构作质量上的等级划分，有助于确定建筑险保险费率。 一等建筑: (l)房架用钢骨水泥、砖石或钢结构; (2)内外墙、地坪、楼坪、扶梯用钢骨水泥、砖石或钢结构; (3)房顶用水泥、瓦片、砖石、铁皮、石棉、沥青或油毛毡。 二等建筑: (l)房架、地坪、楼坪、扶梯用木结构; (2)内外墙主要用砖石、水泥或其它不易燃烧的材料; (3)房顶用砖瓦、铁皮、石棉、沥青或铺石屑的油毛毡。 三等建筑: 凡次于前两等级的建筑物均属三等建筑。
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条