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公路空间视距计算方法与检测技术
引用本文:王佐 刘建蓓 郭腾峰. 公路空间视距计算方法与检测技术[J]. 西安公路交通大学学报, 2007, 27(6): 44-47,62
作者姓名:王佐 刘建蓓 郭腾峰
作者单位:中交第一公路勘察设计研究院,陕西西安710075
摘    要:为了精确计算公路在三维空间中的实际视距,提出了空间视距的概念,通过延伸应用空间两点通视原理,建立了空间视距计算和分析的数学模型。基于计算机仿真技术开发出对空间视距的实时检测技术,通过将设计视距、运行视距和空间视距3种视距对比分析,给出了发现视距不足的方法。与早前的视距计算方法和研究相比,该方法对正常路面、行车道空间视距计算准确,能够计算和分析公路路侧附属设施对视距的影响,为公路几何设计和安全评价提供了依据。

关 键 词:道路工程 公路几何设计 行车视距 空间视距 安全评价
文章编号:1671-8879(2007)06-0044-04
收稿时间:2006-12-15

Calculating method and appraising technique of highway 3D-view sight distance
WANG Zuo, LIU Jian-pei, GUO Teng-feng. Calculating method and appraising technique of highway 3D-view sight distance[J]. Journal of Xi'an Highway University, 2007, 27(6): 44-47,62
Authors:WANG Zuo   LIU Jian-pei   GUO Teng-feng
Abstract:In order to accurately calculate the actual sight distance in three-dimensional space, this paper puts forward the concept of 3D-view sight distance, sets up a mathematical model for calculation and analysis of 3D-view sight distance by applying and extending the intervisible principle between two dots. Based on computer virtual simulation technology, it develops real time checking technique for 3D-view sight distance, and puts forward a method of finding short of sight distance by contrasting three kinds of sight distance., design-vehicle sight distance, driving sight distance and 3D-view sight distance. Compared with former calculating methods and researches of sight distance, this method not only gives a way for accurately calculating 3D-view sight distance on normal pavement and carriageway, but also achieves the impact of roadside facilities on sight distance, provides a basis for highway geometric design and traffic safety evaluation. 5 figs, 10 refs.
Keywords:road engineering   highway geometric design   driving sight distance   3D-view sightdistance   safety appraisal.
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