论文部分内容阅读
针对中国行车视距测算的现状和存在的问题,基于数字仿真模型技术,提出以“视线棱体”为核心的新的空间视距测算模型,分析并建立“视线棱体”与公路模型相关面的视线通视判断标准,并以此原理研发了相应的应用软件技术,有效地提高了行车视距的计算精度;由于该计算模型和方法符合公路空间的实体关系,且其视距计算可考虑到路侧植物、护栏、标志牌等影响,因而测算结果更为准确。实际工程验证表明:“视线棱体”计算模型和方法的测算成果是可靠准确的;该方法和技术为公路尤其是双车道公路行车视距分析提供了科学而实用的技术手段,对公路安全设计与评价具有重要作用。
Aiming at the status quo and existing problems of distance measurement in China, based on the digital simulation model technology, a new spatial distance estimation model based on “sight prisms ” is proposed, and the “sight prisms ” And the relevant criteria of the road surface visibility of highway model are researched. Based on this principle, the corresponding application software technology is developed to effectively improve the calculation accuracy of the vehicle line of sight. Because the model and method are in accordance with the physical relationship of road space, The calculation from the roadside plant, guardrail, signs and other effects can be taken into account, so the calculation result is more accurate. The actual engineering verification shows that the calculation results of the “Sight Prism” calculation model and method are reliable and accurate. The method and technology provide a scientific and practical technical method for the line of sight analysis of highway, especially two-lane highway, Safety design and evaluation have an important role.