| 1. | Application of n - th clothoid to design oval horizontal alignment
次回旋线在卵形平面线形设计中的应用 |
| 2. | Discussion on relationship between expressway crash and horizontal alignment
高速公路平面线形与安全关系的探讨 |
| 3. | This article establishes a highway horizontal alignment design method bused on cubic - hermite interpolating function , which has a practical reference for future work
本研究建立了公路平面线形设计的埃尔米特插值函数方法，可供公路平面线形设计工作参考。 |
| 4. | The cubic - spline function applied in design of highway horizontal alignment isn ' t convenient in practice because of no united function and its intricate calculation
摘要三次样条函数在公路平面线形设计中有广泛的应用，但由于没有统一的函数表达式且计算量大，因而在应用上不便。 |
| 5. | The experiment shows that its results are close to ones of cubic - spline function , and fit to the criterion of jtj011 - 94 requirement
公路平面线形实例设计表明，三次埃尔米特插值函数用于公路平面线形设计中，能够满足路线设计规范( jtj011 - 94 )的要求，其设计结果与三次样条函数设计结果接近。 |
| 6. | The article studies how to create 3 - dimensional model of crossroads in virtual environment and discusses mathematics model of horizontal alignment , the paper explains crossroads data visualization and defines data structures of visual data
本文从虚拟现实建模入手，研究虚拟环境下的立交桥三维建模方法，探讨基于约束的平面线形的数学模型。 |
| 7. | The design methods and algorithms applied in computer aided road design system are presented in chapter 3 : draw - out algorithm of contour line , plane - design methods etc . we put highlight on the plane - design method and our improvement on this aspect
第三章介绍计算机辅助道路设计系统中所采用的一系列算法，主要包括等高线抽取算法，选线定线算法，平面线形设计算法等等，其中重点介绍平面线形设计算法以及本文对现有算法所作的改进。 |
