| 基于倒函数的立交匝道设计方法研究 |
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| 引用本文： | 曹雷,李植,李刚. 基于倒函数的立交匝道设计方法研究[J]. 西部交通科技, 2011, 0(11): 66-69,74 |
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| 作者姓名： | 曹雷 李植 李刚 |
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| 作者单位： | 广西壮族自治区交通规划勘察设计研究院,广西南宁,530011 |
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| 摘 要： | 文章将倒函数的概念、原理应用到立体交叉线形优化设计中,提出一种采用倒函数y=a/x作为立体交叉右转匝道线形的方法,分析了该函数线形相对一般采用的缓和曲线-圆曲线-缓和曲线的比较优势,并结合计算实例介绍了用倒函数设置立交右转匝道的具体求解方法。
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| 关 键 词： | 道路工程 倒函数 立体交叉 右转匝道 曲率半径 |
The Study on the Design Method for Vertical Crossing Ramp based on Backward Function |
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| CAO Lei,LI Zhi,LI Gang. The Study on the Design Method for Vertical Crossing Ramp based on Backward Function[J]. Western China Communication Science & Technology, 2011, 0(11): 66-69,74 |
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| Authors: | CAO Lei LI Zhi LI Gang |
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| Affiliation: | CAO Lei,LI Zhi,LI Gang(Guangxi Communication Planning Surveying and Designing Institute,Nanning,Guangxi,530011) |
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| Abstract: | The article uses the general concept,principle and application of backward func-tion in the vertical crossing optimum design.It also proposes a method that uses y=a/x as right turn ramp linetype,and analyzes the comparative advantage of this method with com-monly used easement curve-circular curve-easement curve.Combined with the calculation practice,the detailed solution of using backward function on setting such linetype is intro-duced. |
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| Keywords: | Road construction Backward function Vertical crossing Right turn ramp Radi-us of curvature |
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