| B型喇叭立交环形匝道线形安全性设计探讨 |
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| 引用本文： | 左伟平,刘海中.B型喇叭立交环形匝道线形安全性设计探讨[J].城市道桥与防洪,2012(9):21-23,41. |
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| 作者姓名： | 左伟平 刘海中 |
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| 作者单位： | 铁道第三勘察设计院集团有限公司,天津市300251 |
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| 摘 要： | 通过分析车辆在B型喇叭立交环形匝道上的交通特性,提出了B型喇叭立交环形匝道线形指标的取值范围(如设计速度、平曲线半径等);通过分析B型喇叭立交安全运行的影响因素,总结了六种提高B型喇叭立交运行安全性的措施;最后建议B型喇叭立交环形匝道宜采用水滴形卵形曲线来布设,并结合实例阐述了该方法在B型喇叭立交设计中的具体应用。
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| 关 键 词： | B型喇叭立交 环形匝道 安全性措施 卵形曲线 |
Discussion on Security Design of Loop Ramp Alignment of B-type Trumpet Interchange |
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| Zuo Weiping,Liu Haizhong.Discussion on Security Design of Loop Ramp Alignment of B-type Trumpet Interchange[J].Urban Roads Bridges & Flood Control,2012(9):21-23,41. |
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| Authors: | Zuo Weiping Liu Haizhong |
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| Institution: | Zuo Weiping,Liu Haizhong |
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| Abstract: | According to the analysis on the traffic characteristics of the vehicles on the loop ramp of B-type trumpet interchange,the article puts forward the range of alignment index on the loop ramp of B-type trumpet interchange,such as design speed,horizontal curve radius and etc.Based on the analysis of the factors to influence the safe operation of B-type trumpet interchange,the article sums up six kinds of measures to improve the operation security of B-type trumpet interchange,proposes to use the layout of oval curve as a drop of water suitable for the loop ramp of B-type trumpet interchange type,and sets forth the specific application of this method in the design of B-type trumpet interchange by the engineering cases. |
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| Keywords: | B-type trumpet interchange loop ramp security measures oval curve |
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