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互通式立交匝道连续分流点最小间距研究

DOI: 10.3969/j.issn.1674-0696.2014.02.23, PP. 103-107

Keywords: 交通工程,互通式立交,臣道,连续分流区,最小间距,车道变换模型,trafficengineering,interchange,ramp,successiveexitarea,minimumspacing,lane-changemodel

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Abstract:

:?匝道连续分流点间距是互通式立交规划设计的重点,对交通运行有重要影响。研究首先分析了交通量、运行速度、交通标志布置对匝道连续分流点最小间距的影响;其次,结合现场调研,分析匝道连续分流区车辆换道行为和不同换道型式下最小间距组成,运用交通冲突技术对不同车道变换型式进行交通安全评价;基于驾驶员行为理论和可接受间隙理论,从交通标志识认距离、车辆换道所需的最小安全距离、减速车道长度等3方面,建立互通式立交匝道连续分流点最小间距计算模型;最后通过实例验证了最小间距计算模型的可靠性,可以为山地城市互通式立交规划设计提供技术参考。

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