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通过分析高速公路大修采用半幅封闭半幅通车施工方案时车辆的行驶轨迹特点,在建立中央分隔带开口车辆运行分析模型的基础上,推导了大修路段中央分隔带开口长度计算模型,并给出了在不同限制速度、中间带宽度、内侧车道宽度和超高情况下中央分隔带开口长度建议值。在铜(川)黄(陵)高速公路路面大修中的应用结果表明,采用推荐的中央分隔带开口长度值后,大修路段的通行能力和安全性均得到了明显改善。
Based on the analysis of the driving characteristics of vehicles with half-width and half-opening traffic construction scheme, the calculation model of the opening of the central divider of the overhaul section is deduced based on the analysis of the vehicle running analysis model with the opening of the central divider belt. Recommended values for the length of the center divider opening at various speed limits, mid-widths, inside lane widths and under extreme highs. The application results in the overhaul of the pavement of the Tong (Huang) Huang (Tomb) Expressway show that the passage capacity and safety of overhaul sections have been significantly improved with the recommended opening length of the central divider.