OALib Journal期刊
ISSN: 2333-9721
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基于运行安全的公路隧道进出口线形设计
, PP. 134-138
Keywords: 交通工程,隧道进出口,回归分析,线形设计,运行安全
Abstract:
为提高公路隧道进出口区域的运行安全,对该区域的线形设计进行深入研究。针对隧道进出口区域的运行环境过渡特征,基于隧道进出口前后5s设计车速行程范围的平纵面线形要素的科学组合,构建了隧道进出口线形过渡技术指标,用于衡量隧道进出口区域线形设计的安全性。鉴于我国目前隧道进出口事故资料的统计尚不完善,选用运行车速差作为中介指标采用间接分析法进行研究,提出了基于运行车速差的隧道进出口区域运行安全性的评价方法和评价标准。并在理论分析的基础上,对实测隧道进出口线形和运行车速数据进行了统计分析,建立了隧道进出口线形过渡技术指标与运行车速差的二元回归关系模型。据此提出了基于运行安全的隧道进出口区域线形设计的建议值。
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