基于高速公路空间几何特性的线形协调性设计评价  

Coordination Design Evaluation of Expressway Alignment Based on Spatial Geometric Properties

作　　者：邢小亮 陈雨人[1] 李璨 周可夫 XING Xiaoliang;CHEN Yuren;LI Can;ZHOU Kefu(Key Laboratory of Road and Traffic Engineering of the Ministry of Education,Tongji University,Shanghai 201804,China;China Xiongan Group Infrastructure Construction Co.,Ltd.,Baoding 071700,China;Highway Monitoring and Response Center of the Ministry of Transport,Beijing 100029,China)

机构地区：[1]同济大学道路与交通工程教育部重点实验室,上海201804 [2]中国雄安集团基础建设有限公司,河北保定071700 [3]交通运输部路网监测与应急处置中心,北京100029

出　　处：《同济大学学报（自然科学版）》2022年第8期1180-1188,共9页Journal of Tongji University:Natural Science

基　　金：国家重点研发计划(2018YFB1600305)。

摘　　要：为对高速公路线形协调性设计进行有效的评价和指导,利用驾驶模拟和实车试验获取车辆运行数据,提出一种基于线形空间几何特性参数拟合的协调性设计评价模型,并给出了指标选用及优化措施。首先,分析了优先进行线形协调性设计的特征指标,以曲率k和挠率τ作为描述高速公路线形空间几何特性的的特征参数。其次,结合驾驶模拟实验和实车试验,通过多元非线性拟合建立一般路段线形设计协调性与曲率差Δk、挠率差Δτ的二元多项式评价模型,并通过调整横断面和安全设施信息对模型进行修正。结果表明,该模型能较好地反映线形指标、横断面信息、交通安全设施与车辆运行状态间的作用关系,为高速公路线形协调性设计和应用研究提供指导。最后,通过反推Δk、Δτ取值范围,提出了指标选取的依据和优化措施。To effectively evaluate and guide the coordination design of expressway alignment,this paper proposes an evaluation model based on alignment geometric parameter fitting,which uses driving simulation and real vehicle test to obtain vehicle operation data.The index selection and optimization measures are presented afterward.First,the indexes that give priority to coordination design are selected and the curvature k and torsionτare proposed as the spatial characteristic parameters of alignment.Then,a binary polynomial evaluation model is established to evaluate the design coordination of alignment flexibility and curvature differenceΔk and torsion differenceΔτby multivariate nonlinear fitting in combination with driving simulation experiment and real vehicle test.After that,the model is modified by adjusting the cross section and safety facilities.The results show that the evaluation model can better reflect the relationship between alignment index,cross-sectional information,traffic safety facilities,and vehicle operation estate.Furthermore,it provides guidance for the design and application of expressway alignment coordination.Finally,the basis of index selection and optimization measures are presented by deducing the value range ofΔk andΔτ.

关 键 词：高速公路 协调性设计 空间几何特性 曲率差 挠率差 多元非线性拟合 

分 类 号：U412.36[交通运输工程—道路与铁道工程]