Influence of Spatial Geometric Properties of Highway Alignments on Vehicle Kinematics

doi:10.11908/j.issn.0253-374x.2016.12.009

Home > Archive>Volume 44, Issue 12, 2016 >1867-1872. DOI:10.11908/j.issn.0253-374x.2016.12.009

Influence of Spatial Geometric Properties of Highway Alignments on Vehicle Kinematics
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                        10.11908/j.issn.0253-374x.2016.12.009
                    
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                        GE TingGE Ting
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China; School of Civil Engineering, Suzhou University of Science and Technology, Suzhou 215011, China
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FU XinshaFU Xinsha
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
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LI HaifengLI Haifeng
School of Geosciences and InfoPhysics, Central South University, Changsha 410007, China
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LONG LidunLONG Lidun
School of Civil Engineering and Transportation, South China University of Technology, Guangzhou 510640, China
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Abstract:

Firstly, curvature and torsion instead of traditional twodimensional (2D) horizontal and vertical indexes were used to describe the spatial geometric properties of highway alignment according to the curve theory of differential geometry. Then the vehicle was treated as a rigid body and a new motion model was established with the curvature and torsion as the control variables base on the Frenet Frame. Finally, an example was analyzed to demonstrate the influence of spatial geometric properties of an existing highway on vehicle kinematics. It is found that the setting of curvature plays a leading role in the spatial motion, while the torsion affects the motion less. The coupling effects of horizontal and vertical alignments were ignored during traditional design process, which led to the continuity degradation of curvature and torsion, and directly affected the smooth variation of vehicle motion and driving comfort.

Key words:highway; spatial geometric properties; curvature; torsion; Frenet Frame; kinematics

Reference

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GE Ting, FU Xinsha, LI Haifeng, LONG Lidun. Influence of Spatial Geometric Properties of Highway Alignments on Vehicle Kinematics[J].同济大学学报(自然科学版),2016,44(12):1867~1872

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Received:June 11,2015
Revised:October 31,2016
Adopted:October 09,2016
Online: January 10,2017
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