高速环道几何线形设计与舒适度评价

Geometric Alignment Design and Comfort Evaluation of Highway Loop

高速环道是汽车试验场最重要的试验道路,需要提供连续高速行驶的试验条件,要求在不同试验车速的情况下获得稳定的汽车试验数据。高速环道平面几何线形由直线、圆曲线和缓和曲线组成,横断面呈现为曲面形态,纵断面需实现设计车道中心线的高程变化连续。由于试验汽车运行速度高、行驶时间长,需要提供安全舒适的道路条件,保障汽车试验员操作安全。因此,高速环道几何线形是汽车试验道路设计的关键,有必要对选用的几何线形进行舒适度评价。

The highway loop is the most important test road in the vehicle test field.It is necessary to provide the test conditions for continuous high speed driving and obtain stable vehicle test data at different test speeds.The plane geometric alignment of highway loop consists of straight line,circular curve and transition curve,its cross section is curved and its longitudinal section should realize the continuous elevation change of the center line of the designed lane.Due to the high speed and long driving time of the test vehicle,it is essential to provide safe and comfortable road conditions to ensure the operation safety of the vehicle tester.Hence,the geometric alignment of the highway loop is the key to the design of vehicle test roads,and its comfort needs to be evaluated.