【摘要】 根据动力学原理,对汽车在弯坡路段上的运行状态及行车安全性进行了分析。认为弯坡路段之所以成为车辆运行安全隐患的原因是由于设计速度与车辆实际运行速度不协调造成的,在弯坡路段的线形组合设计中应根据车辆的实际运行速度选用技术指标。利用Matlab绘制出在不同设计速度下,坡长、坡度与速度的关系图及“速度与半径的关系图”,为设计公路在弯坡路段的线形组合中合理选取技术指标提供了依据。更多还原

【Abstract】 The vehicle’s running state and running safety on curved section of highway are analyzed by dynamics principle.It is pointed out that the accidents at the curved section of highway is caused by the alignment design.The design velocity at the curved section does not cover the vehicle running velocities,the technical parameters for alignment design should be coordinated with the vehicle’s actual running velocities.The figures of the lengthe,degree of grade line with velocities,and the figures of velocities with the radius of horizontal curves under different design velocities!are presented to provide a basis for selecting technical parameters in alignment design.3 tabs,2 figs,10 refs.更多还原