基于驾驶负荷模型的高原弯坡组合路段安全性分析与评价

为了解驾驶员安全舒适度评价指标(驾驶负荷)在高原公路弯坡路段的变化特征,利用生物反馈仪等相关设备,在海拔大于3 000~5 000 m的高原公路选取符合标准的弯坡路段62段进行行车试验。定量分析了驾驶负荷与海拔、高原公路弯坡路段线形组合值之间的变化关系;并且建立了相关模型。结果表明,驾驶员在高原公路弯坡路段行车过程中,驾驶负荷受到海拔与弯坡路段线形组合值的双重影响;驾驶负荷随着海拔的升高而增大;上下行过程中,驾驶负荷随着弯坡路段线形组合值的增大而增大;在海拔与弯坡路段线形组合值的共同作用下,驾驶负荷变化更加明显,海拔越高、弯坡线形组合值越大,驾驶负荷越大。

Safety analysis and evaluation of combination of vertical and horizontal curves on plateau highway based on driving load

In order to understand the change features of driving load on curved section of plateau highway, using the biofeedback instrument and the related equipment to do a traffic test on an altitude more than 3000 meters of curve section of plateau highway in total 62 segments. Analyzing the variable relationship of driving load with altitude and the liner combination of values, and building the relative model. The result shows that the driving load can be affected by the altitude and the liner combination value of curving slope sections, besides, with the increasing of altitude and liner combination values, the driving becomes larger. The driving change is so obvious in the influence of altitude and liner combination value, and the higher altitude and the liner combination value, the larger the driving load.