针对昭会高速公路改扩建工程中利用既有道路出现的双路拱设计的需求,从车辆运动的力学原理及驾驶行为出发,通过理论分析、工程试算对双向路拱条件下车辆多种典型行驶方式下的安全性进行了研究,结合工程特点提出了昭会高速公路改建工程双向路拱的优化改善方案,为提高昭会高速公路通车后的交通安全水平提供了支撑。 Aiming at the demand of double-arch design using the existing roads in the reconstruction and expansion project of Zhaoghui Expressway, from the mechanics principle and driving behavior of vehicle movement, through theoretical analysis and engineering trial, The safety under driving mode is studied, and the optimization and improvement scheme of bidirectional road arch for the reconstruction project of Zhaoghui Expressway is put forward according to the engineering characteristics, which provides the support for improving the traffic safety level after the opening of Zhaoghui Expressway.