基于《公路通行能力手册》中设计速度为80km/h的高速公路服务水平分级标准中速度和密度的关系,采用VISSIM软件支持的微观交通流仿真的手段,在保证通行能力和期望速度与实际相符的情况下,得出不同交通组成与交通量情况下的双向8车道高速公路施工封闭半幅采用双向4车道通行时施工作业区长度的建议值。 Based on the relationship between speed and density of expressway service level grading standards with a design speed of 80km / h in the Manual on Road Capacity, using the microscopic traffic flow simulation method supported by VISSIM software, in ensuring the traffic capacity and expected speed are in line with the actual The proposed value of the length of the construction work area when two-way four-lane traffic is adopted for construction of a two-way 8-lane expressway with a closed half-width with different traffic composition and traffic volume is obtained.