In order to determine the widening value of one-way two-lane interchange ramps under different conditions,this paper compares and analyzes the calculation ideas of widening value in Chinese,Japanese and American specifications,puts forward a more reasonable calculation method of one-way two-lane ramp widening,analyzes the influence of design speed and curve radius on the widening value,modifies the widening value of type Ⅱ ramp in Guidelines For Design of Highway Grade-Separated Intersections,uses the simulation software Vissim to analyze the traffic conditions of lane width in different traffic environments,and introduces the widening calculation in detail in combination with engineering practice.The analysis can provide a reference for pavement widening of one-way two-lane interchange ramps.
维普
万方数据