Evaluation Method of Highway Using Quality Based on Vehicle Dynamic Response Model

Based on the method of system-dynamic research in vehicles,the brief 4 wheels 5 dimentions vehicle systemic vibration model is established;some dynamic indexes are selected,and then the evaluation function is operated by simulating on some highway design project section.The result shows that the dynamic model is less sensitive to the change of velocity,but more sensitive to the change of plain and vertical indexes than the traditional rigid model.It shows that traditional design tends to be conservative on the adoption of design indexes and may cause waste of resource due to the vehicle-rigid body hypothesis and preference for safety demand;and also shows that less consideration is given to the highway using quality which often leads to the decline of comfort and unification.