Analysis of the influence of road network capacity degradation on the service performance of regional road infrastructure
In order to improve the accuracy of the infrastructure service performance prediction model,a quantitative study is carried out on the influence of road network capacity degradation on the service performance of regional road infrastructures.From the perspective of regional road network,a facility criticality evaluation index Km based on the influence on the overall travel cost of the road network is proposed to determine the regional key sections that have a significant influence on the traffic capacity of road network.Since the existing performance prediction model does not take into account the degradation of road network capacity caused by sudden damage events,the revised equation of regional road infrastructure service performance prediction model under the degradation of road network capacity is established according to the equivalent load,and the revised effect of the equation is verified with an engineering example.The results show that the criticality evaluation index Km can not only be used to evaluate the influence of regional facilities on road network capacity,but also reflect the anti-damage performance of road network capacity.The performance prediction values treated by the modified equation are basically consistent with the evolution law of the measured values,and the modified equation has a good correction effect.
NETL
NSTL
万方数据
