小汽车尾号限行下的碳排放测算分析

为了定量分析尾号限行对城市交通碳排放的影响,建立了小汽车尾号限行下的碳排放测算模型.首先分析了尾号限行对小汽车出行量的影响,在假设限号前后小汽车出行量随时间变化基本一致的前提下,利用历年统计的小汽车日出行量随时间变化的函数关系得到限号后的一天内不同时间的小汽车出行量.根据UE准则得到路网中每条路段的分配小汽车流量,再根据格林希尔治模型得到每条路段车流速度,利用TRANSYT 7-F模型推算出每条路段在高峰时段内及全天的碳排放量,从而得到整个城市路网的全天碳排放量模型.最后通过简单的实例对该方法进行分析,表明该方法具有一定的合理性和准确性.

Calculation of Carbon Emission of Urban Districts during Vehicle Restriction by Tail Number

For a quanlificational analysis of the influence of vehicle restriction by tail number on the car emission of urban distriets,the carbon emission calculation model with vehicle restriction was established. Firstly,the impact of vehicle restriclion on car trips was analyzed,and on the assumption that car trips over time were basically consistent before and after restriction,ear trips of different periods in a day was obtained by the function of car trips over time based on historical statistics of the city. According to the rule of UE,the car distribution of every road of the network was acquired, and according to the Green Shields model, the vehicle speed of each road was calculated. The TRANSYT 7 - F model was adopted to calculate the carbon emission of each road in the peak hour and a whole clay,and then the carbon emission of a whole day of the road networks was gained. Finally, a case study indicated that the method was relatively reasonable and accurate.