对交通影响分析阈值确定方法的初步探讨

Primary Study on Determination Method of Traffic Impact Analysis (TIA) Threshold

交通影响分析阈值的确定,是进行交通影响分析的关键问题,通过对国外交通影响分析阈值研究的分析,结合我国城市交通特点、交通基础研究状况、土地开发和经济水平,建立了适合我国城市特点的交通影响分析阈值理论和方法。根据建设项目产生的交通量、开发类型、开发强度和开发区位等因素,将阈值分为高峰小时交通量阈值、建设项目日交通量阈值、建设项目高峰小时出行总人次阈值、建设项目土地利用类型阈值、建设项目规模阈值、服务水平阈值和最大出行时间阈值等等,并提出了各类阈值的具体确定方法。最后以北京市某区域TIA阈值的确定为例,提出了应进行交通影响分析的具体情况。

The decision of TIA threshold is one of the most important problems. The authors analyze the present situation of the research about TIA threshold abroad, study China' s city traffic characteristics, basic traffic research situation, land development and economic level, and establish for the first time the theory and method of TIA threshold which adapt to China' s city characters. According to the volume of traffic produced by building item, the development type, intensity and location, etc, the threshold is divided into peak hour traffic, day traffic, total travel person-time in peak hour, development type and intensity, service level and the maximum travel threshold, etc. and the special method to decide all the thresholds is also put forward. At last taking the decision of TIA threshold of a certain area of Beijing for example, the authors express their viewpoints on threshold.