Abstract: The traffic impact analysis of large-scale building is more and more emphasized by the transportation engineering experts, the city planning and managements. How to predict the impact on the surrounding road network is the core problem in traffic impact analysis. Three-layer BP network predict model on traffic impact is built up according to the basic theory of artificial netural network, and the feasibility of the method is proved by taking Chongqing Nan'An sports center as an exemple.

Key words: large-scale building, traffic impact, forecast, BP network

摘要： 对大型规划项目进行交通影响分析越来越受到交通工程专家和城市规划管理部门的重视,如何科学预测项目建成后对周围路网的交通影响是交通影响分析的核心。根据人工神经网络原理建立了三层BP神经网络预测模型,并以重庆南岸体育中心为例,说明了方法的实用性。

关键词: 大型建筑, 交通影响, 预测, BP神经网络