中文摘要：

传统城镇街道网络受地形、历史发展格局等因素影响,呈现出小尺度、疏密结构复杂等特征。本文选取＂汶川地震＂受灾严重的羌峰村,模拟震后街道通行的＂资源＂分布,进行交通网络需求与网络空间表征、网络节点连接距离的关联性研究,并构建街道网络的优化格局。研究结果表明：引力场安全格局模型参数中,节点介中心值可较好反映人们对最短路径的选择倾向和街道网络流量的变化趋势,而街道空间句法的中心性、最短路径中心性、激发引力场的安全格局中心点介中心性均有高度一致性和可辨性;通过引力场优化模型提出的避让策略缓解了节点的拥堵程度,使整个街道网络呈现出动态平衡的状态,形成了高效街道网络的引力场安全格局。

英文摘要：

Traditional urban street network shows small scale and complex density structure features because of topography, history, development and other factors. This paper targets on Qiangfeng Village, a humanistic style town surviving Wenchuan Earthquake, simulates ＂resources＂ distribution of street network after the earthquake, analyses the relationship between traffic network demand and network space representation, the connection distance of net work nodes, and creates optimization pat ter n of st reet net work. In the model of security pattern of gravitational field, the simulated results indicate that node intermediate value can better ref lect the selection preference of shortest distance and the variation trend of street network traff ic by analyzing the model parameters. However, the centrality of the street space syntax and shortest distance, center and centrality of security pattern of activating gravitational field both show high consistency and differentiability. Relieving the congestion of the nodes make street network show a state of dynamic equilibrium and form efficient security pattern of gravitational field of street network through avoidance strategy provided by optimal model of gravity field.