关键词: 城市空间结构, 通勤行为, 成都市, 兰州市, urban spatial structure, commute travel, Chengdu city, Lanzhou city

Abstract: This study establishes a formula of influence degree of urban spatial structure on residents' commute travel base on the theory of excess commuting. The empirical studies on the quantitative analysis of the influence degree of different urban spatial structure on residents' commute travel are made in this paper based on large scale questionnaire investigation of commuting. By the case studies, we find that urban spatial structure has a lower influence degree on residents' commute travel than commuters' socio-economic attribute. In order to reduce the commuting distance, urban spatial structure should be adjusted, and what's more, the factors that restrict the freedom to choose employment and housing location must be reduced. By comparison of the difference of commuting distance and excess commuting between Chengdu and Lanzhou, it shows that multi-center city has a shorter commuting distance and higher commuting efficiency than the single-center city on the condition of jobs-housing balance.