关键词: 城市交通, 社会网络理论, 活动&mdash, 出行, 个人角色, 家庭关系, 家庭结构

Abstract:

The joint decision-making behaviors such as companion, substitution, complementary exist generally in family activities. However, ignoring the irrational characteristics of traveler as a society and the self-organization characteristics of interactions between family members, most studies on travel behavior take individual as decision-making unit and model based on the utility theory of microeconomics. On the basis of time and space constraints, this paper emphasizes the influence of the social relationship to individual behavior, integrates time geography and social network theory of study to individual. Firstly, a role-measured indicator is put forward to reflect the position of individual in family network structure, and we obtain the typical household interaction modes and their characteristics. After that, a SEM of individual activity-travel choice is constructed based on obviously interaction network of family relationships. In conclusion, the external constraints of individual for participating activities not have a directly effect on individual’s own, but balanced through internal network relationship of family, the low-restrict member role who has a higher- priority of household resources would like to help the high- restrict member role. Especially, considering family structure is not only benefit a refined model, but also help a good understand for model, which ultimately realizes the full appreciation for individual’s activity-travel behavior.

Key words: urban traffic, social network theory, activity- travel, individual role, household interactions, family network structure