Abstract:
Nowadays, the sociology of urban space has been the focus of researchers in urban planning
and design fields. This has caused the cities and urban spaces within these cities to be
considered more than the bodies in them and the relatively large structures in which they were
built. In comparison with other sociological factors, vitality in urban spaces is a factor that
has been given special attention. This kind of expectations would arise immediately after the
introduction of the urban space in the minds of citizens. In fact, one of the most promising
expectations of people from urban spaces is the dynamism and liveliness of that space, which
is understood as the concept of urban vitality. It seems that the factor that plays a vital role in
creating this vitality is the existence of activities in the context of urban spaces. The research
tries to investigate the effect of existing activity patterns on the vitality of urban spaces. The
Vali Asr Crossroad in Tehran have been identified as a key point in the heart of Tehran and in
the structure of Tehran, and It is a totally urban space full of activity patterns, but studies show
that vitality in this space is not at the optimal level. For this reason, the study of vitality based
on activity patterns in this important urban space is investigated. In the analytical section, a
questionnaire based on a conceptual model was designed and then a regression model was
used to analyze the results.The results show that the factor of performance as a vital variable
in promoting social interactions and as a result of creating vitality at the Vali Asr crossroad
plays an important role. Meanwhile, the two factors of static / dynamic activity and diversity
at Vali Asr crossroad are factors weakening social interactions and urban vitality.