Measuring the Response of Metro Network Stations as Underground Urban Spaces (Case Study: Tehran Metro Network)

Tendency toward physical development in underground due to shortage of land and rapid grout of metropolitan areas is taken into consideration in recent contemporary period. Reduction of traffic congestion, the problem of high density built form, and also solving other related problems of inhabitants, is an avoidable approach at present. Although there are many ideas and views to develop underground spaces by what has happen in various cases in Tehran, but it is not efficient and acceptable. Study and elaboration of various such cases in Tehran can help in clarification of the problem and also provide practical solution for upgrading these complexes of public urban spaces. The aim and objective of the research is to create comprehensive urban design criteria underground which are efficiently responsible. Therefor the question raises here are: 1. How UPUS(Underground Public Urban Space) can be more responsive and efficient? The methodology use in this research is combined quantitative and qualitative analyses. Through which beside literature review survey and observation of 10 cases of UPUS is done. Finally is concluded that the spaces of Sadeghieh, Eramsabz, seems to be efficient, but Imam Khomeini and Golbarg seems to be not efficient as such. Finding and result of the research indicate that there are lack of comprehensive urban design criteria. Accessibility and security are the main 2 points in compare to the other aspects in designing of metro station as a public space. Conviviality and relation of form and function of the other aspects which are not taken as such.