Characteristics analysis of urban road netw ork based on spatial syntax in Lanzhou City
This paper uses urban road networks of main urban area in Lanzhou City in 2015 as the object of study,the characteristics of connectivity,control value,global integration value,local integration value and intelligence index respectively by space syntax model.The resuts show that:the urban road network of Lanzhou City has not formed a complete and unified style structure such as grid type or annular radiation type,however,it shows valley ribbon group spatial distribution characteristics which formed by four groups named Chengguan District,Qilihe District,Anning District and Xigu District,and each group has a relatively independent grid road network and a loose connection among groups,and so lead to low uniformity and poor integrity.The urban road network has a low selectivity characteristics under low connectivity value and control value,and transverse road traffic selectivity are much higher than longitudinal road traffic selectivity in high connectivity value and control value.Whatever the global integration value at city level or local integration value at district level,its spatial distribution characteristics present a single center structure,w hich indicates that the distance closer to the center,the topological accessibility is higher,and the distance farther from the center,the topological accessibility is lower.The intelligibility of urban road network has a moderate connected space perception from local space versus w hole space in urban scale,and has a strong connected space perception from local space versus w hole space in district scale,w hich are affected by the valley space environment of Lanzhou City.
urban road networkspatial syntaxmain urban area in Lanzhou City
国家科技期刊平台
NSTL
万方数据
维普
