Quantitative Research On The Form Of Street Interface

The paper developed a quantitative method of using two parameters to describethe street interface, which could be used as an effective technical means to control thestreet interface based on the urban situation in China. The paper is composed by twomain parts: the theoretical exploration part and the practical application part.In the theoretical exploration part, the paper established the “physical form–psychological perception” research framework of street interface by experimentalpsychology theory. By using virtual reality technology to do psychological cognitiveexperiment, the paper found that the enclosing level and the extent of near-line are themost concerned interface characteristics in perception. By using psychophysics andspace perception theory in experimental psychology, this paper developed thequantitative method using Interface Density and Near-line Ratio to describe the maincharacteristics of street interface.In the practical application part, the paper analyzed the pattern of Street InterfaceDensity first. By analyzing urban samples, the paper discovered that Street InterfaceDensity has approximate positive correlation with District Building Coverage Ratio,and this ratio has approximate negative correlation with Block Scale. By analyzingstreet samples, the paper showed that density-index of street is more efficient thanscale-index. With studying the commercial pedestrian streets in main cities of China,the paper found that small block scale is a necessary condition to excellent streets.And generally speaking, the Interface Density of excellent streets is always above70%.Then the paper analyzed the pattern of Near-line Ratio. By analyzing streetsamples, the paper found that in manual planning urban fabric, the major streetinterfaces in European and American cities are always neat and straight, while inChina always irregular. Different urban planning regulation is the direct causation, butthe fundamental reason is the different architectural culture traditions. The westerntraditions such as small block scale, emphasizing urban public spaces, and focusingon building fa ades make the street interface straight. While the Chinese traditionssuch as big block scale, regarding Men-tang System as the orthodox ritual inarchitectural layout, and the irregular appearance of wooden architecture, the patternof assembling single buildings make traditional street interface irregular. By analyzingthe excellent streets in China and abroad, the paper found there is no absolutecorrespondence between the Near-line Ratio and comfortable street space.The paper took Jiefangbeilu historic conservation area in Tianjin as a case study,analyzed the characteristics of the street interface by the quantitative method of usingInterface Density and Near-line Ratio, then converted the control parameters intodrawings in parcel level in the conservation planning, in order to guide the organicrenewal of buildings along the street.The case study showed the effectiveness of the quantitative method, and alsoshowed that the research has not only theoretical but also practical significance.