Abstract
ABSTRACTNewly-built high-rise buildings exert an unneglectable influence on the original urban outer spatial form. The visual preference evaluation of this influence can be taken as a key reference factor for the evaluation of public acceptance in the course of urban modernization. This paper sets two representative buildings of Shanghai as the research objects: The Oriental Pearl Radio & TV Tower, serving as the original urban landmark, and Shanghai Tower, representing the newly-built high-rise building. Relative height ratio, relative mass ratio, and relative distance ratio of the two buildings at different viewpoints are set as the physical properties. Eight key observation sites were selected as the viewpoints where photos of the two buildings were taken. Then, photo stimulation experiments were conducted with participants and the results were analyzed. The analytical results indicate that newly-built high-rise buildings exert certain influence not only on the urban outer spatial form centering around original urban landmarks, but on the potential change of urban viewpoints as well. The value ranges of relevant physical properties are also influential to visual preference evaluation. Height ratio (0.75, 1.00) and (1.50, 1.71), mass ratio (0.75, 1.10), and distance ratio (0.60, 0.78), the visual preference evaluation would be scored comparatively higher.
Highlights
In terms of urban spatial form, urban landmarks are of great significance for the urban image and overall style
The experimental results of a photo’s physical property indicate that the visual preference evaluation would be scored relatively high when the relative height ratio is within the intervals (0.75, 1.00) and (1.50, 1.71), and the relative mass ratio is within the interval (0.75,1.10)
When the relative mass ratio is within the interval (0.75, 1.10), the visual preference evaluation scores corresponding to viewpoints A2 and A3 are comparatively higher than other experimental objects
Summary
In terms of urban spatial form, urban landmarks are of great significance for the urban image and overall style. Urban landmarks are important carriers of urban history and culture and display the unique characteristics of a certain city that are formed over time (Li 2012). Many cities of developing countries are keen on building urban landmarks to demonstrate their images among world metropolitan groups (Yun 2019). In the context of rapid urban development in China, the surroundings of many urban landmarks are changing all the time (Wang 2018). The newly-built high-rise buildings exert various influences on the city and its central district, especially on the original urban architectural heritage (Short 2007). The increasing number of buildings and higher structures exert an unneglectable impact on the original urban spatial form, especially the original urban landmarks
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