Research on the Protection and Renewal of Urban Historical and Cultural Districts from the perspective of Scene Theory - Double Degree, Tongji University

With the deepening of China's urbanization process, urban construction has gradually moved from the stage of high-speed development to the stage of high-quality development. In this context, as a concentrated embodiment of the city's material and cultural heritage and cultural style, historical and cultural blocks are of significant significance toshow the city's characteristics and promote high-quality development. However, with the rapid evolution of the consumption era, the spatial structure of historical and cultural blocks has undergone profound changes, and the traditional residential space has gradually integrated into the consumption space elements. In this process, due to the excessive pursuit of short-term interests by policy makers, the rapid influx of a large number of commercial elements often destroys the authenticity and integrity of the blocks, resulting in a huge waste of resources and funds. As a theoretical framework to examine urban space from the perspective of consumers, the scene theory has the characteristics of integrity and dynamism, and provides a quantitative scene measurement method, which provides a new research perspective for the protection and renewal of historical and cultural blocks. Taking Luoyang Dongxinanyu historical and cultural blocks as an example, this paper comprehensively uses theoretical research and empirical analysis methods to deeply explore the influence mechanism of multi-type scenes in historical and cultural blocks, and puts forward corresponding scene planning and promotion strategies. In terms of theoretical research, this paper defines the concepts of scene theory and historical and cultural block by systematically combing relevant literature, and sorts out the existing scene recognition and measurement methods. On this basis, a scene recognition and measurement system suitable for historical and cultural blocks is constructed. At the same time, through literature analysis, the key elements affecting the spatial environment of historical and cultural blocks are screened out, including four major indicators and multiple subordinate factors, such as block traffic, traditional street space, historical elements and facility elements. In the empirical analysis stage, this paper adopts qualitative analysis method to identify the characteristics of the historical and cultural blocks in Luoyang, and summarizes three major types of scenes: life continuation, street consumption and cultural experience. Then, through the field research method of behavior annotation, all kinds of scenes are measured, and the spatial distribution characteristics of all kinds of scenes are clarified. With the help of ArcGIS, Depthmap10.0 and other software, the spatial environment elements of the block are quantitatively analyzed, and the correlation analysis of the types of scenes and the influencing factors of the spatial environment is carried out by using SPSS software. Based on the analysis results, the index factors that have a significant impact on all kinds of scenes are screened out, and the positive and negative, strength and weakness and influencing mechanism of these factors on the scenes are deeply analyzed. The study found that the impact of the relevant factors in the block traffic, traditional street space and facilities on different types of scenes is different, while the relevant factors in the historical elements have a positive impact on all kinds of scenes.Therefore, in the scene update and transformation of the historical and cultural blocks, we should pay attention to improving the relevant factors of the historical elements, rationally layout the facilities, and moderately transform the traditional space of the street, so as to achieve the sustainable development and characteristic protection of the blocks.