Construction Of Digital Waterfront Landscape Sequence Of City And It’s Quantitative Human Feedback Evaluation

With the acceleration of urbanization,urban problems are becoming more and more prominent.Environmental problems such as urban pollution,low per capita green space occupancy,urban heat island effect and so on threaten the health of residents.A good landscape environment can promote the physical and mental health of urban residents in a certain level,especially in recent years,urban waterfront has become a hot spot of planning,design and urban construction in the world with its efficient environmental improvement function,unique physical and mental recovery function,highly dynamic social welfare value and huge economic benefits.As the improvement of urban waterfront landscape in China is still in the growing stage,it is very important to explore the road of development and construction theory and practice in line with the needs of the Chinese people.At present,the evaluation of urban waterfront landscape is mainly aimed at the environment itself,and mainly based on the actual environment,which has theoretical significance for the later improvement of the environment.However,if we can use human body feedback to evaluate the environment quantitatively in the planning and design stage,we can not only reduce the cost of resources caused by later improvement,but also more accurately reflect the impact of the environment on people.In view of this,this study formulates research questions and objectives,focusing on the core issues.Based on the literature review on waterfront landscape and related new technologies,this paper determines that the research object is urban waterfront landscape sequence,and the quantitative evaluation system of urban waterfront landscape sequence is studied by means of virtual reality technology and digital landscape construction technology.After determining the research content and scope,the technical route design is completed.Then,the relevant literature is combed again,and the relevant theories and research methods of urban waterfront landscape sequence and human body feedback technology are summarized,and the characteristics and operation methods of virtual reality technology and digital landscape construction technology are collected and sorted out.After determining the framework and dimensions of urban waterfront landscape evaluation indicators,field research was conducted in Chengdu and its surrounding main waterfront areas.Based on the research results,the components and spatial types of urban waterfront landscape were analyzed,and 9types of urban waterfront landscape spaces with the largest landscape heterogeneity were determined.According to the evaluation indexes and investigation results of urban waterfront landscape,the key parameters of 9 types of space are designed in a standardized way to eliminate random interference.Using rhinoceros 6,grasshopper,Sketch Up 2018,lumion10 pro and other software to carry out the digital scene architecture,and finally designed four types of urban waterfront landscape spatial sequences based on the green space elements,water space elements,water bank slope processing elements and internal traffic elements,which are Squ-G,Squ Ws,Squ-H and Squ-T in turn.At last,the core experiment is carried out.According to the technical characteristics of VR experience equipment and portable brain wave instrument,the human body feedback test of digital urban waterfront landscape sequence was designed,including single experience test and multiple experience tests,to study the influence and influence level of different landscape sequence on human,and the interference of legacy effect on influence level.Record and collect experimental data.SPSS was used to analyze the data through single factor analysis of variance,paired sample t-test and linear regression analysis,and a conclusion was drawn.Finally,the conclusions are as follows: 1)within the scope of investigation,there are significant correlations between the elements of green space and sight gallery space framework,and between the hydrophilicity and the gradient treatment of water bank.2)In terms of psychological impact,the sequence of urban waterfront landscape based on the spatial elements of water body has the best inhibition effect on negative emotions,followed by the slope treatment elements,internal traffic elements and green space elements;the effect of increasing positive emotions is not obvious;the legacy effect after this experience has a greater impact on the results.3)On the physiological level: the sequence of urban waterfront landscape based on the internal traffic factors has the strongest promoting effect on the degree of relaxation,followed by the spatial factors of water body and the gradient treatment factors of water bank;the impact on the degree of concentration shows a downward trend.4)The digital landscape space construction technology based on virtual reality technology can be used for quantitative human feedback evaluation of landscape space in the design stage.